Information injection-pump assembly
BOSCH
9 460 612 336
9460612336
ZEXEL
104746-1401
1047461401
ISUZU
8970906331
8970906331

Rating:
Components :
0. | INJECTION-PUMP ASSEMBLY | 104746-1401 |
1. | _ | |
2. | FUEL INJECTION PUMP | 104646-1401 |
3. | NUMBER PLATE | 146924-7900 |
4. | _ | |
5. | CAPSULE | 146620-0120 |
6. | ADJUSTING DEVICE | |
7. | NOZZLE AND HOLDER ASSY | 105158-2322 |
8. | Nozzle and Holder | 8-97079-653-0 |
9. | Open Pre:MPa(Kqf/cm2) | 14.7{150} |
10. | NOZZLE-HOLDER | 105088-1140 |
11. | NOZZLE | 105007-1310 |
Scheme ###:
1/6. | [1] | 146601-0700 | PACKING RING |
6. | [1] | 146100-0120 | SUPPLY PUMP |
9. | [1] | 146103-0000 | COVER |
10. | [2] | 139104-0000 | FLAT-HEAD SCREW |
12. | [1] | 146200-0320 | DRIVE SHAFT |
12/1. | [1] | 146200-0300 | DRIVE SHAFT |
12/2. | [1] | 146201-0000 | WOODRUFF KEY |
12/3. | [2] | 146202-0100 | DAMPER |
12/4. | [1] | 146203-0000 | TOOTHED GEAR |
17. | [1] | 146204-0000 | PLAIN WASHER |
20. | [1] | 146210-1720 | ROLLER SET |
24. | [1] | 146303-0000 | BEARING PIN |
25. | [1] | 146304-0000 | BEARING PIN |
26. | [1] | 146305-0000 | CLAMPING BAND |
27. | [1] | 146205-0000 | SLOTTED WASHER |
29. | [1] | 146220-0020 | CAM PLATE |
30. | [1] | 146600-0800 | O-RING |
31. | [1] | 146300-4400 | PUMP PLUNGER |
32. | [1] | 146301-0000 | SLIDING PIECE |
33. | [1] | 146603-0700 | SHIM D17.5&7.5T0.60 |
34. | [1] | 146302-4100 | COMPRESSION SPRING |
34B. | [1] | 146302-4000 | COMPRESSION SPRING |
35/1. | [0] | 146603-0700 | SHIM D17.5&7.5T0.60 |
35/1. | [0] | 146603-0800 | SHIM D17.5&7.5T0.70 |
35/1. | [0] | 146603-0900 | SHIM D17.5&7.5T0.90 |
35/1. | [0] | 146603-1000 | SHIM D17.5&7.5T1.00 |
35/1. | [0] | 146603-1100 | SHIM D17.5&7.5T1.20 |
35/1. | [0] | 146603-3600 | SHIM D17.5&7.5T2.40 |
36. | [1] | 146600-0800 | O-RING |
37. | [1] | 146310-0700 | COVER |
38. | [2] | 146620-5000 | BLEEDER SCREW |
39. | [1] | 146310-0100 | COVER |
40. | [2] | 146620-5000 | BLEEDER SCREW |
43. | [1] | 146230-0000 | SHIM |
44. | [1] | 146230-0100 | PLAIN WASHER |
45. | [1] | 146231-0001 | SLOTTED WASHER |
47. | [2] | 146233-0000 | SLOTTED WASHER |
48/1. | [1] | 146603-0000 | SHIM D17.0&5.2T0.50 |
48/1. | [1] | 146603-0100 | SHIM D17.0&5.2T0.80 |
48/1. | [1] | 146603-0200 | SHIM D17.0&5.2T1.00 |
48/1. | [1] | 146603-0300 | SHIM D17.0&5.2T1.20 |
48/1. | [1] | 146603-0400 | SHIM D17.0&5.2T1.50 |
48/1. | [1] | 146603-0500 | SHIM D17.0&5.2T1.80 |
48/1. | [1] | 146603-0600 | SHIM D17.0&5.2T2.00 |
48/1. | [1] | 146690-1400 | SHIM D17&5.2T0.9 |
48/1. | [1] | 146690-1500 | SHIM D17&5.2T1.1 |
48/1. | [1] | 146690-1600 | SHIM D17&5.2T1.3 |
48/1. | [1] | 146690-1700 | SHIM D17&5.2T1.4 |
48/1. | [1] | 146690-1800 | SHIM D17&5.2T1.6 |
48/1. | [1] | 146690-1900 | SHIM D17&5.2T1.7 |
