No August Eaton. Heavy Duty Hydrostatic Pumps. Parts & Repair Information. Series 2 Hydrostatic Pumps
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1 Eaton Heavy Duty Hydrostatic Pumps No ugust 1997 Parts & Infmation Series 2 Hydrostatic Pumps
2 Table of Contents Introduction... 3 Required Tools f Disassembly/Reassembly... 3 Maj ssemblies Disassembly Order ID Tag Infmation... 4 Exploded View Drawing Charge Pump, End Cover...5 Exploded View Drawing Rotating Group... 6 Exploded View Drawing Main Housing... 7 Parts List Main Housing Servo Piston Sub-ssembly Swash Bearing Sub-ssembly Propel Valve Plate V-Groove Plate Bearing Plate Drive Shaft Sub-ssembly Rotating/Swash Plate ssembly Charge Pump Kit ssemblies End Covers Control Valves Manual Control Valve (Kit) Manual Control Valve Wide Band (Kit) Manual Control Valve with C Neutral Lockout & Potentiometer (Kit) Manual Control Valve with C Neutral Lockout (Kit) Manual Control Valve with Potentiometer (Kit) Solenoid Control Valve, Speed Sens & Mating Connect (Kits) (EP) Electronic Proptional Displacement Control (Kit) EP Control Solenoid ctuated Valve ssemblies, EP Control PWM Module (Kits) (MUX) Multiplex Displacement Control (Kit) Low Pressure Relief Valve (Kit) Shaft Seal (Kits) Shim Kit, End Cover Bearing Hold Down (Kits) Overhaul Gasket (Kits) Infmation Complete Disassembly Infmation Complete Reassembly Troubleshooting Gauge Requirements, Gauge Pt Size and Location Pressure Readings Fault-Logic Troubleshooting Hydraulic Fluid Requirements Special Tools Model Code Descriptions
3 Introduction This Manual provides service infmation f Eaton Heavy Series 2 Variable Displacement Pumps, Models 33, 39, 46, 54 and 64. Step by step instructions f complete disassembly, inspection and reassembly of the pump are given. The following recommendations should be followed to insure successful repairs. Most repairs require the removal of the pump from the vehicle. Cleanliness is extremely imptant. Clean the pt areas thoughly befe disconnect the hydraulic lines. Plug the pump pts and cover the open hydraulic lines immediately after they re disconnected. Drain the oil and clean the exteri of the pump befe making repairs. Wash all metal parts in clean solvent. Use compressed air to dry the parts. Dot not wipe them dry with paper towels cloth: lint in a hydraulic system will cause damage. The compressed air should be filtered and moisture free. lways use new seals when reassembling hydraulic pumps. Lubricate the new rubber seals with a petroleum jelly like Vaseline befe installation. Tque all bolts over gasketed joints, then repeat the tquing sequence to make-up f gasket compression. fter all repairs are complete it is essential to verify the accuracy of pump repairs on an authized test stand. Required Tools f Disassembly/Reassembly 1/4 in. Hex Key 5/16 in. Hex Key 9/16 in. Hex Key 5/8 in. Hex Key 12 mm Hex Key 5/16 in. Socket End Wrench 1/2 in. Socket End Wrench 9/16 in. Socket End Wrench 11/16 in. End Wrench 3/4 in. Socket End Wrench 1 in. Socket End Wrench 1 1/4 in. Socket End Wrench Breaker Bar Ratchet Wrench Tque Wrench (200 Max. Capacity) djustable Pliers Internal Retainer Pliers (Str. Tips) Dial Indicat with Magnetic Base Depth Micrometer with Extensions Parallel Bars (2) Slide Hammer Split Blade Bearing Puller Seal Bullet (Special) Low Clearance Bearing Puller (Special) Hammer (Steel and Plastic) Small Machinist Ruler Small Flashlight Light Petroleum Jelly Suitable Solvents and Cleaners Low Clearance Bearing Puller (Special) Special Tools are shown on pages Screwdrivers (Small & Large) Internal Retaining Pliers (str..047 Tips) 3
4 4 Maj ssemblies - Series 2 Variable Displacement Pump Order of Maj disassembly is: Caution: Befe attempting to disassemble pump refer to the detailed disassembly instructions starting on Page 28 2 uxiliary Mounting dapt 1. Control (as applicable) 2. uxiliary Mounting dapt (if applicable) 3. Charge Pump Cover 4. End Cover 5. Rotating Group & Shaft 6. Servo Piston 7. Main Housing 3 Charge Pump Cover 4 End Cover 1 Control 5 Rotating ssembly & Shaft 6 Servo Piston ID Tag Displacement cu. in./rev = = = = = 6.4 B Identifies Type of Product 22 = Variable Displacement Pump C Identifies Specific Unit Configuration D Month of Manufacture E Year of Manufacture F Specific Serial Number of Unit G Identifies Direction of Input Shaft Rotation Observed from Shaft End of Unit CW = Clockwise CCW = Counterclockwise D Eaton Model No. Serial No. Rotation B C G Eaton Cpation Hydraulics Division Spencer, Iowa F Detailed Model Code Listings refer to Pages E F 7 Main Housing NOTE: This is a typical Series 2 configuration your model may differ slightly from this view depending on features installed.
