WATER COOLED SLOW SPEED DIESEL ENGINES HORIZONTAL WATER COOLED HD1120NM PARTS CATALOGUE 2019 ALL PARTS ARE SUBJECT TO STANDARD HOFFMANN TERMS AND CONDITIONS OF SALE 2015 Replacement parts are not manufactured, sold or warranted by O.E.M's and any part numbers and or descriptions are used for identification purposes only. Manufacturers names, numbers and descriptions are used for reference purposes only and it is not implied that any part listed is the product of the manufacturers. All pictures and drawings are for reference purposes only; any specifications appearing in any documents emanating from The Company are approximate only and are subject to modifications without notice. All rights reserved, material contained in this publication for which copyright is acknowledged. No part of this publication may be reproduced or transmitted in any form or by any means without written permission of the copyright holder. Copyright Hoffmann Power 2019.
1. Engine Block Assembly (Fig. I) 1. Cylinder Head Nut 4 HD112-10032 2. Cylinder Head Gasket 1 3. Cylinder Liner 1 HD112-010001 4. Water Seal Ring (Liner O Ring) 2 5. Cylinder Head Bolt (1) 2 6. Cylinder Head Bolt (2) 2 7. Bolt M10 X 30 4 8. Washer 10 4 9. Water Block Gasket (Hopper) 1 HD1120-01007 / HD1110-01007 10. Engine Block 1 11. Lifting Eye 1 HD1110-01010 12. Washer 12 1 13. Lifting Eye Bolt 1 14. Washer 1 15. Bolt M8 X 18 7 GB5783-M8X20 16. Washer 8 15 17. Upper Cover 1 18. Upper Cover Gasket 1 HD1120-010012 19. Pin M5 X 12 2 20. Gear Cover Gasket 1 HD1120-010011 21. Bearing 6305 2 GB276-6305 22. Retainer Clip Ball Bearing 2 23. Starting Shaft Bush 1 24. Camshaft Front Bush 1
25. Speed Control Gear Shaft 1 26. Bolt M8 X 95 3 27. Bolt M8 X 55 6 28. Bolt M10 X 25 1 29. Washer 8 10 30. Washer 10 1 31. Crankshaft Bearing Clamp 1
2. Engine block Assembly 2 (Fig.II) 1. Engine Block 1 2. Washer 10 2 3. Washer 10 2 4. Bolt, M10x20 2 5. Gasket, Rear Cover 1 HD1120-010015 6. Oil Pressure Indicator 1 HD1120-03115/6/7 HD1120-031100 7. Washer, Oil Pressure Indicator 1 8. Oil or Fire Plug 1 9. Camshaft rear Bush 1 HD12-01032 10. Bolt M8x25 19 GB5783-86 / 8X25 11. Washer 8 38 GB97.1-85/8 12. Rear Cover 1 13. Pressure Adjusting Plunger 1 14. Pressure Adjusting Spring 1 15. Washer 12 1 16. Pressure Adjusting Screw 1 17. Cap Screw 2 18. Washer 2 19. Washer, Drain Plug 1 HD1110-01025 20. Sump Drain Plug 2 HD1110-01026 21. Sump Gasket 1 HD1110-01033 22. Sump Cover 1 HD1110-01200 23. Bearing 6305, Balance Shaft 2 GB276-6305 24. Sump Plug Seal Ring 1 25. Bolt, M8 x 20 16 GB5783-M8X20 26. Washer 8 16 GB97.1-85/8
27. Gasket, Main Bearing Cover 1 HD1120-010029 28. Gasket, Oil Pump 1 HD1110-09203 29. Bolt, M8 x 30 3 GB5787-86 / 8X32 30. Balancing Shaft Cover 1 31. Gasket Balancer Shaft 1 HD1110-01009 32. Camshaft Cover (Fits All) 1 HD12-01030 33. Gasket, Camshaft Cover (Fits All) 1 HD1110-01031