48/1. | [1] | 146690-5800 | SHIM |
48/1. | [1] | 146690-5900 | SHIM |
48/1. | [1] | 146690-6000 | SHIM |
48/1. | [1] | 146690-6100 | SHIM |
48/1. | [1] | 146690-6200 | SHIM |
48/1. | [1] | 146690-6300 | SHIM |
48/1. | [1] | 146690-6400 | SHIM |
48/1. | [1] | 146690-6500 | SHIM |
48/1. | [1] | 146690-6600 | SHIM |
48/1. | [1] | 146690-6700 | SHIM |
48/1. | [1] | 146690-6800 | SHIM |
48/1. | [1] | 146690-6900 | SHIM |
48/1. | [1] | 146690-7000 | SHIM |
48/1. | [1] | 146690-7100 | SHIM |
48/1. | [1] | 146690-7200 | SHIM |
48/1. | [1] | 146690-7300 | SHIM |
48/1. | [1] | 146690-7400 | SHIM |
48/1. | [1] | 146690-7500 | SHIM |
48/1. | [1] | 146690-7800 | SHIM |
49. | [2] | 146234-0500 | GUIDE PIN |
50. | [1] | 146403-4820 | HYDRAULIC HEAD |
50. | [1] | 146403-4820 | HYDRAULIC HEAD |
50. | [1] | 146403-4820 | HYDRAULIC HEAD |
51. | [1] | 146600-0000 | O-RING |
52/1. | [1] | 146420-0000 | SHIM D9.5&3.0T1.90 |
52/1. | [1] | 146420-0100 | SHIM D9.5&3.0T1.92 |
52/1. | [1] | 146420-0200 | SHIM D9.5&3.0T1.94 |
52/1. | [1] | 146420-0300 | SHIM D9.5&3.0T1.96 |
52/1. | [1] | 146420-0400 | SHIM D9.5&3.0T1.98 |
52/1. | [1] | 146420-0500 | SHIM D9.5&3.0T2.00 |
52/1. | [1] | 146420-0600 | SHIM D9.5&3.0T2.02 |
52/1. | [1] | 146420-0700 | SHIM D9.5&3.0T2.04 |
52/1. | [1] | 146420-0800 | SHIM D9.5&3.0T2.06 |
52/1. | [1] | 146420-0900 | SHIM D9.5&3.0T2.08 |
52/1. | [1] | 146420-1000 | SHIM D9.5&3.0T2.10 |
52/1. | [1] | 146420-1100 | SHIM D9.5&3.0T2.12 |
52/1. | [1] | 146420-1200 | SHIM D9.5&3.0T2.14 |
52/1. | [1] | 146420-1300 | SHIM D9.5&3.0T2.16 |
52/1. | [1] | 146420-1400 | SHIM D9.5&3.0T2.18 |
52/1. | [1] | 146420-1500 | SHIM D9.5&3.0T2.20 |
52/1. | [1] | 146420-1600 | SHIM D9.5&3.0T2.22 |
52/1. | [1] | 146420-1700 | SHIM D9.5&3.0T2.24 |
52/1. | [1] | 146420-1800 | SHIM D9.5&3.0T2.26 |
52/1. | [1] | 146420-1900 | SHIM D9.5&3.0T2.28 |
52/1. | [1] | 146420-2000 | SHIM D9.5&3.0T2.30 |
52/1. | [1] | 146420-2100 | SHIM D9.5&3.0T2.32 |
52/1. | [1] | 146420-2200 | SHIM D9.5&3.0T2.34 |
52/1. | [1] | 146420-2300 | SHIM D9.5&3.0T2.36 |
52/1. | [1] | 146420-2400 | SHIM D9.5&3.0T2.38 |
52/1. | [1] | 146420-2500 | SHIM D9.5&3.0T2.40 |
52/1. | [1] | 146420-2600 | SHIM D9.5&3.0T2.42 |
52/1. | [1] | 146420-2700 | SHIM D9.5&3.0T2.44 |
52/1. | [1] | 146420-2800 | SHIM D9.5&3.0T2.46 |
52/1. | [1] | 146420-2900 | SHIM D9.5&3.0T2.48 |
52/1. | [1] | 146420-3000 | SHIM D9.5&3.0T2.50 |
52/1. | [1] | 146420-3100 | SHIM D9.5&3.0T2.52 |
52/1. | [1] | 146420-3200 | SHIM D9.5&3.0T2.54 |
52/1. | [1] | 146420-3300 | SHIM D9.5&3.0T2.56 |
52/1. | [1] | 146420-3400 | SHIM D9.5&3.0T2.58 |
52/1. | [1] | 146420-3500 | SHIM D9.5&3.0T2.60 |
52/1. | [1] | 146420-3600 | SHIM D9.5&3.0T2.62 |
52/1. | [1] | 146420-3700 | SHIM D9.5&3.0T2.64 |
52/1. | [1] | 146420-3800 | SHIM D9.5&3.0T2.66 |