5 Exploded View Drawing Series 2 Variable Displacement Pump Detail of Charge Pump & dapt Pads are on Pages 15 & Model Number cm 3 / rev 54, 4 63, 7 75, 4 89, 2 105, 5 Displacement 3 in / rev NOTE: This is a typical Series 2 configuration your model may differ slightly from this view depending on features installed. Items
6 6 Exploded View Drawing Series 2 Variable Displacement Pump B Items Because critical calibrations have been made at the facty the Servo ssembly should not be disassembled NOTE: This is a typical Series 2 configuration your model may differ slightly from this view depending on features installed
7 Exploded View Drawing Series 2 Variable Displacement Pump 6 Control Valve (Refer to pages f Valve Options) 7 Control Valve Gasket Optional Plug Optional Magnetic Speed Sens ID Tag Refer to Page 4 f details 119 Optional C Items
8 Parts List Series 2 Variable Displacement Pump 8 Item Part No. Qty. Description 1 C 1 Main Housing (see parts list on page 11) 2 C 1 Drive Shaft Sub-ssembly (see parts list on page 12) 3 1 End Cover (see parts list on page 16) Hex Bolt HD 3/8-16 Gr8 (54,4-63,7-75,4 cm 3 /rev) Hex Bolt HD 7/16-16 Gr8 (89,2-105,5 cm 3 /rev) 5 1 End Cover Gasket (54,4-63,7-75,4 cm 3 /rev) 5 1 End Cover Gasket (89,2-105,5 cm 3 /rev) 6 C 1 Control Valve (see Control Valves on pages 17 through 24) 7 C 1 Control Valve Gasket (see Control Valves on pages 17 through 24) 12 B 1 Rotating Kit ssembly (see ssembly Parts List on page 13) 13 1 Propel Valve Plate (see ssembly Parts List on page 12) 14 B 1 Bearing Plate (see ssembly Parts List on page 12) 15 1 Eccentric Ring (see Charge Pump ssembly Parts List on page 14-15) 15 1 Gerot ssembly (see Charge Pump ssembly Parts List on page 14-15) 15 1 Valve Plate, High Tque Charge Pump (see Charge Pump List on page 14-15) 15 1 Charge Pump Cover (see Charge Pump Kit ssembly Parts List on page 14-15) 15 4 Sealing Washer (see Charge Pump Kit ssembly Parts List on page 14-15) 15 4 Cap Screw 5/16-18 Soc HD 1-1/2" (see Charge Pump Parts List on page 14-15) 4 Cap Screw 5/16-18 Soc HD 1-3/4"(see Charge Pump Parts List on page 14-15) 4 Cap Screw 5/16-18 Soc HD 2" (see Charge Pump Parts List on page 14-15) 15 1 Charge Pump Drive Shaft (see Charge Pump Kit ssembly Parts List on page 14-15) 15 1 Key (see Charge Pump Kit ssembly Parts List on page 14-15) 1 Key (see Charge Pump Kit ssembly Parts List on page 14-15) 15 1 Retaining Ring (see Charge Pump Kit ssembly Parts List on page 14-15) 1 Retaining Ring (see Charge Pump Kit ssembly Parts List on page 14-15) 15 1 O-Ring (see Charge Pump Kit ssembly Parts List on page 14-15) 1 O-Ring (see Charge Pump Kit ssembly Parts List on page 14-15) 15 1 Charge Shaft Bushing (pressed inside Charge Pump Cover) 1 Charge Shaft Bushing (pressed inside Charge Pump Cover) 15 1 Valve Plate, High Tque Charge Pump 28 C Ring Seal (54,4-63,7-75,4 cm 3 /rev) (see gasket kit page 27) 26 B 1 Servo Piston Sub-ssembly (see Sub-ssembly Parts List on page 11) 27 C 2 O-Ring (see kit page 27) 28 C Ring Seal (54,4-63,7-75,4 cm 3 /rev) (see gasket kit page 27) Ring Seal (89,2-105,5 cm 3 /rev) (see gasket kit page 27) 29 C Servo Piston Cover (54,4-63,7-75,4 cm 3 /rev) Servo Piston Cover (89,2-105,5 cm 3 /rev) 30 C Servo Piston Cover (54,4-63,7-75,4 cm 3 /rev) Servo Piston Cover (89,2-105,5 cm 3 /rev) 31 C Hex Bolt HD 5/16-18 Gr 5 (54,4-63,7-75,4 cm 3 /rev) Screw, Cap Soc HD 5/16-18 Gr 8 (89,2-105,5 cm 3 /rev) 32 C 2 O-Ring (54,4-63,7-75,3 cm 3 /rev) (see gasket kit page 27) 40 C Bearing Cup (54,4-63,7-75,4 cm 3 /rev) Bearing Cup (89,2-105,5 cm 3 /rev) Legend Refer to specific item assembly parts list. Parts included in Kit. (Refer to specific Parts Kit list.)