3. Cylinder Head Assembly (Fig. III) 1. Nut M10 3 2. Washer 1 3. Cylinder Head Cover 1 HD1120-033001 4. Screw, M6x12 2 5. Washer 6 1 6. Decompression Cover 1 7. Gasket Decompression Cover 1 8. Torsion Spring, Decompression Shaft 1 9. Decompression Cover 1 HD1120-032004-C 10. M6 Nut 2 GB6177-86/6 11. Bolt, M6x12 1 GB5787-86 / 6X12 12. Decompression Lever Bracket 1 13. Gasket Cylinder Head Cover 1 HD1120-030007 14. Exhaust Valve, Rocker Arm 1 HD1120-030101 15. Nut, M 12x1.25 2 16. Adjusting Screw 2 17. Locating Pin, Rocker Arm Bracket 1 18. Rocker Arm Shaft Bracket 1 HD1120-032002-2 19. Plug 2 20. Washer 12 1 21. Washer 12 1 22. Nut, M12 1 23. Valve Rocker Arm Shaft 1 24. Rocker Arm Bush 2 25. Stud, Bold, Rocker Arm Shaft Bracket 1 26. Inlet Valve Rocker Arm 1 27. Valve Spring 2 HD1120-030004 28. Valve Spring Seat 2
29. Valve Collet (cotters) Pair 2 30. Pin (5x12) 1 31. Valve Guide 2 HD1120-031004 32. Nut M8 2 GB6177-86/8 33. Washer 8 2 34. Washer 8 2 35. Stud M8x55 2 GB5787-86 / 8X55 36. Bolt, M12x30 2 37. Washer 12 2 38. Exhaust pipe Gasket 1 HD1120/030003 39. Cylinder Head 1 HD1120-031001 40. Inlet Valve Seat 1 HD1120-031002 41. Exhaust Valve Seat 1 HD1120-031003-1 42. Exhaust Valve 1 HD1120-030002-2 43. Inlet Valve 1 HD1120-030001 44. Gasket, Inlet Pipe 1 HD1120-030010 45. Washer 10 3 46. Stud M10x25 3 47. Nut, M10 3 48. Plug 1 49. R3/8 Drain Cork 1 50. Bolt, M10x35 1 51. Washer 10 1 52. Washer 10 1 53. Decompression Shaft 1 54. Decompression Shaft Adjusting Screw 1 55. O Ring Seal 56. Set Screw M6x11 57. Rocker Shaft Jump Ring 58. Rocker Shaft Head Flange
4. HD1120 Piston & Connecting Rod Assembly (Fig. IV) 1. Piston Ring set 2. Piston Ring Set 3. Piston Ring set 4. Piston125mm 1 HD1120-04001 5. Piston Pin (Thick 36mm Length 96mm) 1 HD1115-04004 6. Piston Pin Circlip 2 GBT893.1-86/36 7. Connecting Rod Bush 1 HD1120-042003 8. Conrod 1 HD1120-042001 9. Conrod Bearing (Pair) 1 HD1120-040005 10. Connecting Rod Cap 1 11. Bolt, Connecting Rod 2 HD1120-042004
5. HD1120 Crankshaft & Balancing Shaft Assembly (Fig. V) 1. Bolt, M8x18 2 GB5783-M8X20 2. Washer 8 2 3. Circlip, Uper Balancer Shaft 2 4. Balancer Shaft Gear 2 HD1105-05012 5. Key, (C6x16) 2 GB/T1096-6X16 6. Upper Balancing Shaft 1 7. Lower Balancing Shaft 1 8. Oil Seal 65x90x10 1 HD1120-05007-1 9. Main Bearing Cover 1 10. 11. Retainer Circlip (70) 1 GBT894.1-86/70 HD1120-050007 12. Deep Groove Ball Bearing, NVP 315/C3 1 GBT283-94/NVP315E 13. Crankshaft Counter Balancer 1 HD1120-051002 14. Bearing Baffle 2 15. Washer, 5 4 16. Screw, 5x10 4 17. Key, 12x45 1 18. Crankshaft 1 HD1120-051001 19. Key, 8x18 1 20. Crankshaft Oil Plug 1 21. Retainer 1 22. Roller Bearing, NJ2214E 1 GBT283-94/NJ2214E/C3 23. Crankshaft Timing Gear 1 HD1120-050008 24. Retainer, Circlip 30 1 GBT894.1-86/30 25. Oil Orifice 30 1 26. Flywheel 1 HD1120-050001 27. Flywheel Thrust Washer 1 HD1120-050012 28. Flywheel Nut 1 HD1120-050011
29. V Belt Pulley (Fits HD1110 & HD1115) 1 HD1110-05001 30. Washer 14 3 31. Bolt M14x35 3 32. Safety Gasket 4 33. Counter Balancing Bolt 4