52/1. | [1] | 146420-3900 | SHIM D9.5&3.0T2.68 |
52/1. | [1] | 146420-4000 | SHIM D9.5&3.0T2.70 |
52/1. | [1] | 146420-4100 | SHIM D9.5&3.0T2.72 |
52/1. | [1] | 146420-4200 | SHIM D9.5&3.0T2.74 |
52/1. | [1] | 146420-4300 | SHIM D9.5&3.0T2.76 |
52/1. | [1] | 146420-4400 | SHIM D9.5&3.0T2.78 |
52/1. | [1] | 146420-4500 | SHIM D9.5&3.0T2.80 |
52/1. | [1] | 146420-4600 | SHIM D9.5&3.0T2.82 |
52/1. | [1] | 146420-4700 | SHIM D9.5&3.0T2.84 |
52/1. | [1] | 146420-4800 | SHIM D9.5&3.0T2.86 |
52/1. | [1] | 146420-4900 | SHIM D9.5&3.0T2.88 |
52/1. | [1] | 146420-5000 | SHIM D9.5&3.0T2.90 |
52/1. | [1] | 146420-5100 | SHIM D9.5&3.0T1.74 |
52/1. | [1] | 146420-5200 | SHIM D9.5&3.0T1.76 |
52/1. | [1] | 146420-5300 | SHIM D9.5&3.0T1.78 |
52/1. | [1] | 146420-5400 | SHIM D9.5&3.0T1.80 |
52/1. | [1] | 146420-5500 | SHIM D9.5&3.0T1.82 |
52/1. | [1] | 146420-5600 | SHIM D9.5&3.0T1.84 |
52/1. | [1] | 146420-5700 | SHIM D9.5&3.0T1.86 |
52/1. | [1] | 146420-5800 | SHIM D9.5&3.0T1.88 |
54. | [4] | 146433-0100 | GASKET D12&6.4T1.00 |
55. | [4] | 146430-0020 | DELIVERY-VALVE ASSEMBLY |
56. | [4] | 146432-0000 | COMPRESSION SPRING |
58. | [4] | 146440-0120 | FITTING |
60. | [4] | 139106-0100 | FLAT-HEAD SCREW |
67. | [1] | 146820-6720 | GOVERNOR COVER |
67/1. | [1] | 146508-1022 | GOVERNOR COVER |
67/2. | [1] | 146515-0320 | CONTROL SHAFT |
67/3. | [1] | 146600-0100 | O-RING |
67/4. | [2] | 139310-0200 | PLAIN WASHER |
67/4. | [2] | 139310-0200 | PLAIN WASHER |
67/5. | [1] | 146530-0000 | CONTROL LEVER |
67/5B. | [1] | 146530-0100 | CONTROL LEVER |
67/5C. | [1] | 146832-1500 | CONTROL LEVER |
67/5D. | [1] | 146832-1600 | CONTROL LEVER |
67/6. | [2] | 014110-6440 | LOCKING WASHER |
67/6. | [2] | 014110-6440 | LOCKING WASHER |
67/7. | [1] | 013020-6040 | UNION NUT M6P1H5 |
67/8. | [1] | 146515-0020 | LEVER SHAFT |
67/9. | [1] | 146587-4500 | COILED SPRING |
67/10. | [1] | 146600-0200 | O-RING |
67/11. | [1] | 146602-0100 | PLAIN WASHER D14&10.1T1.50 |
67/12. | [1] | 146540-1300 | CONTROL LEVER |
67/12B. | [1] | 146540-1400 | CONTROL LEVER |
67/13. | [1] | 146621-1700 | UNION NUT |
67/14. | [1] | 146621-1700 | UNION NUT |
67/15. | [1] | 146526-2800 | BLEEDER SCREW |
67/16. | [1] | 146526-2800 | BLEEDER SCREW |
67/18. | [1] | 146587-2000 | COILED SPRING |
67/19. | [1] | 146541-0000 | ANGLE PIECE |
67/23. | [1] | 146925-2520 | BRACKET |
67/24. | [2] | 139006-4500 | BLEEDER SCREW |
67/25. | [1] | 013020-6040 | UNION NUT M6P1H5 |
67/26. | [1] | 146925-2920 | BRACKET |
67/78. | [1] | 146600-4400 | SEAL RING |
67/200. | [1] | 139308-0300 | PLAIN WASHER |
67/201. | [1] | 146545-3400 | THREADED PIN L53.00 |
67/201B. | [1] | 146545-3500 | THREADED PIN L55.00 |
67/201C. | [1] | 146545-3600 | THREADED PIN L57.00 |