9 Parts List Series 2 Variable Displacement Pump Item Part No. Qty. Description 41 /R Bearing Shim (54,4-63,7-75,4 cm 3 /rev) (see Shim kit page 26) /R Bearing Shim (89,2-105,5 cm 3 /rev) (see Shim kit page 26) Bearing Cup/ Bearing Cone S/ (54,4-63,7-75,4 cm 3 /rev) Bearing Cup/ Bearing Cone S/ (89,2-105,5 cm 3 /rev) 44 B 2 Swash Bearing (54,4-63,7-75,4 cm 3 /rev) (see assembly parts list on page 11) 2 Swash Bearing (89,2-105,5 cm 3 /rev) (see assembly parts list on page 11) 45 B Race Pin 46 B Clocking Link (54,4-63,7-75,4 cm 3 /rev) Clocking Link (89,2-105,5 cm 3 /rev) 47 B Slide Block (54,4-63,7-75,4 cm 3 /rev) Slide Block (89,2-105,5 cm 3 /rev) 48 C 1 Low Pressure Relief Valve Plug (see LPRV Kit page 26) 49 C 1 O-Ring (see gasket kit page 27) 53 B Hold Down Spring 54 B Hold Down Washer Hollow Dowel (54,4-63,7-75,4 cm 3 /rev) Hollow Dowel (89,2-105,5 cm 3 /rev) 56 /B Dowel 57 4 Static Face Seal (see gasket kit page 27) 59 2 O-Ring (located between end cover and housing see page 27) 60 2 Back-up Ring (located between end cover and housing see page 27) 61 C O-Ring Plug 62 C O-Ring Plug Soc HD O-Ring Plug O-Ring Plug O-Ring Plug 66 /C O-Ring Plug (not all positions shown in views) 67 /C O-Ring Plug (used with IPOR if option is installed) Shipping Strap (54,4-63,7-75,4 cm 3 /rev) (not shown in view) Shipping Strap (89,2-105,5 cm 3 /rev) (not shown in view) xxx 2 Relief Valve, POR (Optional) xxx = last 3 digits indicate pressure setting i.e = 3000 psi xxx 1 Relief Valve and Check Valve (B Pt) xxx =last 3 digits indicate pressure setting i.e = 4500 psi xxx 1 Relief Valve and Check Valve ( Pt) xxx = last 3 digits indicate pressure setting i.e = 6500 psi 80 1 Control Valve Orfice 81 1 Control Valve Orfice 82 1 Control Valve Supply Orfic, Soc Pipe Plug NPTF (inside charge pump inlet pt) Soc Pipe Plug NPTF(inside charge pump inlet pt) 85 C 1 Magnetic Speed Sens (see Speed Sens Kit page 21) Plug (Optional) 86 C Retaining Ring (Optional) Legend Refer to specific item assembly parts list. /R s Required Parts included in Kit. (Refer to specific Parts Kit list.) 9
10 Parts List Series 2 Variable Displacement Pump Item Part No. Qty. Description 87 C 1 O-Ring (see gasket kit page 27) 95 1 Charge Pump dapt Kits see page 14-15) 116 C 1 Drive Shaft Seal (see Shaft Seal Kit page 26) 117 C 1 Ring, Retaining (see Shaft Seal Kit page 26) 118 C 1 Spacer (see Shaft Seal Kit page 26) 119 C Soc Pipe Plug NPTF (Optional) Used only with remote pressure side filtration. 10 Legend Refer to specific item assembly parts list. Parts included in Kit. (Refer to specific Parts Kit list.)
11 Parts List Series 2 Variable Displacement Pump Item 1 C Main Housing Item Part No. Qty. Description 1 C Main Housing 54,4-63,7-75,4 cm 3 /rev Main Housing 54,4-63,7-75,4 cm 3 /rev with IPOR Main Housing 54,4-63,7-75,4 cm 3 /rev with Speed Sens Main Housing 54,4-63,7-75,4 cm 3 /rev with IPOR and Speed Sens Main Housing 89,2-105,5 cm 3 /rev Main Housing 89,2-105,5 cm 3 /rev with IPOR Main Housing 89,2-105,5 cm 3 /rev with Speed Sens Main Housing 89,2-105,5 cm 3 /rev with IPOR and Speed Sens Main Housing 89,2-105,5 cm 3 /rev Item 26 B Servo Piston Sub-ssembly Hole indicates with Pressure Override Because critical calibrations have been made at the facty the Servo ssembly should not be disassembled. 1. Standard 2. With Pressure Override Note: There are two types of Servo Control ssemblies They are NOT interchangeable. Servo Piston Sub-ssembly Part Number Part Number Part Number Part Number Part Number Item Qty Description 54,4 cm 3 /rev 63,7 cm 3 /rev 75,4 cm 3 /rev 89,2 cm 3 /rev 105,5 cm 3 /rev 26 B 1 Servo Piston S/* Servo Piston S/ * - with POR (Pressure Override) Item 44 B Swash Bearing Sub-ssembly Servo Piston Sub-ssembly Part Number Part Number Part Number Part Number Part Number Item Qty Description 54,4 cm 3 /rev 63,7 cm 3 /rev 75,4 cm 3 /rev 89,2 cm 3 /rev 105,5 cm 3 /rev 44 B 1 Swash Bearing S/* * Two Swash Bearings are needed when replacing we recommend that both Bearing ssemblies be replaced. 11
