Information injection-pump assembly
BOSCH
9 460 610 832
9460610832
ZEXEL
104746-1400
1047461400
ISUZU
8970906330
8970906330

Rating:
Components :
0. | INJECTION-PUMP ASSEMBLY | 104746-1400 |
1. | _ | |
2. | FUEL INJECTION PUMP | 104646-1400 |
3. | NUMBER PLATE | 146924-1600 |
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] | 146210-0120 | 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] | 146301-0200 | SLIDING PIECE |
33. | [1] | 146603-0700 | SHIM |
34. | [1] | 146302-4100 | COMPRESSION SPRING |
34B. | [1] | 146302-4000 | COMPRESSION SPRING |
35/1. | [0] | 146603-0700 | SHIM |
35/1. | [0] | 146603-0800 | SHIM |
35/1. | [0] | 146603-0900 | SHIM |
35/1. | [0] | 146603-1000 | SHIM |
35/1. | [0] | 146603-1100 | SHIM |
35/1. | [0] | 146603-3600 | SHIM |
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. | [2] | 146603-0000 | SHIM |
48/1. | [2] | 146603-0100 | SHIM |
48/1. | [2] | 146603-0200 | SHIM |
48/1. | [2] | 146603-0300 | SHIM |
48/1. | [2] | 146603-0400 | SHIM |
48/1. | [2] | 146603-0500 | SHIM |
48/1. | [2] | 146603-0600 | SHIM |
48/1. | [2] | 146690-1400 | SHIM |
48/1. | [2] | 146690-1500 | SHIM |
48/1. | [2] | 146690-1600 | SHIM |
48/1. | [2] | 146690-1700 | SHIM |
48/1. | [2] | 146690-1800 | SHIM |
48/1. | [2] | 146690-1900 | SHIM |
48/1. | [2] | 146690-5800 | SHIM |
48/1. | [2] | 146690-5900 | SHIM |
48/1. | [2] | 146690-6000 | SHIM |
48/1. | [2] | 146690-6100 | SHIM |
48/1. | [2] | 146690-6200 | SHIM |
48/1. | [2] | 146690-6300 | SHIM |
48/1. | [2] | 146690-6400 | SHIM |
48/1. | [2] | 146690-6500 | SHIM |
48/1. | [2] | 146690-6600 | SHIM |
48/1. | [2] | 146690-6700 | SHIM |
48/1. | [2] | 146690-6800 | SHIM |
48/1. | [2] | 146690-6900 | SHIM |
48/1. | [2] | 146690-7000 | SHIM |
48/1. | [2] | 146690-7100 | SHIM |
48/1. | [2] | 146690-7200 | SHIM |
48/1. | [2] | 146690-7300 | SHIM |
48/1. | [2] | 146690-7400 | SHIM |
48/1. | [2] | 146690-7500 | SHIM |
48/1. | [2] | 146690-7800 | SHIM |
49. | [2] | 146234-0020 | 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 |
52/1. | [1] | 146420-0100 | SHIM |
52/1. | [1] | 146420-0200 | SHIM |
52/1. | [1] | 146420-0300 | SHIM |
52/1. | [1] | 146420-0400 | SHIM |
52/1. | [1] | 146420-0500 | SHIM |
52/1. | [1] | 146420-0600 | SHIM |
52/1. | [1] | 146420-0700 | SHIM |
52/1. | [1] | 146420-0800 | SHIM |
52/1. | [1] | 146420-0900 | SHIM |
52/1. | [1] | 146420-1000 | SHIM |
52/1. | [1] | 146420-1100 | SHIM |
52/1. | [1] | 146420-1200 | SHIM |
52/1. | [1] | 146420-1300 | SHIM |
52/1. | [1] | 146420-1400 | SHIM |
52/1. | [1] | 146420-1500 | SHIM |
52/1. | [1] | 146420-1600 | SHIM |
52/1. | [1] | 146420-1700 | SHIM |
52/1. | [1] | 146420-1800 | SHIM |
52/1. | [1] | 146420-1900 | SHIM |
52/1. | [1] | 146420-2000 | SHIM |
52/1. | [1] | 146420-2100 | SHIM |
52/1. | [1] | 146420-2200 | SHIM |
52/1. | [1] | 146420-2300 | SHIM |
52/1. | [1] | 146420-2400 | SHIM |
52/1. | [1] | 146420-2500 | SHIM |
52/1. | [1] | 146420-2600 | SHIM |