6. HD1120 Water Block Assembly (Fig.VI) 1. Water Block Funnel 1 2. Funnel Gasket 1 3. Water Block (Tank) 1 4. Bolt M6x15 3 GB5783-86/6X15 5. Spring Washer 6 3 6. Flat Washer 6 3 GB97.1-85/6 7. Float Head 1 8. Bolt M8x25 6 GB5783-M8X25 9. Washer 8 6 GB97.1-85/8 10. Float Rod 1 11. Float 1 12. Washer 8 2 GB93-8
7. HD1120 Fuel System (Fig.VII) 1. Fuel Tank Cap 1 HD1120-077000 2. Fuel Tank Strainer (Fits) HD1110 & HD1115 1 HD1105-07400 3. Fuel Tank 1 HD1120-071000B 4. Bearing Plate 1 5. Damping Rubber Gasket 2 6. Sleeve 2 7. Gasket (Washer) 4 8. Washer 8 2 GB97.1-8518 9. Bolt, M8x25 2 GB5783-M8X25 10. Sleeve 2 11. Damping Rubber 2 12. Decorating Cover 1 HD1120-071001 13. Washer 12 2 14. Connecting Bolt 1 15. Fuel Filter Assembly 1 HD-C0506A-3000 16. Fuel Return Pipe 1 17. Injector 1 HD1120-180000 18. High Pressure Injector Pipe 1 HD1120-0720000 19. Injector Pump Assembly 1 HD1120-170000 20. Fuel Pipe 1 HD1120-073000 21. Fuel Pipe, Delivery 1 HD1120-079000-1
8. HD1120 Intake System (Fig. VIII) 1. Air Filter Assembly 1 HD1120-111000 2. Nut, M8 2 GBT6177-86/8 3. Washer Spring 2 GB93-8 4. Washer Flat 2 GBT97.1-1985/8 GB97.1-85/8 5. Air Filter Gasket 1 HD1120-110002 6. Inlet Pipe 1 HD1120-110001 7. Bolt, M8x30 2 GB5787-86/835
9. HD1120 Exhaust Assembly (Fig. IX) 1. Silencer Assembly 1 HD1120-081000 2. Nut 1 HD1120-080002 3. Exhaust Pipe 1 HD1120-080001A
10. HD1120 Lubricating System (Fig. X) 1. Connecting Bolt 1 HD1120-090001 2. 2 3. Connecting Pipe 1 HD1120-090003 4. Oil Pump Rotor (Fits) HD1110 & HD1115 1 HD1110-09204 HD1120-092000B 5. Oil Filter Strainer Pick-up 1 HD1110-09320 6. Washer 2 7. Connecting Banjo Bolt 1 HD1110-09001 8. Oil Pipe 1 9. Connecting Bolt 2 HD1110-09001 10. Washer 4 11. High Pressure Pipe Balancer 1 12. Oil Strainer Screen 1 HD1110-09320
11. HD1120 Gear Cover Assembly (Fig. XI) 1. Gear Cover 1 HD1120-100001 2. Oil Dip Stick 1 HD1110-01100 3. Oil Seal 35x58x12 1 HD1110-35X58X1 4. Oil Spanner Shaft 1 5. Oil Spanner Gasket 1 6. Oil Spanner Bracket 1 7. Screw M6x25 1 8. Oil Corrector 1 9. Washer 6 9 10. Washer 6 9 11. Screw M6x12 6 12. Name Plate 1 13. Speed Control Lever (knob) 1 HD1110-10200 14. Washer 8 1 15. Indicator Drop of Rotate Speed 1 16. Riveting Unit of Speed Control Rod & Arm 1 17. Speed Control Slide Gasket 1 18. Washer 8 3 GB97.1-85/8 19. Nut M8 4 GBT6177-86/8 20. Speed Control Tension Spring (Governor) 1 HD1110-10103 21. Adjusting Screw 1 22. Nut M8 2 GB6177-86/6 23. Speed Control Lever 1 HD1110-10105 24. Bolt, M8x40 1 GB5782-86/8X40 25. Set Screw 1 26. Crank Case Ventilation Part 1 27. Oil Pump Adjusting Gasket 1 HD1120-10034 28. Stud, M8x22 3
29. Starting Gear 1 HD1110-10302 30. Starting Gear Shaft 1 HD1110-10303 31. Key, 8x16 1 GBT1096-2003/8X18 32. Starting Shaft Bush 1 HD1110-10010 33. Pin 4x25 1 34. Speed Control Gear Bush 1 HD1110-10107 35. Speed Control Gear 1 HD1120-101301 36. Speed Governor Ball Spacer 1 HD1110-10109 37. Screw,M6x18 3 38. Steel Ball 6 GB/T308-2002 39. Governor Ball Race 1 HD1110-10120 40. Thrust Ball Bearing (8106) 1 HD12-51106 41. Speed Control Lever (Governor Fork) 1 HD1110-10111 42. Adjusting Washer 1 43. Clamp 1