12 Parts List Series 2 Variable Displacement Pump Item 13 Propel Valve Plate V-Groove Plate CW Propel Valve Plate CW V-Groove Plate Plate, Propel Valve Plate, V-Groove Part Number Part Number Part Number Part Number Model 33, 39 Model 46 Model 54 Model 64 Item Qty Description 54,4-63,7 cm 3 /rev 75,4 cm 3 /rev 89,2 cm 3 /rev 105,5 cm 3 /rev 13 1 Propel Valve Plate - CCW Propel Valve Plate - CW V-Groove Plate - CCW V-Groove Plate - CW CCW Counter Clockwise CW Clockwise Item 14 B Bearing Plate Bearing Plate Part Number Part Number Part Number Part Number Model 33, 39 Model 46 Model 54 Model 64 Item Qty Description 54,4-63,7 cm 3 /rev 75,4 cm 3 /rev 89,2 cm 3 /rev 105,5 cm 3 /rev 14 B 1 Bearing Plate Item 2 C Drive Shaft Sub-ssembly ll Drive Shafts listed are used with High Tque Charge Pumps Item Part No. Qty. Description 2 C * 1 Drive Shaft S/ 23 Tooth 16/32 Input Pitch Spline 27 Tooth 24/48 Pitch Spline Output includes Pressed Bearing Cone and Retaining Ring * 1 Drive Shaft S/ 23 Tooth 16/32 Input Pitch Spline 27 Tooth 24/48 Pitch Spline Output includes Pressed Bearing Cone and Retaining Ring - 3/8-24 UNF -2B.75 deep threaded hole in shaft end * 1 Drive Shaft S/ 14 Tooth 12/24 Input Pitch Spline 27 Tooth 24/48 Pitch Spline Output includes Pressed Bearing Cone and Retaining Ring * 1 Drive Shaft S/ 21 Tooth 16/32 Input Pitch Spline 27 Tooth 24/48 Pitch Spline Output includes Pressed Bearing Cone and Retaining Ring ** 1 Drive Shaft S/ 23 Tooth 16/32 Input Pitch Spline 27 Tooth 24/48 Pitch Spline Output includes Pressed Bearing Cone and Retaining Ring. Models 54, ** 1 Drive Shaft S/ 14 Tooth 8/16 Input Pitch Spline 27 Tooth 24/48 Pitch Spline Output includes Pressed Bearing Cone and Retaining Ring. Models 54, ** 1 Drive Shaft S/ 13 Tooth 8/16 Input Pitch Spline 27 Tooth 24/48 Pitch Spline Output includes Pressed Bearing Cone and Retaining Ring. Models 54,64. * Models 33, 39 and 46 (54,4-63,7-75,4 cm 3 /rev) ** Models 54 and 64 (89,2-105,5 cm 3 /rev)
13 Parts List Series 2 Variable Displacement Pump Item 12 B (from page 6) Rotating/Swash Plate ssembly Standard Slipper Wide Land Slipper 12-B Note: The Bearing Plate is item 14 on page 6 and is listed on Pages 8 and 12. The Hold Down Springs and Hold Down Washers are listed on Pages 6 and Rotating/Swash Plate ssembly Model 33, 39 Model 46 Model 54 Model 64 54,4-63,7 cm 3 /rev 75,4 cm 3 /rev 89,2 cm 3 /rev 105,5 cm 3 /rev Item Qty Description Part Number Part Number Part Number Part Number 12 1 Rotating/Swash Plate ssy * * * * Wide Land * * * * 12-1 Rotating Group Kit** Wide Land B 1 Barrel Kit Retaining Ring Spacer Cyl Barrel Spring Cylinder Barrel Spring Spacer Shaft Spring Barrel and Sleeve Cap Screw (Kit) NSS Washer (Kit) NSS Hold Down Strap (Kit) NSS Fixed Clr. Spacer (Kit) NSS Slipper Retainer Plate Slipper Piston S/ Slipper Piston S/ Fixed Clr Thrust Plate Swash Plate S/ NSS - Not Sold Separately S/ - Sub ssembly Parts included in Rotating/Swash Plate ssy. Wide Land Slipper * These are Complete Rotating/Swash Plate Group ssemblies and include Items 12-2 through ** Rotating Group Kit includes item 12-B (Barrel Kit), item (Slipper Retaining Plate) and item (Slipper piston S/). 13
14 14 Parts List Series 2 Variable Displacement Pump Item 15 Charge Pump Kit ssemblies Pad B B, BB-Pad 15-C -pad, High Tque Charge Pump, Dual 2 Bolt Mount, No Shaft Seal, 9 Tooth 16/32 Pitch Spline 15-D (vailable F ll Models) B-pad, High Tque Charge Pump, Dual 2 Bolt Mount, No Shaft Seal, 13 Tooth 16/32 Pitch Spline (vailable F ll Models) BB-pad, High Tque Charge Pump, Dual 2 Bolt Mount, No Shaft Seal, 15 Tooth 16/32 Pitch Spline (vailable F ll Models) C-pad, High Tque Charge Pump, 4 Bolt Mount, No Shaft Seal, 14 Tooth 12/24 Pitch Spline (vailable F ll Models) C-Pad
15 Item 15 Charge Pump Kit ssemblies Kit Number Charge Pump Description Kit Displacement dapt Bolts (4 ea) 15- Flange O-Ring Cust. 15-B Pad dapt 15-C dapt O-Ring 15-D Charge Cover Bolts (4 ea) 15-1 Sealing Washers (4 ea) 15-2 Charge Cover S/ 15-3 Charge Cover O-Ring 15-4 Shaft 15-5 Key 15-6 Retaining Ring 15-7 Eccentric Ring 15-8 Gerot S/ 15-9 Valve Plate No Pad - High Tque 14cc/.85CID No Pad - High Tque 14cc/.85CID Pad - High Tque 14cc/.85CID Pad - High Tque 14cc/.85CID B Pad - High Tque 14cc/.85CID B Pad - High Tque 14cc/.85CID BB Pad - High Tque 14cc/.85CID BB Pad - High Tque 14cc/.85CID No Pad High Tque 21cc/1.28CID No Pad High Tque 21cc/1.28CID Pad High Tque 21cc/1.28CID Pad High Tque B Pad High Tque 21cc/1.28CID cc/1.28CID B Pad High Tque 21cc/1.28CID BB Pad High Tque 21cc/1.28CID BB Pad High Tque 21cc/1.28CID No Pad High Tque 28cc/1.70CID No Pad High Tque 28cc/1.70CID Pad High Tque 28cc/1.70CID Pad High Tque B Pad High Tque 28cc/1.70CID cc/1.70CID B Pad High Tque 28cc/1.70CID BB Pad High Tque 28cc/1.70CID BB Pad High Tque 28cc/1.70CID No Pad High Tque 28cc/1.70CID C Pad - High Tque 14cc/.85CID (6 ea. ) C Pad - High Tque 21cc/1.28CID 28cc/1.70CID (6 ea.) = When replacing use the existing Bolts, Eccentric Ring, Gerot S/ and Valve Plate. NOTE: ll Parts can be purchased separately.