67/202. | [1] | 139208-0900 | UNION NUT |
67/203. | [1] | 146600-1200 | O-RING |
95. | [1] | 146851-4020 | FULCRUM LEVER |
104. | [2] | 146568-0000 | SLOTTED SPRING PIN |
105. | [2] | 026508-1140 | GASKET D11.4&8.2T1 |
106. | [2] | 146588-0500 | COILED SPRING |
107. | [1] | 146569-0300 | UNION NUT |
108. | [1] | 146570-0100 | GOVERNOR SHAFT |
109. | [1] | 146600-0400 | O-RING |
110/1. | [1] | 146571-0000 | SHIM D20.2&8.3T1.05 |
110/1. | [1] | 146571-0100 | SHIM D20.2&8.3T1.25 |
110/1. | [1] | 146571-0200 | SHIM D20.2&8.3T1.45 |
110/1. | [1] | 146571-0300 | SHIM D20.2&8.3T1.65 |
110/1. | [1] | 146571-0400 | SHIM D20.2&8.3T1.85 |
110/1. | [1] | 146571-0500 | SHIM D20.2&8.3T1.15 |
110/1. | [1] | 146571-0600 | SHIM D20.2&8.3T1.35 |
110/1. | [1] | 146571-0700 | SHIM D20.2&8.3T1.55 |
110/1. | [1] | 146571-0800 | SHIM D20.2&8.3T1.75 |
111. | [1] | 146602-0600 | PLAIN WASHER D20&8.4T1.40 |
112. | [1] | 146572-0020 | FLYWEIGHT ASSEMBLY |
114. | [1] | 146602-2600 | PLAIN WASHER D34&13T1.0 |
115. | [1] | 146975-4200 | SLIDING SLEEVE |
116. | [1] | 146576-0200 | CAP |
117/1. | [1] | 146577-1800 | PLUG L2.10 |
117/1. | [1] | 146577-1900 | PLUG L2.30 |
117/1. | [1] | 146577-2000 | PLUG L2.50 |
117/1. | [1] | 146577-2100 | PLUG L2.70 |
117/1. | [1] | 146577-2200 | PLUG L2.90 |
117/1. | [1] | 146577-2300 | PLUG L3.10 |
117/1. | [1] | 146577-2400 | PLUG L3.30 |
117/1. | [1] | 146577-2500 | PLUG L3.50 |
117/1. | [1] | 146577-2600 | PLUG L3.70 |
117/1. | [1] | 146577-2700 | PLUG L3.90 |
117/1. | [1] | 146577-2800 | PLUG L4.10 |
117/1. | [1] | 146577-2900 | PLUG L4.30 |
117/1. | [1] | 146577-3000 | PLUG L4.50 |
117/1. | [1] | 146577-3100 | PLUG L4.70 |
117/1. | [1] | 146577-3200 | PLUG L4.90 |
117/1. | [1] | 146577-3300 | PLUG L5.10 |
117/1. | [1] | 146577-6700 | PLUG L2.2 |
117/1. | [1] | 146577-6800 | PLUG L2.4 |
117/1. | [1] | 146577-6900 | PLUG L2.6 |
117/1. | [1] | 146577-7000 | PLUG L2.8 |
117/1. | [1] | 146577-7100 | PLUG L3.0 |
117/1. | [1] | 146577-7200 | PLUG L3.2 |
117/1. | [1] | 146577-7300 | PLUG L3.4 |
117/1. | [1] | 146577-7400 | PLUG L3.6 |
117/1. | [1] | 146577-7500 | PLUG L3.8 |
117/1. | [1] | 146577-7600 | PLUG L4.0 |
117/1. | [1] | 146577-7700 | PLUG L4.2 |
117/1. | [1] | 146577-7800 | PLUG L4.4 |
117/1. | [1] | 146577-7900 | PLUG L4.6 |
117/1. | [1] | 146577-8000 | PLUG L4.8 |
117/1. | [1] | 146577-8100 | PLUG L5.0 |
117/1. | [1] | 146877-0000 | PLUG L5.2 |
117/1. | [1] | 146877-0100 | PLUG L5.3 |
117/1. | [1] | 146877-0200 | PLUG L5.4 |
117/1. | [1] | 146877-0300 | PLUG L5.5 |
117/1. | [1] | 146877-4700 | PLUG |
117/1. | [1] | 146877-4800 | PLUG |
117/1. | [1] | 146877-4900 | PLUG |
117/1. | [1] | 146877-5000 | PLUG |
120. | [1] | 146879-5020 | RETAINING PIN |
122. | [1] | 146580-1400 | GOVERNOR SPRING |