52/1. | [1] | 146420-2700 | SHIM |
52/1. | [1] | 146420-2800 | SHIM |
52/1. | [1] | 146420-2900 | SHIM |
52/1. | [1] | 146420-3000 | SHIM |
52/1. | [1] | 146420-3100 | SHIM |
52/1. | [1] | 146420-3200 | SHIM |
52/1. | [1] | 146420-3300 | SHIM |
52/1. | [1] | 146420-3400 | SHIM |
52/1. | [1] | 146420-3500 | SHIM |
52/1. | [1] | 146420-3600 | SHIM |
52/1. | [1] | 146420-3700 | SHIM |
52/1. | [1] | 146420-3800 | SHIM |
52/1. | [1] | 146420-3900 | SHIM |
52/1. | [1] | 146420-4000 | SHIM |
52/1. | [1] | 146420-4100 | SHIM |
52/1. | [1] | 146420-4200 | SHIM |
52/1. | [1] | 146420-4300 | SHIM |
52/1. | [1] | 146420-4400 | SHIM |
52/1. | [1] | 146420-4500 | SHIM |
52/1. | [1] | 146420-4600 | SHIM |
52/1. | [1] | 146420-4700 | SHIM |
52/1. | [1] | 146420-4800 | SHIM |
52/1. | [1] | 146420-4900 | SHIM |
52/1. | [1] | 146420-5000 | SHIM |
52/1. | [1] | 146420-5100 | SHIM |
52/1. | [1] | 146420-5200 | SHIM |
52/1. | [1] | 146420-5300 | SHIM |
52/1. | [1] | 146420-5400 | SHIM |
52/1. | [1] | 146420-5500 | SHIM |
52/1. | [1] | 146420-5600 | SHIM |
52/1. | [1] | 146420-5700 | SHIM |
52/1. | [1] | 146420-5800 | SHIM |
54. | [4] | 146433-0100 | GASKET |
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 |
67/6. | [2] | 014110-6440 | LOCKING WASHER |
67/6. | [2] | 014110-6440 | LOCKING WASHER |
67/7. | [1] | 013020-6040 | UNION NUT |
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 |
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 |
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 |
67/201B. | [1] | 146545-3500 | THREADED PIN |
67/201C. | [1] | 146545-3600 | THREADED PIN |
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 |
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 |
110/1. | [1] | 146571-0100 | SHIM |
110/1. | [1] | 146571-0200 | SHIM |
110/1. | [1] | 146571-0300 | SHIM |
110/1. | [1] | 146571-0400 | SHIM |
110/1. | [1] | 146571-0500 | SHIM |
110/1. | [1] | 146571-0600 | SHIM |
110/1. | [1] | 146571-0700 | SHIM |
110/1. | [1] | 146571-0800 | SHIM |
111. | [1] | 146602-0600 | PLAIN WASHER |
112. | [1] | 146572-0020 | FLYWEIGHT ASSEMBLY |
114. | [1] | 146602-2600 | PLAIN WASHER |
115. | [1] | 146575-2000 | SLIDING SLEEVE |
116. | [1] | 146576-0200 | CAP |
117/1. | [1] | 146577-1800 | PLUG |
117/1. | [1] | 146577-1900 | PLUG |
117/1. | [1] | 146577-2000 | PLUG |
117/1. | [1] | 146577-2100 | PLUG |
117/1. | [1] | 146577-2200 | PLUG |
117/1. | [1] | 146577-2300 | PLUG |
117/1. | [1] | 146577-2400 | PLUG |
117/1. | [1] | 146577-2500 | PLUG |
117/1. | [1] | 146577-2600 | PLUG |
117/1. | [1] | 146577-2700 | PLUG |
117/1. | [1] | 146577-2800 | PLUG |
117/1. | [1] | 146577-2900 | PLUG |
117/1. | [1] | 146577-3000 | PLUG |
117/1. | [1] | 146577-3100 | PLUG |
117/1. | [1] | 146577-3200 | PLUG |
117/1. | [1] | 146577-3300 | PLUG |
117/1. | [1] | 146577-6700 | PLUG |
117/1. | [1] | 146577-6800 | PLUG |
117/1. | [1] | 146577-6900 | PLUG |
117/1. | [1] | 146577-7000 | PLUG |