16 Parts List Series 2 Variable Displacement Pump Item 3 End Covers* Item Part No. Qty. Displacement Main Pts POR Options ,4 & 63,7 cm 3 /rev 62 N Remote Filter Pts ,4 & 63,7 cm 3 /rev 61 N ,4 & 63,7 cm 3 /rev 61 Y ,4 & 63,7 cm 3 /rev 62, M12X1.75 N ,4 & 63,7 cm 3 /rev 62, M12X1.75 Y ,4 & 63,7 cm 3 /rev 62 Y ,4 & 63,7 cm 3 /rev 62 N ,4 & 63,7 cm 3 /rev 62 Y Remote Filter Pts ,4 cm 3 /rev 62 Y Remote Filter Pts ,4 cm 3 /rev 62 N Remote Filter Pts ,4 cm 3 /rev 61 Y ,4 cm 3 /rev 62, M12X1.75 N ,4 cm 3 /rev 62, M12X1.75 Y ,4 cm 3 /rev 62 N ,4 cm 3 /rev 62 Y ,2 cm 3 /rev 61 Y Remote Filter Pts ,2 cm 3 /rev 61 Y ,2 cm 3 /rev 62 N Remote Filter Pts ,2 cm 3 /rev 61 N ,2 cm 3 /rev 62 Y ,2 cm 3 /rev 62 Y Remote Filter Pts ,2 cm 3 /rev 62 N ,2 cm 3 /rev 62 N Pressure Transducer ,5 cm 3 /rev 62 Y ,5 cm 3 /rev 62 N ,5 cm 3 /rev 62 N Pressure Transducer ,5 cm 3 /rev 62 Y Remote Filter Pts ,5 cm 3 /rev 62, M12X1.75 Y Pressure Side Filter ,5 cm 3 /rev 62 N Remote Filter Pts ,5 cm 3 /rev 61 Y Remote Filter Pts * ll listed End Covers are f High-Tque Charge Pumps POR = Pressure Override 16
17 Parts List Series 2 Control Valve ssemblies Item 6 C Control Valves Manual Control Valve (Kit) Item Part No. Qty. Description 6 C Manual Control Valve (Kit) includes below; Manual Control Valve S/ Control Gasket Cap Screw SOC HD 5/16-18 GR Cap Screw SOC HD 5/16-18 GR Control Link S/ Nut 5/ Washer Control Lever Control Lever Manual Control Valve Wide Band (Kit) Item Part No. Qty. Description 6 C Manual Control Valve Wide Band (Kit) includes below; Manual Control Valve Wide Band S/ Control Gasket Cap SOC HD 5/16-18 GR Cap Screw SOC HD 5/16-18 GR Control Link S/ Nut 5/ Washer Control Lever Control Lever 17
18 Parts List Series 2 Control Valve ssemblies Manual Control Valve with C Neutral Lockout & Potentiometer (Kit) Neutral Lockout Switch Mating Connect Kit* Connect (1) Cross Reference Delphi/Packard P/N Terminal (2) Cross Reference Delphi/Packard P/N Cable Seal (2) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics Item Part No. Qty. Description 6 C Manual Control Valve with C Neutral Lockout & Potentiometer (Kit) includes below; Manual Control Valve with C Neutral Lockout & Potentiometer 7 C Control Gasket Cap Screw SOC HD 5/16-18 GR Cap Screw SOC HD 5/16-18 GR Control Link S/ Nut 5/ Washer Control Lever Control Lever Potentiometer Screw 8-32 UN Washer Potentiometer Gasket Feedback Shaft S/ O-Ring Hollow Dowel C = Nmally Closed = Parts included in Kit P/N see Below Potentiometer Kit Part No. Qty. Description Potentiometer Screw SF Head Mach 8-32 UN Washer Potentiometer Gasket Potentiometer Mating Connect Kit* Connect (1) Cross Reference Delphi/Packard P/N Terminal (3) Cross Reference Delphi/Packard P/N Cable Seal (3) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics
19 Parts List Series 2 Control Valve ssemblies Manual Control Valve with C Neutral Lockout (Kit) Item Part No. Qty. Description 6 C Manual Control Valve with C Neutral Lockout (Kit) includes below; Manual Control Valve with C Neutral Lockout 7 C Control Gasket Cap Screw SOC HD 5/16-18 GR Cap Screw SOC HD 5/16-18 GR Control Link S/ Nut 5/ Washer Control Lever Control Lever C = Nmally Closed Neutral Lockout Switch Mating Connect Kit* Connect (1) Cross Reference Delphi/Packard P/N Terminal (2) Cross Reference Delphi/Packard P/N Cable Seal (2) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics
20 Parts List Series 2 Control Valve ssemblies Manual Control Valve with Potentiometer (Kit) Potentiometer Mating Connect Kit* Connect (1) Cross Reference Delphi/Packard P/N Terminal (3) Cross Reference Delphi/Packard P/N Cable Seal (3) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics Item Part No. Qty. Description 6 C Manual Control Valve with Potentiometer (Kit) includes below; Manual Control Valve with Potentiometer 7 C Control Gasket Cap Screw SOC HD 5/16-18 GR Cap Screw SOC HD 5/16-18 GR Control Link S/ Nut 5/ Washer Control Lever Control Lever Potentiometer Screw 8-32 UN Washer Potentimeter Gasket Feedback Shaft S/ O-Ring Hollow Dowel = Parts included in Kit P/N see Page 18 20
21 Parts List Series 2 Control Valve ssemblies Solenoid Control Valve ssemblies & Mating Connect (Kits) 6 6 6B I tem P art No. Qty. Description S Control Valve with Potentiometer24Vdc (Kit) S Control Valve with Potentiometer 24Vdc S/ includes below: Coil, 24Vdc S/ 6B Proptional Solenoid Cartridge S Control Valve with Potentiometer 12Vdc (Kit) S Control Valve with Potentiometer 12Vdc includes below; Coil, 12Vdc S/ 6B Proptional Solenoid Cartridge Solenoid Control Mating Connect Kit* Solenoid Mating Connect Kit Connect (1) Cross Reference Delphi/Packard P/N Terminal (4) Cross Reference Delphi/Packard P/N Cable Seal (4) Cross Reference Delphi/Packard P/N Secondary Lock (1) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm Potentiometer Mating Connect Kit Connect (1) Cross Reference Delphi/Packard P/N Terminal (3) Cross Reference Delphi/Packard P/N Cable Seal (3) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics Both Kits include below; 7C Control Gasket Cap Screw Soc HD 5/16-18 GR Cap Screw Soc HD 5/16-18 GR Potentiometer S/F Head Mach Screw 8-32 UN Washer Potentiometer Gasket Feedback Shaft S/ O Ring Hollow Dowel = Parts included in Kit P/N see Page 18 21