123. | [4] | 139106-0200 | FLAT-HEAD SCREW |
130. | [1] | 146421-0020 | CAPSULE |
130/2. | [1] | 026508-1140 | GASKET D11.4&8.2T1 |
130/3. | [1] | 146422-0000 | BLEEDER SCREW |
130/4. | [1] | 146600-0500 | O-RING |
133. | [1] | 146600-0600 | O-RING |
134. | [1] | 146600-0700 | O-RING |
135. | [1] | 146110-1020 | CONTROL VALVE |
135/5. | [1] | 146114-0000 | SPRING WASHER |
136. | [1] | 146120-0120 | OVER FLOW VALVE |
137. | [2] | 139512-0500 | GASKET |
138. | [1] | 146607-7520 | INLET UNION |
200. | [1] | 146206-0100 | COILED SPRING |
205. | [1] | 025804-1610 | WOODRUFF KEY |
206. | [1] | 013121-4140 | UNION NUT M14P1.5H11 |
207. | [1] | 029321-4050 | LOCKING WASHER |
240. | [1] | 146650-1220 | PULLING ELECTROMAGNET |
240/8. | [1] | 146600-1700 | O-RING |
242. | [1] | 146658-7320 | WIRE |
243. | [1] | 146621-1000 | UNION NUT |
245. | [3] | 139512-0500 | GASKET |
246. | [1] | 146125-0020 | EYE BOLT |
247. | [1] | 146605-1920 | INLET UNION |
248. | [1] | 146614-0200 | SPACER BUSHING |
260. | [1] | 146611-1920 | BRACKET |
261. | [2] | 146621-4700 | UNION NUT |
264. | [1] | 016500-5010 | O-RING |
270. | [1] | 146615-3521 | TOOTHED GEAR |
270/1. | [1] | 146615-3500 | TOOTHED GEAR |
270/2. | [1] | 146615-3401 | COUPLING PLATE |
270/3. | [6] | 020006-1870 | BLEEDER SCREW M6P1L18 7T |
800S. | [1] | 146009-9420 | PUMP HOUSING |
800S/1/6. | [1] | 146601-0700 | PACKING RING |
804S. | [1] | 146232-0320 | COMPRESSION SPRING |
805S. | [1] | 146574-0320 | PARTS SET |
810S. | [1] | 146600-1120 | REPAIR SET |
821S. | [1] | 146210-5720 | ROLLER SET |
835S. | [1] | 146598-1000 | CAP |
836S/1. | [1] | 146598-0600 | CAP L18 |
836S/1. | [1] | 146598-0700 | CAP L21 |
836S/1. | [1] | 146598-0800 | CAP L24 |
836S/1. | [1] | 146598-0900 | CAP L27 |
903. | [1] | 146620-0120 | CAPSULE |
903/2. | [1] | 146600-1300 | O-RING &13W1.9 |
906. | [1] | 146924-7900 | NAMEPLATE |
Include in #2:
104746-1401
as INJECTION-PUMP ASSEMBLY
Cross reference number
Zexel num
Bosch num
Firm num
Name
104746-1401
9 460 612 336
8970906331 ISUZU
INJECTION-PUMP ASSEMBLY
4JG2 * K 11CJ INJECTION PUMP ASSY VE4 VE
4JG2 * K 11CJ INJECTION PUMP ASSY VE4 VE
Information:
Engine Runs Smoothly
Possible Causes/Corrections
Dirty Air Cleaner/If the air cleaner has a restriction indicator, see if the red piston is in view. If there is no restriction indicator, restriction can be checked with a water manometer or a vacuum gauge (which measures in inches of water). Make a connection to the piping between the air cleaner and the inlet of the turbocharger. Check with the engine running at full load rpm. Maximum restriction is 635 mm (25 in.) of water. If a gauge is not available, visually check the air cleaner element for dirt. If the element is dirty, clean