12. HD1120 Camshaft Assembly (Fig. XII) 1. Camshaft Gear 1 HD1120-020003 2. Key 10x16 1 GB1096-79 3. Camshaft 1 HD1120-020001C 4. Cam Follower (Valve Tappit) 2 5. Push Rods 2 HD1120-020002
13. HD1120 Electric Starting System (Fig. X III) 1. Starter Motor 1 HD1120-1900009 2. Gasket, Starter Motor 1 3. Starter Bracket Rear Cover 1 4. Ring Gear 1 5. Flywheel 1
14. HD1120 Generator & light Fitting Assembly (Fig. X IV) 1. Flywheel Generator 1 2. Light Fitting Assembly 1 3. Lamp Chimney 1
15. Injector Complete Assembly - HD1120-18000-15 (Fig. X V) 1. Washer 1 2. Cap Nut Fox Injector 1 3. Injector Nozzle (Z15B)(155 S 530) 1 4. Injector Body 1 5. Jib Component 1 6. Pressure Adjusting Spring 1 7. Spring Upper Gasket 1 8. Pressure Adjusting Screw 1 9. Washer 1 10. Cap Nut 1 11. Washer 2 12. Fuel overflow Pipe Connecting Screw 1 13. Fuel Inlet Pipe Connector 1 14. Washer 1 15. Injector Complete 1 HD1120-180000
16. Fuel Injector Pump Assembly (HD1120-170000) (Fig. X VI) 1. Delivery Valve Holder 1 2. O Type Seal Ring 1 3. Delivery Valve Spring 1 4. Delivery Valve Washer 1 5. Delivery Valve 1 6. Plunger & Barrel Assembly 1 7. Vent Screw 1 8. Washer 10x6.5x1 1 9. Fuel Inlet Pipe Screw 1 10. Washer 27x13x1 2 11. Injector Pump Body 1 12. Gear Rack Pin 1 13. Guide Pin 1 14. Snap Ring 1 15. Adjusting Gear 1 16. Spring Upper Seat 1 17. Plunger Spring 1 18. Tappit Part 1 19. Fuel Injector Pump 1 HD1120-170000
17. HD1120 Transmission Assembly (Fig. XVIII) 1. Big Belt Pulley 1 HD1120-EH32N-060015 2. Bolt, M6x22 3 GB5787-86 / 6x22 3. Washer 6 3 GB97.1 85/6 4. Tension Pulley Bolt 1 5. Tension Pulley Bracket 1 6. Flat Washer 8 2 GB97.1 85/8 7. Spring Washer 8 2 GB93-8 8. Tension Pulley 1 HD1110-06300 9. Bolt, M8x20 2 GB5783-M8x20 10. Ball Bearing 6202-2Z 1 HD175A-6202/2Z 11. Seal Ring 1 12. Circlip 35 1 13. Ring 2 14. Washer 12 1 15. Nut M12 1 16. Fan Belt (10x1195 1 GBT12732-1996 / 10x119 17. Cushion Block 1
18. HD1120 Radiator Assembly (Fig. XIX) 1. Hopper Bottom 1 HD1120-EH32N-060001 2. Radiator Gasket 1 HD1120-EH32N-060005 3. Radiator 1 HD1120-EH32N-061000 4. Bolt M6x20 14 GB5787-86 / 6X20 5. Spring Washer 6-140HV 14 6. Flat Washer 6 14 GB97.1-85/6 7. Nut 6 14 GB6177-86/6 8. Bolt M8x20 3 GB5783-M8x20 9. Washer 8 3 GB97.1-85/8 10. Fuel Tank Support 1
19. HD1120 Fan Assembly (Fig. XX) 1. Nut M12x1.25 Left 1 2. Impeller 1 3. Impeller Washer 1 4. Rivet 4x12 4 5. Ball Bearing 60201 1 6. Nut M8 2 7. Flat Washer 8 140HV 2 GB97.1-1985/8 GBT97.1-85x8 8. Spring Washer 8 2 GB93-8 9. Bolt M8x30 2 GB5787-86 / 8x32 10. Fan Cover 1 11. Key 5x10 2 GB1096-5x10 12. Fan Shaft 1 13. Bolt M8x20 2 GB5783-M8x20 14. Washer 8 2 15. Nut M12x1.25 1 16. Small Belt Pulley 1 17. Ball Bearing 60202 1 18. End Cover 1 19. Bolt M4x12 3
20. HD1120 Fan Assembly (Fig. XXI) 1. Bolt M6x20 4 GB5787-86 / 6x20 2. Spring Washer 6 4 3. Flat Washer 6 4 GBT97.1-1985/5/6 GB97.1-85/6 4. Shutter (A) 1 5. Radiator Shell 1 6. Washer 4 8 7. Washer 4-140HV 8 8. Bolt M4x12 8 9. Shutter (B) 1 10. Bolt M6x20 2 GB5787-86/6x20