Buy 104741-6731 ZEXEL 9 460 610 543 BOSCH INJECTION-PUMP ASSEMBLY 9460610543 1047416731 8970203901

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Information injection-pump assembly

BOSCH 9 460 610 543 9460610543

ZEXEL 104741-6731 1047416731

ISUZU 8970203901 8970203901

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Isuzu Engine 4JB1 Compatible Fuel Injection Pump 104741-6731 8970203901 1047416731 Compatible with Bobcat Skid Steer Loader 843 853

$637.99

29 Mar 2025

CN: TUF Parts

Isuzu Engine 4JB1 Compatible Fuel Injection Pump 104741-6731 8970203901 1047416731 Compatible with Bobcat Skid Steer Loader 843 853
KoovDem Part Number：294000-2580 8-97435556-0 || Part Name: Fuel Injection Pump || Specially designed to work with Isuzu Diesel Engine 4JB1, this product offers superior performance and efficiency for your vehicle. Its seamless integration ensures reliable and durable operation, making it the perfect choice for upgrading or maintaining your engine. Trustworthy and dependable, it guarantees smooth operation and optimal functionality for your Isuzu Diesel Engine 4JB1. || The package includes a Fuel Injection Pump with the part number 294000-2580 8-97435556-0.

Zexel Isuzu Engine 4JB1 Bobcat 853 Fuel Injection Pump 104741-6731

$754.99

29 Mar 2025

CN: CAR REFINE

Zexel Isuzu Engine 4JB1 Bobcat 853 Fuel Injection Pump 104741-6731
Podafu Part Number： 104741-6731 || Engine Model: for Zexel Isuzu Engine 4JB1 Bobcat 853 || The Fuel Injection Pump functions exceptionally well due to our rigorous quality testing prior to shipping. It is designed for easy installation with a plug and play feature, allowing you to use it directly without any hassle. || Please thoroughly review the specifications to ensure your desired product. Our offerings consist of durable materials and exceptional craftsmanship, guaranteeing high quality. By utilizing the product correctly, you can significantly prolong its lifespan. || You can trust in our products and feel confident in making a purchase. We prioritize prompt delivery, ensuring that your ordered items will be delivered to you swiftly.

104741-6731 8-97020390-1 8970203901 VE4 Fuel Injection Pump for Isuzu 4JB1 Engine Bobcat 843 Skid Steer Loader

$649.90

29 Mar 2025

HK: HIRINTOL-shop

104741-6731 8-97020390-1 8970203901 VE4 Fuel Injection Pump for Isuzu 4JB1 Engine Bobcat 843 Skid Steer Loader
HIRINTOL 🔸Replace Part Number: 104741-6731, 1047416731, 8-97020390-1, 8970203901, 9460610543 || 🔸Compatible Model: for Isuzu 4JB1 Engine; for Bobcat 843 Skid Steer Loader || 🔸Efficient And Stable: Using advanced technology, it can provide efficient and stable fuel supply to ensure the normal operation of the vehicle. || 🔸Durable And Reliable: Tested and proven many times, it has a long life and reliable quality to keep working under extreme conditions. || 🔸Easy Installation: standard interface design, easy installation, plug and play, no professional skills required.

Components :

0.	INJECTION-PUMP ASSEMBLY	104741-6731
1.	_
2.	FUEL INJECTION PUMP	104641-6211
3.	NUMBER PLATE	146920-7300
4.	_
5.	CAPSULE	146620-0120
6.	ADJUSTING DEVICE
7.	NOZZLE AND HOLDER ASSY	105118-4224
8.	Nozzle and Holder	8-94407-879-3
9.	Open Pre:MPa(Kqf/cm2)	18.1{185}
10.	NOZZLE-HOLDER	105048-3230
11.	NOZZLE	105017-1550