117/1. | [1] | 146577-7100 | PLUG |
117/1. | [1] | 146577-7200 | PLUG |
117/1. | [1] | 146577-7300 | PLUG |
117/1. | [1] | 146577-7400 | PLUG |
117/1. | [1] | 146577-7500 | PLUG |
117/1. | [1] | 146577-7600 | PLUG |
117/1. | [1] | 146577-7700 | PLUG |
117/1. | [1] | 146577-7800 | PLUG |
117/1. | [1] | 146577-7900 | PLUG |
117/1. | [1] | 146577-8000 | PLUG |
117/1. | [1] | 146577-8100 | PLUG |
117/1. | [1] | 146877-0000 | PLUG |
117/1. | [1] | 146877-0100 | PLUG |
117/1. | [1] | 146877-0200 | PLUG |
117/1. | [1] | 146877-0300 | PLUG |
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 |
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] | 146120-1920 | OVER FLOW VALVE |
137. | [2] | 139512-0500 | GASKET |
138. | [1] | 146607-7520 | INLET UNION |
200. | [1] | 146206-0300 | COILED SPRING |
205. | [1] | 025804-1610 | WOODRUFF KEY |
206. | [1] | 013121-4140 | UNION NUT |
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] | 146621-0900 | 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 |
800S. | [1] | 146009-9420 | PUMP HOUSING |
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 |
835S. | [1] | 146598-1000 | CAP |
836S/1. | [1] | 146598-0600 | CAP |
836S/1. | [1] | 146598-0700 | CAP |
836S/1. | [1] | 146598-0800 | CAP |
836S/1. | [1] | 146598-0900 | CAP |
903. | [1] | 146620-0120 | CAPSULE |
903/2. | [1] | 146600-1300 | O-RING |
906. | [1] | 146924-1600 | NAMEPLATE |
Include in #2:
104746-1400
as INJECTION-PUMP ASSEMBLY
Cross reference number
BOSCH
9 460 610 832
9460610832
ZEXEL
104746-1400
1047461400
ISUZU
8970906330
8970906330
Zexel num
Bosch num
Firm num
Name
Calibration Data:
Adjustment conditions
Test oil
1404 Test oil ISO4113orSAEJ967d
1404 Test oil ISO4113orSAEJ967d
Test oil temperature
degC
45
45
50
Nozzle
105780-0060
Bosch type code
NP-DN0SD1510
Nozzle holder
105780-2150
Opening pressure
MPa
13
13
13.3
Opening pressure
kgf/cm2
133
133
136
Injection pipe
157805-7320
Injection pipe
Inside diameter - outside diameter - length (mm) mm 2-6-450
Inside diameter - outside diameter - length (mm) mm 2-6-450
Joint assembly
157641-4720
Tube assembly
157641-4020
Transfer pump pressure
kPa
20
20
20
Transfer pump pressure
kgf/cm2
0.2
0.2
0.2
Direction of rotation (viewed from drive side)
Left L
Left L
Injection timing adjustment
Pump speed
r/min
900
900
900
Average injection quantity
mm3/st.
58.1
57.6
58.6
Difference in delivery
mm3/st.
3.5
Basic
*
Oil temperature
degC
50
48
52
Injection timing adjustment_02
Pump speed
r/min
1320
1320
1320
Average injection quantity
mm3/st.
16.5
13
20
Oil temperature
degC
50
48
52
Injection timing adjustment_03
Pump speed
r/min
1200
1200
1200
Average injection quantity
mm3/st.
58.5
53
64
Oil temperature
degC
50
48
52
Injection timing adjustment_04
Pump speed
r/min
1000
1000
1000
Average injection quantity
mm3/st.
58.5
53.5
63.5
Oil temperature
degC
50
48
52
Injection timing adjustment_05
Pump speed
r/min
900
900
900
Average injection quantity
mm3/st.
