Bosch Fuel Injection Pump (EPVE)
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| Illustration 1 | g00896561 |
Note: Parts that are inside of the fuel injection pump are only serviceable by an authorized Bosch dealer. Please consult your parts book for availability of parts on the outside of the pump that are not related to the settings of the fuel pump and for the possibility of remanufacturing options.
Hub nut (not shown)
Note: Do not release the hub nut from the fuel injection pump. The fuel pump hub is positioned to the pump shaft in order to ensure that the fuel pump is in the correct position for timing. If the hub is removed, the hub will need to be accurately positioned to the pump shaft. Accurate positioning requires the use of special equipment by a Caterpillar Dealer.
(1) Tighten the screw for the low idle speed adjustment to the following torque. ...
(2) Tighten the fitting for the fuel return line connection to the following torque. ...
(3) Tighten the fitting for the fuel supply connection to the following torque. ...
(4) Boost control (if equipped)
(5) Tighten the high idle speed adjustment screw to the following torque. ...
(6) Tighten the nuts for the high pressure fuel line connection to the following torque. ...
(7) Tighten the flange nuts to the following torque. ...
(8) Tighten the fittings for the fuel discharge lines to the following torque. ...
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| Illustration 2 | g00766439 |
(9) Locking spacer (If equipped)
Note: The drive shaft of the fuel injection pump must not be turned without the spacer in position under the locking screw (10).
(10) Tighten the locking screw to the following torque. ...
(11) Tighten the nut for the drive gear to the following torque. ...
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| Illustration 3 | g00639086 |
Note: Before the crankshaft is turned or the fuel injection pump is installed, move the locking spacer (9) under the locking screw (10). Refer to position (A) that is in Illustration 3. This position ensures that the pump drive shaft is released.
Timing Information for the Bosch Fuel Injection Pump
| Early Bosch Fuel Injection Pump Without Locking Screw | ||||
| Code Letters on Fuel Injection Pump | Engine Check Angle (degrees)(1) | Fuel Injection Pump Mark Angle (degrees)(1) | Static Timing Position Before TC Position (degrees) | Piston Displacement(1) |
| "BK" | 308 | 314 | 12 | |
| "CK" | 308 | 314 | 12 | |
| "DK" | 306 | 313 | 14 | |
| "EK" | 308.5 | 315.5 | 14 | |
| "EK"(2) | 306.5 | 315.5 | 18 | |
| "EM" | 288.5 | 295.5 | 14 | |
| "FM" | 289 | 295 | 12.5 | |
| "JM" | - | - | 6 | - |
| "JM"(3) | - | - | 2 | - |
| "JM"(4) | - | - | TDC | - |
| "KC"(5) | - | - | TDC | - |
| "KL"(5) | - | - | TDC | - |
| "ML"(5) | - | - | TDC | - |
| "PM" | - | - | 12 | - |
| "SK" | - | - | 9 | - |
| "TL"(5) | - | - | TDC | - |
| VM | - | - | 2 ATDC | - |
| (1) | The engine must be set at the TC position on the compression stroke for the number 1 piston. The fuel injection pump mark angle and the displacement of the piston can be checked when the plunger for the fuel injection pump is set at |
| (2) | The information plate on the fuel injection pump is stamped "J609". |
| (3) | "AD70229" and "AD702230" only |
| (4) | "AD80643" only |
| (5) | The cold start advance (KSB) must be energized before the timing is set. |
Note: Later Bosch Fuel Injection Pumps use a pin to time the pump.
Stanadyne Fuel Injection Pump (DB2 or DB4)
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| Illustration 4 | g00788020 |
Note: Parts that are inside of the fuel injection pump are only serviceable by an authorized Stanadyne dealer. Please consult your parts book for availability of parts on the outside of the pump that are not related to the settings of the fuel pump and for the possibility of remanufacturing options.
Hub nut (not shown)
Note: Do not release the hub nut from the fuel injection pump. The fuel pump hub is positioned to the pump shaft in order to ensure that the fuel pump is in the correct position for timing. If the hub is removed, the hub will need to be accurately positioned to the pump shaft. Accurate positioning requires the use of special equipment by a Caterpillar Dealer.
(1) Electrical connection for the stop solenoid
(2) Tighten the fitting for the fuel return line connection to the following torque. ...
(3) Tighten the high idle speed adjustment screw to the following torque. ...
(4) Tighten the screw for the low idle speed adjustment to the following torque. ...
(5) Tighten the flange nuts to the following torque. ...
(6) Adjustment screw for advance timing
(7) Tighten the fittings for the fuel discharge to the following torque. ...
(8) Tighten the nuts for the high pressure fuel injection line to the following torque. ...