22 Parts List Series 2 Control Valve ssemblies (EP) Electronic Proptional Dispalacement Control (Kits) Neutral djustment EP Control Mating Connect Kit* Command Input Signal Mating Connect Connect (1) Cross Reference Delphi/Packard P/N Terminal (3) Cross Reference Delphi/Packard P/N Cable Seal (3) Cross Reference Delphi/Packard P/N Secondary Lock (1) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm Power Supply Mating Connect Connect (1) Cross Reference Delphi/Packard P/N Terminal (2) Cross Reference Delphi/Packard P/N Cable Seal (2) Cross Reference Delphi/Packard P/N Secondary Lock (1) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics Kit Number Valve Kit Description Control Valve S/ Qty 1 Gasket Control Qty 1 Screw, Cap Soc HD 5/16-18 GR8 Qty 5 Control Link S/ Qty 1 EP Control Electronics S/ Qty 1 Screw, Button Head Cap Qty 4 Lockwasher Qty EP Control 24 Vdc ± 100m EP Control 12Vdc ± 100m EP Control 24Vdc ± 5 Vdc EP Control 12Vdc ± 5 Vdc EP Control 24Vdc 4-20m EP Control 12Vdc 4-20m EP Control 24Vdc 1-5 Vdc EP Control 12Vdc 1-5 Vdc
23 Parts List Series 2 Control Valve ssemblies EP Control Solenoid ctuated Valve ssemblies (Kits) Coil 24Vdc P/N (1) Coil 12Vdc P/N (1) EP Solenoid Mating Connect Kit* EP Solenoid Mating Connect Kit Connect (1) Cross Reference Delphi/Packard P/N Terminal (4) Cross Reference Delphi/Packard P/N Cable Seal (4) Cross Reference Delphi/Packard P/N Secondary Lock (1) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics Solenoid Tube S/ P/N (2) Kit Number Kit Description Control Valve S/* Qty 1 Gasket Control Qty 1 Screw, Cap Soc HD 5/16-18 GR8 Qty 5 Control Link S/ Qty 1 Solenoid Tube S/ Qty 2 Coil 12 Vdc Qty 1 Coil 24 Vdc Qty EP Control Solenoid ctuated 24 Vdc EP Control Solenoid ctuated 12 Vdc * Includes Solenoid Tube S/ and Coil bove parts are included in the Kit but may be purchased separately. 23
24 Parts List Series 2 Control Valve ssemblies (MUX) Multiplex Displacement Control MUX Mating Connect Kit* MUX Mating Connect MUX Displacement Control (Kit) Item Part No. Qty. Description 6 C MUX Displacement Control (Kit) includes below; Programmed MUX Controller S/ Screw, SOC Button Head Cap, Screw, SOC Button Head Cap, Stand Off Connect** (1) Cross Reference Delphi/Packard P/N Terminal.(8) Cross Reference Delphi/Packard P/N Cable Seal Plug (6) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics ** Includes Cable Seal Note: 3 Way Connect and 4 Way connect interface with S Control Valve with Potentiometer refererence on Page 21. Item Speed Sens Kit Part No. Qty. Description Magnetic Speed Sens Retaining Ring O-Ring Plug Speed Sens Mating Connect Kit* Connect*** (1) Cross Reference Delphi/Packard P/N Terminal (2) Cross Reference Delphi/Packard P/N Recomended wire size: WG Recomended cable diameter: mm * lternate reference source: Pioneer Standard Electronics *** Includes Cable Seal Solenoid Control and Speed Sens Mating Connect Kit* Kit includes: Solenoid Control Mating Connect Kit Speed Sens Mating connect Kit 24
25 Parts List Series 2 Kits Low Pressure Relief Valve Kit Item Part No. Qty. Description pproximate 48 C LPRV Plug S/ Includes Below: PSI.020 Shim LPRV Plug = 5 Shims O-Ring = 6 Shims LPRV Spring LPRV Poppet = 7 Shims * 10 Shim (.020) 435 = 12 Shims LPRV = Low Pressure Relief Valve * See table f the Required Shims to cheive PSI setting Shaft Seal Kit Models 33, 39, 46 54,4 63,7 75,4 cm 3 /rev Item Part No. Qty. Description 116 C Drive Shaft Seal 117 C Retaining Ring 118 C Spacer Shim Kit, End Cover Bearing Models 33, 39, 46 / 54,4 63,7 75,4 cm 3 /rev Item Part No. Qty. Description Bearing Shim Bearing Shim Bearing Shim Bearing Shim Bearing Shim Bearing Shim Hold Down Kit Models 33, 39, 46 54,4 63,7 75,4 cm 3 /rev Shaft Seal Kit Models 54, 64 89,2 105,4 cm 3 /rev Item Part No. Qty. Description 116 C Drive Shaft Seal 117 C Retaining Ring 118 C Spacer Shim Kit, End Cover Bearing Models 54, 64 / 89,2 105,4 cm 3 /rev Item Part No. Qty. Description Bearing Shim Bearing Shim Bearing Shim Bearing Shim Bearing Shim Bearing Shim Hold Down Kit Models 54, 64 89,2 105,4 cm 3 /rev Item Part No. Qty. Description Cap Screw 5/ Washer Hold Down Strap Spacer Item Part No. Qty. Description Cap Screw 5/ Washer Hold Down Strap Spacer 26
26 Parts List Series 2 Kits Gasket Kit Item Part No. Qty. Description End Cover Gasket (54,4-63,7-75,3) End Cover Gasket (89,2-105,5) Sealing Washer O-Ring (charge Cover) O-Ring (charge Cover) 27 C O-Ring (54,4-63,7-75,3) 27 C O-Ring (89,2-105,5) 28 C Ring Seal (54,4-63,7-75,3) 28 C Ring Seal (89,2-105,5) 32 C O-Ring (54,4-63,7-75,3) 32 C O-Ring (89,2-105,5) 26 B Thread Seal 49 C O-Ring Static Face Seal O-Ring Back-up Ring 87 C O-Ring (speed sens) Gasket, (potentiometer) O-Ring (potentiometer) 15-B O-Ring -Pad (cust) 15-B O-Ring B-Pad (cust) 15-B O-Ring C-Pad (cust) 15-C O-Ring Pad (charge cover) 15-C O-Ring Pad (charge cover) 7 C EP Control Gasket 7 C MN Control Gasket 7 C SOL Control Gasket O-Ring Dust Seal O-Ring O-Ring O-Ring O-Ring O-Ring 27