58.1
57.1
59.1
Oil temperature
degC
50
48
52
Injection timing adjustment_06
Pump speed
r/min
600
600
600
Average injection quantity
mm3/st.
60.4
55.4
65.4
Oil temperature
degC
50
48
52
Injection timing adjustment_07
Pump speed
r/min
500
500
500
Average injection quantity
mm3/st.
58.1
53.1
63.1
Oil temperature
degC
50
48
52
Injection quantity adjustment
Pump speed
r/min
1320
1320
1320
Average injection quantity
mm3/st.
16.5
13.5
19.5
Difference in delivery
mm3/st.
5.5
Basic
*
Oil temperature
degC
50
48
52
Injection quantity adjustment_02
Pump speed
r/min
1400
1400
1400
Average injection quantity
mm3/st.
5
Oil temperature
degC
50
48
52
Governor adjustment
Pump speed
r/min
350
350
350
Average injection quantity
mm3/st.
21.8
19.8
23.8
Difference in delivery
mm3/st.
4.5
Basic
*
Oil temperature
degC
48
46
50
Governor adjustment_02
Pump speed
r/min
450
450
450
Average injection quantity
mm3/st.
5
Oil temperature
degC
48
46
50
Governor adjustment_03
Pump speed
r/min
375
375
375
Average injection quantity
mm3/st.
10.3
10.3
10.3
Oil temperature
degC
48
46
50
Governor adjustment_04
Pump speed
r/min
350
350
350
Average injection quantity
mm3/st.
21.8
19.3
24.3
Oil temperature
degC
48
46
50
Timer adjustment
Pump speed
r/min
100
100
100
Average injection quantity
mm3/st.
68
65
71
Basic
*
Oil temperature
degC
48
46
50
Remarks
Full
Full
Speed control lever angle
Pump speed
r/min
350
350
350
Average injection quantity
mm3/st.
0
0
0
Oil temperature
degC
48
46
50
Remarks
Magnet OFF
Magnet OFF
0000000901
Pump speed
r/min
900
900
900
Overflow quantity
cm3/min
360
210
510
Oil temperature
degC
48
46
50
Stop lever angle
Pump speed
r/min
900
900
900
Pressure
kPa
392
372
412
Pressure
kgf/cm2
4
3.8
4.2
Basic
*
Oil temperature
degC
50
48
52
Stop lever angle_02
Pump speed
r/min
900
900
900
Pressure
kPa
392
372
412
Pressure
kgf/cm2
4
3.8
4.2
Oil temperature
degC
50
48
52
Stop lever angle_03
Pump speed
r/min
1300
1300
1300
Pressure
kPa
481
452
510
Pressure
kgf/cm2
4.9
4.6
5.2
Oil temperature
degC
50
48
52
0000001101
Pump speed
r/min
900
900
900
Timer stroke
mm
0.6
0.4
0.8
Basic
*
Oil temperature
degC
50
48
52
_02
Pump speed
r/min
800
800
800
Timer stroke
mm
0.4
Oil temperature
degC
50
48
52
_03
Pump speed
r/min
900
900
900
Timer stroke
mm
0.6
0.3
0.9
Oil temperature
degC
50
48
52
_04
Pump speed
r/min
1300
1300
1300
Timer stroke
mm
1.15
0.7
1.6
Oil temperature
degC
50
48
52
_05
Pump speed
r/min
1325
1325
1325
Timer stroke
mm
1.2
0.8
1.6
Oil temperature
degC
50
48
52
0000001201
Max. applied voltage
V
8
8
8
Test voltage
V
13
12
14
Timing setting
K dimension
mm
3.3
3.2
3.4
KF dimension
mm
5.8
5.7
5.9
MS dimension
mm
2
1.9
2.1
Pre-stroke
mm
0.1
0.08
0.12
Control lever angle alpha
deg.
16
12
20
Control lever angle beta
deg.
35
30
40
Test data Ex:
0000001801 STARTING I/Q ADJUSTMENT

Starting injection quantity adjustment
Adjust the adjusting bolt A so that the starting injection quantity adjustment is within the standards.
Fix using nut (B).