(9) Tighten the nut for the end cap to the following torque. ...
| NOTICE |
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The No. 1 cylinder must be at the top center position on the compression stroke before the fuel injection pump is installed. If the crankshaft needs to be rotated, the fuel injection pump must be mounted temporarily or the loose gear could cause damage to the front housing. |
Timing Information for the Stanadyne Fuel Injection Pump
| Stanadyne Fuel Injection Pump | ||
| Code Letters on Fuel Injection Pump | Engine Check Angle (degrees) | Fuel Injection Pump Mark Angle (degrees) |
| "AC" | 282 | 291 |
| "AL" | 326 | 336 |
| "BL" | 326 | 336 |
| "CL" | 327 | 333 |
| "CL"(1) | - | 247.5 |
| "DL" | 332 | 338 |
| "FL" | 326 | 333 |
| "GL" | 326 | 332 |
| "HC" | 282 | 290.5 |
| "JL" | 325 | 334.5 |
| "KM" | 282 | 290 |
| "LM" | 282 | 287 |
| "LM"(2) | 288.5 | 295 |
| "MM" | 282 | 287 |
| "MM"(3) | 288.5 | 295 |
| "NC" | 282 | 294 |
| "SL" | 331.5 | 338 |
| "SM" | 282 | 291 |
| "TC" | 282 | 290 |
| "TM" | 282 | 290.5 |
| "UC" | 228.5 | 296 |
| "VL" | 326 | 389 |
| "XK" | 325 | 331.5 |
| "YK" | 325 | 334.5 |
| "YL" | 330 | 338 |
| "ZK" | 326 | 334 |
| "ZM"(4) | 282 | 287 |
| "ZM"(5) | 282 | 289 |
| (1) | The fuel injection pump is timed with a pin. |
| (2) | The fuel injection pump is coded "2643U211" or "2643U213". |
| (3) | The fuel injection pump is coded "2643U214". |
| (4) | The values are for the fuel injection pumps with a serial number up to "7665964". |
| (5) | The values are for the fuel injection pump with a serial number that includes "7665965". The values are also for the fuel injection pumps with serial numbers that are higher than "7665965". |
Delphi Fuel Injection Pump (DPA or DPS)
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| Illustration 5 | g00788005 |
Note: Parts that are inside of the fuel injection pump are only serviceable by an authorized Delphi dealer. Please consult your parts book for availability of parts on the outside of the pump that are not related to the settings of the fuel pump and for the possibility of remanufacturing options.
(1) Hub nut
Note: Do not release the hub nut from the fuel injection pump. The fuel pump hub is positioned to the pump shaft in order to ensure that the fuel pump is in the correct position for timing. If the hub is removed, the hub will need to be accurately positioned to the pump shaft. Accurate positioning requires the use of special equipment by a Caterpillar Dealer.
(2) O-ring
(3) Locking spacer
The drive shaft of the fuel injection pump must not be turned without the spacer in position under the locking screw (4).
(4) Tighten the locking screw to the following torque. ...
The locking screw prevents the rotation of the drive shaft.
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| Illustration 6 | g00292837 |
Before the crankshaft is turned or the fuel injection pump is installed, move the locking spacer (3) under the locking screw (4). Refer to position (A) that is in Illustration 6. This position ensures that the pump drive shaft is released.
(5) Tighten the fitting for the fuel return line connection to the following torque. ...
(6) Tighten the adjustment screw for low idle to the following torque. ...
(7) Tighten the adjustment screw for high idle to the following torque. ...
(8) Electrical connection for the stop solenoid
(9) Tighten the fitting for the fuel supply connection to the following torque. ...
(10) Tighten the nuts for the fuel line to the following torque. ...
(11) Tighten the flange nuts to the following torque. ...
(12) Electrical connection for cold starting aid
(13) Tighten the fittings for the fuel discharge lines to the following torque. ...
Timing Information for the Delphi Fuel Injection Pump
| Delphi Fuel Injection Pump | ||
| Code that is on the Fuel Injection Pump | Engine Check Angle (degrees) | Fuel Injection Pump Mark Angle (degrees) |
| "AK" | 325.5 | 336 |
| "AM" | 282 | 290.5 |
| "BF" | 326 | 334 |
| "BM" | 281 | 291 |
| "CM" | 282.5 | 291.5 |
| "DM" | 282.25 | 290.5 |
| "FK" | 325.5 | 336 |
| "GK" | 325 | 336 |
| "GM" | 282 | 290.5 |
| "HK" | 326 | 336 |
| "HM" | 282 | 291 |
| "JK" | 325 | 334 |
| "KK" | 325 | 334 |
| "LK" | 327 | 337.5 |
| "LK"(1) | 328 | 337.5 |
| "MK" | 326 | 336 |
| "MK"(2) | 325 | 336 |
| "PK" | 326 | 334 |
| "RK" | 328 | 336 |
| "RM" | 282.5 | 290.5 |
| "TK" | 327 | 334 |
| "UK" | 326 | 334 |
| "XM" | 282 | 291 |
| (1) | "YA31257" only |
| (2) | "YA50532" only |
| Dephi Fuel Injection Pump With Locking Screw | |
| Code Letters on Fuel Injection Pump | Locking Angle (degrees) |
| "BC" | 336.5 |
| "CC" | 338.5 |
| "DC" | 337.5 |
| "EC" | 337.5 |
| "FC" | 335.5 |
| "GC" | 337 |
| "PC" | 339 |
| "RC" | 339 |
| "SC" | 341 |
| "XL" | 22 |
Note: Later Delphi Fuel Injection Pumps are timed with a pin.