Section 35 Chapter 3 PTO AND DIFFERENTIAL LOCK VALVE NH

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1 Section 5 Chapter PTO AND DIFFERENTIAL LOCK VALVE NH

2 TABLE OF CONTENTS SPECIAL TORQUES SPECIFICATIONS PTO AND DIFFERENTIAL LOCK VALVE Troubleshooting Removal Disassembly Inspection Assembly Installation PTO And Diff Lock Valve Cross Section SPECIAL TORQUES Solenoid Valve Nut... 5 to 8 Nm (4 to 6 lb ft) Plug... 4 to 54 Nm (25 to 40 lb ft) Solenoid Cartridge to 18 Nm (9 to 1 lb ft) Valve Mounting Bolts to 46 Nm (0 to 4lb ft) SPECIFICATIONS Modulation Spring (smaller) Free Length mm (1.542 inch) Compress to 2.70 mm (1.06 inch) to N (27.6 to.8 lb) Preload Spring (larger) Free Length mm (1.542 inch) Compress to mm (1.871 inch) to N (21.6 to 26.4 lb) 5-2

3 Troubleshooting SECTION 5 - PTO AND DIFFERENTIAL LOCK VALVE - CHAPTER PTO AND DIFFERENTIAL LOCK VALVE STEP 1 STEP 2 If other regulated pressure functions such as braking or transmission control are not operating properly, Check the regulated pressure. See Hydraulic Systems How It Works With Troubleshooting. RH98F160 The PTO and diff lock valve can be serviced after the cab is either raised or removed. See Cab Raise/ Removal and Installation information for procedure. Before removing the valve, check the PTO controller for fault codes. See PTO Controller Configuration and Fault Code information for procedure and corrective action if a fault exists. Depending on which system is not functioning correctly, see Power Take Off Control System How It Works, or Differential Lock Control System How It Works. 5-

4 Removal STEP INLET 4. DIFF LOCK SOLENOID 2. LUB INLET 5. MOUNTING BOLT. PTO PWM SOLENOID RI02D105 NOTE: Clean the surface of the PTO valve and all tube connections before doing any service work. Tag tube and electrical connections. Cap or plug all open hydraulic connections. NOTE: Depending on how your tractor is equipped, it may be necessary to remove hydraulic tubes that run across the top of the valve in order to remove the valve. 1. Disconnect the tube from the valve inlet (1). 2. Disconnect the tubes from the lube inlet (2).. Disconnect the wire harness from the PTO PWM solenoid (). 4. Disconnect the wire harness from the diff lock solenoid (4). 5. Remove the two mounting bolts (5) and remove the valve from the mounting plate. 5-4

Disassembly STEP 4 STEP 6 5 1 Place the PTO valve on a clean workbench.

Compress the modulation spring (2) by pushing on the retaining sleeve () and separate the modulator

Be careful not to loose the two steel balls (6) when the assembly come apart.

5 Disassembly STEP 4 STEP Place the PTO valve on a clean workbench. STEP 5 RD02E RD02E112 Remove the preload spring (1) from the spool assembly. Compress the modulation spring (2) by pushing on the retaining sleeve () and separate the modulator spool(4) from the modulator piston (5). Be careful not to loose the two steel balls (6) when the assembly come apart. STEP 7 4 Remove the plug and PTO modulation spool. RD02E111 RD02E114 Remove the PTO solenoid coil and two O-rings and the diff lock solenoid from the valve. STEP 8 RD02E115 Remove the solenoid cartridges from the valve and discard the O-rings. 5-5

6 Inspection STEP 9 2. Inspect the valve spool and piston for heavy wear or damage. If present, the complete assembly must be replaced.. Replace all O-rings. 4. Clean the valve body with suitable cleaning fluid. 66L7 1. Check the two PTO modulation spool springs with a compression tester. Check each spring for free length and for compressed load force per specifications in this section. 5-6

7 Assembly NOTE: Lubricate spools and cartridges with clean hydraulic fluid during assembly DIFF LOCK SOLENOID 5. MODULATOR SPOOL 9. MODULATION SPRING 2. CARTRIDGE 6. STEEL BALL 10. PRELOAD SPRING. O-RING 7. MODULATOR PISTON PIN 11. MODULATION PISTON 4. PTO SOLENOID 8. RETAINER SLEEVE 12. BODY RI98G

STEP 10 STEP 12 1 2 4 5 RD02E115 Install new O-rings on the solenoid cartridges.

on the cartridge. Install the diff lock solenoid on to the cartridge. Install the retaining nuts and tighten to a torque of 5 to 8 Nm (4 to 6 lb ft).

Apply petroleum jelly to the steel balls (4) and insert them into the bore at the end of the modulator spool (5).

8 STEP 10 STEP RD02E115 Install new O-rings on the solenoid cartridges. Install the cartridges and tighten to a torque of 12 to 18 Nm (9 to 1 lb ft) RI02E060 STEP 11 RD02E11 RD02E114 Install two new O-rings on the PTO solenoid coil and install on the cartridge. Install the diff lock solenoid on to the cartridge. Install the retaining nuts and tighten to a torque of 5 to 8 Nm (4 to 6 lb ft). NOTE: There are no O-rings on the diff lock solenoid. Assemble the modulator piston (1), modulation spring (2) and retaining sleeve (). Apply petroleum jelly to the steel balls (4) and insert them into the bore at the end of the modulator spool (5).Push on the retaining sleeve () and compress the modulation spring (2) a small amount. Install the end of the modulator piston pin into the modulator spool (5) and release the retaining sleeve ().Install the preload spring (6) onto the assembly. STEP 1 RD02E111 Install the PTO modulation spool into the valve. Install the plug and tighten to a torque of 4 to 54 Nm (25 to 40 lb ft). 5-8

9 Installation STEP 14 RI02E059 Apply petroleum jelly to new O-rings and install the O-rings onto the valve mounting plate. STEP RI02D INLET 4. DIFF LOCK SOLENOID 2. LUB INLET 5. MOUNTING BOLT. PTO PWM SOLENOID 1. Position the valve onto the mounting plate. Install the mounting bolts (5) and tighten to a torque of 41 to 46 Nm (0 to 4 lb ft). 2. Connect the wire harness connectors to the diff lock solenoid (4) and PTO solenoid ().. Connect and tighten the tube to the lube inlet fitting (2). 4. Connect and tighten the tube to the valve inlet fitting (1). 5-9

10 PTO And Diff Lock Valve Cross Section RT98A DIFF LOCK SOLENOID 6. MODULATOR PISTON PIN 2. CARTRIDGE 7. RETAINER SLEEVE. PTO SOLENOID 8. MODULATION SPRING 4. MODULATOR SPOOL 9. PRELOAD SPRING 5. STEEL BALL 10. MODULATION PISTON 5-10

Section 21 Chapter 7 TRANSMISSION CONTROL VALVES AND INCHING VALVE NH

Section 21 Chapter 7 TRANSMISSION CONTROL VALVES AND INCHING VALVE NH Section Chapter 7 TRANSMISSION CONTROL VALVES AND INCHING VALVE 6-750NH SECTION - TRANSMISSION CONTROL VALVES AND INCHING VALVE - CHAPTER 7 TABLE OF CONTENTS SPECIAL TORQUES... - POWERSHIFT TRANSMISSION