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L=7.4~11.1mm T=6~9N-m(0.6~0.9kgf-m)
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L=7.4~11.1mm T=6~9N-m(0.6~0.9kgf-m)
Information:
Possible Causes/Corrections
Air or Water in Fuel System/With air in the fuel system, the engine will normally be difficult to start, run rough and release a large amount of white smoke. If the engine will not start, loosen a fuel injection line nut and crank the engine until fuel comes out. Tighten the fuel line nut. Start the engine. If the engine does not run smooth or releases a large amount of white smoke, loosen the fuel line nuts one at a time until the fuel that comes out is free of air. Tighten the fuel lines nuts. If the air can not be removed in this way, put 35 kPa (5 psi) of air pressure to the fuel tank.
Do not use more than 55 kPa (8 psi) of air pressure in the fuel tank or damage to the tank may result.
Check for leaks at the connections between the fuel tank and the fuel transfer pump. If leaks are found, tighten the connections or replace the lines. If there are no visual leaks, remove the fuel supply line from the tank and connect it to an outside fuel supply. If this corrects the problem, the suction line (standpipe) inside the fuel tank has a leak.Water in the fuel can cause rough running and possible fuel system damage. Valve Adjustment Not Correct/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.). Also check for a bent or broken push rod. Bad Fuel Nozzle(s)/Find a bad nozzle by running engine at the rpm where it runs rough. Loosen the fuel line nut enough to stop fuel supply to that cylinder. Each cylinder must be checked this way. If a cylinder is found where loosening of the nut makes no difference in the rough running, test the nozzle for that cylinder. To test a nozzle, remove the nozzle from the engine and test as in Testing and Adjusting section of this Service Manual. Fuel Leakage From Fuel Injection Line Nut/Tighten nut to 40 7 N m (30 5 lb. ft.). Again check for leakage. 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 severely scored from debris can cause rough running, but fuel dilution usually occurs before horsepower is affected.Low installation torque on the fuel pump retaining nut can cause misfire, rough running and low power. Fuel Has a High "Cloud Point"/In cold weather operation this condition should be checked first. The fuel "cloud point" is the temperature at which wax begins to form in the fuel. If the atmospheric temperature is lower than the "cloud point"
Air or Water in Fuel System/With air in the fuel system, the engine will normally be difficult to start, run rough and release a large amount of white smoke. If the engine will not start, loosen a fuel injection line nut and crank the engine until fuel comes out. Tighten the fuel line nut. Start the engine. If the engine does not run smooth or releases a large amount of white smoke, loosen the fuel line nuts one at a time until the fuel that comes out is free of air. Tighten the fuel lines nuts. If the air can not be removed in this way, put 35 kPa (5 psi) of air pressure to the fuel tank.
Do not use more than 55 kPa (8 psi) of air pressure in the fuel tank or damage to the tank may result.
Check for leaks at the connections between the fuel tank and the fuel transfer pump. If leaks are found, tighten the connections or replace the lines. If there are no visual leaks, remove the fuel supply line from the tank and connect it to an outside fuel supply. If this corrects the problem, the suction line (standpipe) inside the fuel tank has a leak.Water in the fuel can cause rough running and possible fuel system damage. Valve Adjustment Not Correct/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.). Also check for a bent or broken push rod. Bad Fuel Nozzle(s)/Find a bad nozzle by running engine at the rpm where it runs rough. Loosen the fuel line nut enough to stop fuel supply to that cylinder. Each cylinder must be checked this way. If a cylinder is found where loosening of the nut makes no difference in the rough running, test the nozzle for that cylinder. To test a nozzle, remove the nozzle from the engine and test as in Testing and Adjusting section of this Service Manual. Fuel Leakage From Fuel Injection Line Nut/Tighten nut to 40 7 N m (30 5 lb. ft.). Again check for leakage. 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 severely scored from debris can cause rough running, but fuel dilution usually occurs before horsepower is affected.Low installation torque on the fuel pump retaining nut can cause misfire, rough running and low power. Fuel Has a High "Cloud Point"/In cold weather operation this condition should be checked first. The fuel "cloud point" is the temperature at which wax begins to form in the fuel. If the atmospheric temperature is lower than the "cloud point"