27 Infmation Series 2 Variable Displacement Pump The following repair infmation may be used in the inspection, conversion and repair of the Eaton Series 2 Variable Displacement Pump. The Pump Shown in this section incpates the manual displacement control, high pressure relief valves, internal pressure override valves and the high trque auxiliary pump option. Complete Disassembly The following procedures describe complete disassembly of the Series 2 variable displacement pump. s the variable displacement pump is available in two frame sizes with many displacements and options, these procedures cover the basic units only. The procedures f the units with options that are not shown are basically the same. The level of cleanliness maintained when repairing the pump could affect pump perfmance. Figure 1 Wk in a clean area. fter washing the parts with clean solvent, blow the parts dry with air. Inspect all mating surfaces. all damaged parts. Do not use grit paper, files grinders on finished parts. NOTE: Whenever a pump is disassembled, it is a good policy to replace all seals. Lubricate new seals with petroleum jelly befe installation. Use only clean, recommended hydraulic fluid on finished surfaces befe reassembly. It is recommended that the exteri of the pump be thoughly cleaned befe disassembly. Make sure all open pts are sealed. Figure 5 Figure 4 Next remove the control valve assembly gasket and discard. (see Figure 4) Remove the control valve feedback assembly by simply lifting it straight up. (see Figure 5) Depending upon the type of control used, and application used on, determines ifice size and location. The ifices are staked in three places to retain them in their pockets. The ifices sizes are stamped on the Figure 6 face of each ifice. These ifices need not be removed unless ifice size need to be changed. (see Figure 6) To remove the input shaft seals retaining ring, use a pair of internal retaining ring pliers with.090 straight tips and carefully remove the retaining ring and spacer ring(s) from Figure 2 the pump housing. It will be easier to remove the actual shaft seal later on during the disassembly of the pump. (see Figure 2). To remove the control valve assembly, use 1/4 in. bit socket hex key and remove the control valve assembly s five retaining cap screws. With the retaining cap screws removed, remove the control valve assembly by simply lifting it straight Figure 3 up. (see Figure 3) Figure 7 Figure 8 The ifice on earlier manufactured pump (P) were either staked in the control housing shown here a loose fit in the control housing. (see Figure 7) Using a 9/16 hex key allen wrench, remove the socket head plug. This plug is used to retain the clocking link which we will remove later. (see Figure 8) 28
28 Infmation Series 2 Variable Displacement Pump Next using a 9/16 hex key allen wrench remove the two high pressure relief valves check valve assemblies. (see Figure 9) Shown here are all the parts used in the internal pressure override. Valve plug, shims spring end and valve poppet. (See Figure 14) Figure 9 Depending upon the pumps model, the pump will incpate either two high pressure relief valves check valve assemblies. When high pressure relief valves are used, the high pressure relief valve located on the low side of the closed circuit will act as a check Figure 10 Figure 10 valve. (see Figure 10) Figure 12 Figure 13 Figure 11 The high pressure relief valve settings are marked on the end of each relief valve assembly as shown here. (see Figure 11) Using a 12 mm hex key allen wrench remove the two optional internal pressure override valve plugs, springs and spring end. NOTE: Not all models incpate these optional internal pressure override valves. (see Figure 12) Using a pair of needle nose pliers remove the valve poppet. (see Figure 13) Figure 14 NOTE: The internal pressure override valve setting can be changed simply by adding deleting shims. Figure 16 Figure 15 Figure 17 Next, using a 1-1/4 in. socket end wrench, remove the charge pressure relief valve plug and valve spring and valve poppet from the pump housing. (see Figure 15) Shown here are all the parts used in the charge pressure relief valve. Plug, shims, valve spring and valve poppet. The charge pressure relief valve setting can be changed simply by adding deleting shims. (see Figure 16) Note: Some models use a single charge pressure relief valve cartridge. Next, using a 5/16 in. hex key allen wrench remove the auxiliary pump mounting flange retaining cap screws. With the retaining cap screws removed, remove the mounting flange from the pump end cover (see Figure 17) Turn the auxiliary pump adapter over and using an O-Ring pick similar tool, remove the sealing ring. (see Figure 18) Figure 18 29
29 Infmation Series 2 Variable Displacement Pump Figure 21 Figure 19 Figure 20 Using a 1/4 bit socket hex key, remove the charge pump cover retaining cap screws. (see Figure 19) With the cap screws removed, remove the charge pump cover by using a large pair of adjustable pliers. Remove by gently rocking the cover backand-fth as you pull upward. (see Figure 20) Next, remove the charge pump covers sealing O- ring from the pump end cover. (see Figure 21) Remove the charge pump coupling and gerot star. (see Figure 22) Figure 25 Figure 26 With the gerot outer ring removed from the eccentric ring, remove the eccentric ring. The position of this eccentric ring in the end cover is one of the items used to determine charge pump input rotation. Befe removing you may want to note its position f reassembly. (see Figure 25) Next, remove the charge pump valve plate. The position of this valve plate is also used to determine charge pump input rotation. Befe removing you may also want to note its position. (see Figure 26) Using the proper size socket end wrench, remove the end cover retaining cap screws. Caution should be used when removing the retaining cap screws as the end cover has an internal preload. If the end Figure 27 cover does not rise when the cap screws are loosened, you may have to tap the end cover to break the gasket seal. Figure 22 The gerot star is a slip fit on the coupling and is driven by a small key, caution must be used not to lose this key. To remove the