the element or install a new element. Air Inlet Piping Damage or Restriction/Make a visual inspection of the air inlet system and check for damage to piping, rags in the inlet piping, or damage to the rain cap or the cap pushed too far on the inlet pipe. If no damage is seen, check inlet restriction with a clean air cleaner element. Exhaust System Restriction/Make a visual inspection of the exhaust system. Check for damage to piping or for a bad muffler. If no damage is found, you can check the system by checking the back pressure from the exhaust (pressure difference measurement between exhaust outlet and atmosphere). The back pressure must not be more than 1016 mm (40 in.) of water. You can also check by removing the exhaust pipes from the exhaust manifolds. With the exhaust pipes removed, start and load the engine on a chassis dynamometer to see if the problem is corrected. Fuel Injection Timing Not Correct/Check and make necessary adjustments as in Testing and Adjusting section of this Service Manual. Fuel Setting Is Not Correct/Check and make necessary adjustments as in Testing and Adjusting Section of this Service Manual. See the FUEL SETTING AND RELATED INFORMATION FICHE for the correct fuel setting. Low Quality Fuel/Test the engine with fuel according to recommendations by Caterpillar Tractor Co. For more information see Special Instruction, Form No. SEHS7067, Fuel Recommendations For Caterpillar Diesel Engines. Also, Special Instruction, Form No. SEHS6947 has fuel correction factors and tables. Bad Fuel Nozzle(s)/Bad fuel nozzles will normally cause the engine to misfire and run rough, but can cause too much smoke with engine still running smooth. Remove the fuel nozzles and test as in Testing and Adjusting section of this Service Manual. Valve Adjustment Not Correct or Valve Leakage/Check and make necessary adjustments as in Testing and Adjusting section of this Service Manual. Intake valve clearance is 0.38 mm (.015 in.) and exhaust valve clearance is 0.64 mm (.025 in.). Valve leakage normally causes the engine to misfire and run rough. Bad Fuel Injection Pump/An injection pump can have a good fuel flow coming from it but cause rough running because of slow timing that is caused by wear on the bottom end of the plunger. See the Testing and Adjusting section in this Service Manual for the correct specifications and procedure to check the plungers and lifters.Fuel pumps which are
Possible Causes/Corrections