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]	146220-0620	CAM PLATE
30.	[1]	146600-0800	O-RING
31.	[1]	146300-0300	PUMP PLUNGER
32.	[1]	146301-0000	SLIDING PIECE
33.	[1]	146603-0700	SHIM D17.5&7.5T0.60
34.	[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]	146234-0020	GUIDE PIN
50.	[1]	146402-0920	HYDRAULIC HEAD
50.	[1]	146402-0920	HYDRAULIC HEAD
50.	[1]	146402-0920	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]	146430-1420	DELIVERY-VALVE ASSEMBLY
56.	[4]	146432-0200	COMPRESSION SPRING
57.	[4]	146602-2300	FILLER PIECE
58.	[4]	146440-0600	FITTING
60.	[4]	139106-0100	FLAT-HEAD SCREW
67.	[1]	146500-6223	GOVERNOR COVER
67/1.	[1]	146505-3521	GOVERNOR COVER
67/2.	[1]	146515-0220	CONTROL SHAFT
67/3.	[1]	146600-0100	O-RING
67/4.	[1]	139310-0200	PLAIN WASHER
67/5.	[1]	146533-9801	CONTROL LEVER
67/5B.	[1]	146533-9901	CONTROL LEVER
67/6.	[1]	014110-6440	LOCKING WASHER
67/7.	[1]	013020-6040	UNION NUT M6P1H5
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]	146587-1100	COILED SPRING
67/23.	[1]	146626-6000	BRACKET
67/24.	[2]	139006-4800	BLEEDER SCREW
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]	146561-5220	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]	146602-0500	PLAIN WASHER D17&6.4T1.60
115.	[1]	146575-0600	SLIDING SLEEVE
116.	[1]	146576-0000	SEALING 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]	146579-0620	RETAINING PIN
122.	[1]	146580-2100	GOVERNOR SPRING
123.	[4]	139106-0200	FLAT-HEAD SCREW
130.	[1]	146421-0320	CAPSULE
130/2.	[1]	026508-1140	GASKET D11.4&8.2T1
130/3.	[1]	146422-0300	BLEEDER SCREW
130/4.	[1]	146600-0500	O-RING
133.	[1]	146600-0600	O-RING
134.	[1]	146600-0700	O-RING
135.	[1]	146110-1120	CONTROL VALVE
135/5.	[1]	146114-0000	SPRING WASHER
136.	[1]	146120-0120	OVER FLOW VALVE
137.	[2]	139512-0500	GASKET
138.	[1]	146605-1820	INLET UNION
160.	[1]	146625-8020	PLATE
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]	146125-0000	EYE BOLT
247.	[1]	146605-1920	INLET UNION
248.	[1]	146614-0200	SPACER BUSHING
260.	[1]	146611-0720	BRACKET
261.	[2]	146621-4700	UNION NUT
264.	[1]	016500-5010	O-RING
270.	[1]	146615-2821	TOOTHED GEAR
270/1.	[1]	146615-2100	TOOTHED GEAR
270/2.	[1]	146615-0201	COUPLING PLATE
270/3.	[6]	020006-1870	BLEEDER SCREW M6P1L18 7T
800S.	[1]	146009-8520	PUMP HOUSING
800S/1/6.	[1]	146601-0700	PACKING RING
804S.	[1]	146232-0320	COMPRESSION SPRING
805S.	[1]	146574-0120	PARTS SET
810S.	[1]	146600-1120	REPAIR 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]	146920-7300	NAMEPLATE

Include in #2:

104741-6731 as INJECTION-PUMP ASSEMBLY

Cross reference number

BOSCH 9 460 610 543 9460610543

ZEXEL 104741-6731 1047416731

ISUZU 8970203901 8970203901

Zexel num

Bosch num

Firm num

Name

104741-6731
104741-6732

9 460 610 543

8970203901 ISUZU

INJECTION-PUMP ASSEMBLY
4JB1PK * K 11CJ VE4 VE

Calibration Data:

Adjustment conditions

Test oil
1404 Test oil ISO4113orSAEJ967d

Test oil temperature degC 45 45 50

Nozzle 105000-2010

Bosch type code NP-DN12SD12TT

Nozzle holder 105780-2080

Opening pressure MPa 14.7 14.7 15.19

Opening pressure kgf/cm2 150 150 155

Injection pipe
Inside diameter - outside diameter - length (mm) mm 2-6-840

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

Injection timing adjustment

Pump speed r/min 800 800 800

Average injection quantity mm3/st. 48.1 47.6 48.6

Difference in delivery mm3/st. 3.5

Basic *

Injection timing adjustment_02

Pump speed r/min 1400 1400 1400

Average injection quantity mm3/st. 18.3 14.8 21.8

Injection timing adjustment_03

Pump speed r/min 1300 1300 1300

Average injection quantity mm3/st. 47.2 44.2 50.2

Injection timing adjustment_04

Pump speed r/min 800 800 800

Average injection quantity mm3/st. 48.1 47.1 49.1

Injection timing adjustment_05

Pump speed r/min 500 500 500

Average injection quantity mm3/st. 52.5 48.5 56.5

Injection quantity adjustment

Pump speed r/min 1400 1400 1400

Average injection quantity mm3/st. 18.3 15.3 21.3

Difference in delivery mm3/st. 4.5

Basic *

Injection quantity adjustment_02

Pump speed r/min 1500 1500 1500

Average injection quantity mm3/st. 5

Governor adjustment

Pump speed r/min 500 500 500

Average injection quantity mm3/st. 9.6 7.6 11.6

Difference in delivery mm3/st. 2

Basic *

Governor adjustment_02

Pump speed r/min 650 650 650

Average injection quantity mm3/st. 3

Governor adjustment_03

Pump speed r/min 500 500 500

Average injection quantity mm3/st. 9.6 7.6 11.6

Timer adjustment

Pump speed r/min 100 100 100

Average injection quantity mm3/st. 95 75 115

Basic *

Speed control lever angle

Pump speed r/min 500 500 500

Average injection quantity mm3/st. 0 0 0

Remarks
Magnet OFF

0000000901

Pump speed r/min 1000 1000 1000

Overflow quantity cm3/min 279 150 408

Stop lever angle

Pump speed r/min 1000 1000 1000

Pressure kPa 225.5 206 245

Pressure kgf/cm2 2.3 2.1 2.5

Basic *

Stop lever angle_02

Pump speed r/min 1000 1000 1000

Pressure kPa 225.5 206 245

Pressure kgf/cm2 2.3 2.1 2.5

Stop lever angle_03

Pump speed r/min 1400 1400 1400

Pressure kPa 284.5 255 314

Pressure kgf/cm2 2.9 2.6 3.2

0000001101

Pump speed r/min 1000 1000 1000

Timer stroke mm 0.7 0.5 0.9

Basic *

_02

Pump speed r/min 1000 1000 1000

Timer stroke mm 0.7 0.4 1

_03

Pump speed r/min 1400 1400 1400

Timer stroke mm 1.55 1.2 1.9

0000001201

Max. applied voltage V 8 8 8

Test voltage V 13 12 14

Timing setting

K dimension mm 2.8 2.7 2.9

KF dimension mm 5 4.9 5.1

MS dimension mm 1 0.9 1.1

Pre-stroke mm 0.45 0.43 0.47

Control lever angle alpha deg. 18 14 22

Control lever angle beta deg. 31 26 36

Information:

Caterpillar: Confidential Yellow
PSP FOR REPLACING UNIT INJECTOR RETURN SPRINGS ON CERTAIN D11N TRACTORS; 776B TRACTORS; 777B, 785, 789 TRUCKS; 3508, 3512, 351 6 ENGINES - PS4591 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA, MARINE TEPS
The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
May 30, 1991 U-110 A-78 AU-66 E-69 O-82 TM-9 PRODUCT SUPPORT PROGRAM FOR REPLACING UNIT INJECTOR RETURN SPRINGS ON CERTAIN D11N TRACTORS; 776B TRACTORS; 777B, 785, AND 789 TRUCKS; AND 3508, 3512, AND 3516 ENGINES. 1290 PS4591 This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4591" as Part Number, "7755" as Group Number, and "96" as Description Code. Although this Program is to be administered as described above on the Affected Product, parts stock should be reworked as soon as possible. Termination Date
May 31, 1992
Problem
The return springs for Type 2 unit injectors on certain D11N Tractors; 776B Tractors; 777B, 785, and 789 Trucks; and 3508, 3512, and 3516 Engines may fail in some applications. Type 2 injectors are described on