star, simply slide it from the coupling. It is not Figure 23 necessary to remove the retaining ring from the coupling as it is used f location purposes only. (see Figure 23) Figure 24 Next, remove the gerot outer ring from the eccentric ring located in the pump end cover. (see Figure 24) With the retaining cap screws removed, carefully remove the pump end cover. When removing, Caution must be used not to drop any internal parts such as the valve plate, bearing cup, etc. which may may not stick to the end cover. Caution must be used when handling all close tolerance parts. (see Figure 27) Figure 29 Figure 28 Carefully turn the end cover over and remove the valve plate and dowel pin. (see Figure 28) With the valve plate removed, remove the rear bearing cup from the end cover. This bearing cup is a slip fit into the end cover. (see Figure 29) 30
30 Infmation Series 2 Variable Displacement Pump Figure 30 Next, remove the rear bearing shims from the end cover. Make sure not to misplace these shims, as they are used to adjust the main pump shaft bearing end play preload. (see Figure 30) Do not remove the two Internal Pressure Override passage plugs located in the end cover as shown here. However, if the unit you are wking on has the Internal Pressure Override Figure 31 option and you are going to change the pump input rotation, these two plugs must be removed and installed into the other two passage pts. (see Figure 31) Remove the two hollow dowels from the pump housing. (see Figure 32) Figure 34 Figure 34 Next, remove the bearing plate and two dowel pins from the cylinder barrel. NOTE: If a small screwdriver similar tool is used to pry the bearing plate from the cylinder barrel, extreme caution must be used not to scratch damage the cylinder barrel s bearing plates lapped surfaces. (see Figure 34) Shown here are both the valve and bi-metal bearing plates. The bearing plates are interchangeable with the same series plates used on the series one transmissions. The valve plates are also interchangeable Figure 35 with the same series plates used on the series one tandem pumps. The bearing plates are bidirectional and the valve plates are unidirectional. (see Figure 35) Figure 36 Next, remove the hold-down springs. (see Figure 36) NOTE: Earlier units did not use washers. Figure 32 Figure 33 here. (see Figure 33) Using an O-ring pick similar tool, remove the sealing O-rings and backup rings from the pump housing. Only units with the optional Internal Pressure Override option incpated the additional O-rings and backup rings as shown NOTE: Like in the pump end cover, when ever the pump input rotating is changed, the two passage plugs located in the pump housing must also be removed and installed into the other two pts. Figure 37 Install a low clearance split type bearing puller under the rear bearing. You can use the same size and type of puller that was used on the ETON Series 0 ball guide transmissions. (see Figure 37) NOTE: IF you do not have a low clearance puller, please see the special tool section located on page 57 in the back of this manual f the dimensions required to make a low clearance puller. Figure 38 Install the puller on the split type bearing puller. Do not remove the rear bearing at this time. Use the puller handle to remove the pump shaft, swashplate and rotating group from the pump housing. (see Figure 38) 31
31 Infmation Series 2 Variable Displacement Pump Figure 39 Figure 40 Figure 41 Shown here is a simple wooden box that may be used to suppt the rotating group during disassembly and reassembly. Cut two radius that match the radius machined on the back side of the swashplate into the top of the box. (see Figure 39) With the swashplate and rotating group suppted, remove the slide block from the swashplate. (see Figure 40) Next, remove the rear bearing by using the bearing puller that was previously installed. (see Figure 41) Figure 44 Figure 45 Reposition the swashplate and rotating group back on the suppt base. Next, using a 1/4 in. allen wrench bit socket, remove the screws, spacers and strap from only one side of the swashplate. t this time also loosen the other side. This will make it easier to retain the assembly during handling. (see Figure 44) Reposition the swashplate and rotating group on a clean flat surface. Carefully remove the swashplate from the rotating group. gain using a 1/4 in. allen wrench bit socket remove the screws, spacers and strap from the other side of the swashplate. (see Figure 45) Shown here are all the parts used f the fixed hold down, retaining cap screws, washers, straps, spacers and thrustplate. (see Figure 46) Figure 46 Figure 42 With the rear bearing removed, carefully slide the swashplate and rotating group up and over the pump shaft assembly. (see Figure 42) Figure 47 fter separating the cylinder barrel assembly from the swashplate, remove the piston assemblies and piston retainer and place them on a clean protective surface f inspection and cleaning. (see Figure 47) Remove the pump shaft assembly from the suppt box. When it is necessary to replace the front bearing, a hydraulic press will be needed to remove the bearing from the shaft. Figure 43 ment bearings are pressed to a specific dimension. These dimensions, per each pump model, are listed on page 57 in the back of this manual. (see Figure 43) Figure 48 Using a 5/8 allen wrench bit socket remove the clocking link retaining plug. (see Figure 48) 32
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