Dirty Air Cleaner/If the air cleaner has a restriction indicator, see if the red piston is in view. If there is no restriction indicator, restriction can be checked with a water manometer or a vacuum gauge (which measures in inches of water). Make a connection to the piping between the air cleaner and the inlet of the turbocharger. Check with the engine running at full load rpm. Maximum restriction is 635 mm (25 in.) of water. If a gauge is not available, visually check the air cleaner element for dirt. If the element is dirty, clean the element or install a new element. Air Inlet Piping Damage or Restriction/Make a visual inspection of the air inlet system and check for damage to piping, rags in the inlet piping, or damage to the rain cap or the cap pushed too far on the inlet pipe. If no damage is seen, check inlet restriction with a clean air cleaner element. Exhaust System Restriction/Make a visual inspection of the exhaust system. Check for damage to piping or for a bad muffler. If no damage is found, you can check the system by checking the back pressure from the exhaust (pressure difference measurement between exhaust outlet and atmosphere). The back pressure must not be more than 1016 mm (40 in.) of water. You can also check by removing the exhaust pipes from the exhaust manifolds. With the exhaust pipes removed, start and load the engine on a chassis dynamometer to see if the problem is corrected. Fuel Injection Timing Not Correct/Check and make necessary adjustments as in Testing and Adjusting section of this Service Manual. Fuel Setting Is Not Correct/Check and make necessary adjustments as in Testing and Adjusting Section of this Service Manual. See the FUEL SETTING AND RELATED INFORMATION FICHE for the correct fuel setting. Low Quality Fuel/Test the engine with fuel according to recommendations by Caterpillar Tractor Co. For more information see Special Instruction, Form No. SEHS7067, Fuel Recommendations For Caterpillar Diesel Engines. Also, Special Instruction, Form No. SEHS6947 has fuel correction factors and tables. Bad Fuel Nozzle(s)/Bad fuel nozzles will normally cause the engine to misfire and run rough, but can cause too much smoke with engine still running smooth. Remove the fuel nozzles and test as in Testing and Adjusting section of this Service Manual. Valve Adjustment Not Correct or Valve Leakage/Check and make necessary adjustments as in Testing and Adjusting section of this Service Manual. Intake valve clearance is 0.38 mm (.015 in.) and exhaust valve clearance is 0.64 mm (.025 in.). Valve leakage normally causes the engine to misfire and run rough. Bad Fuel Injection Pump/An injection pump can have a good fuel flow coming from it but cause rough running because of slow timing that is caused by wear on the bottom end of the plunger. See the Testing and Adjusting section in this Service Manual for the correct specifications and procedure to check the plungers and lifters.Fuel pumps which are
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