0437937 JOHNSON DIAPHRAGM ASSY.

Illustration 1 g00877835Note: The Bosch fuel injection pump is not a serviceable part. Replace the Bosch fuel injection pump as a complete unit.Note: Do not release the hub nut (not shown) 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 low idle adjustment screw to the following torque. ... 4 to 4.5 N m (35 to 40 lb in) (2) Tighten the fitting for the fuel return line connection to the following torque. ... 5 to 6 N m (44 to 53 lb in) (3) Tighten the fitting for the fuel supply connection to the following torque. ... 22 N m (16 lb ft) (4) Tighten the high idle speed adjustment screw to the following torque. ... 4 to 4.5 N m (35 to 40 lb in) (5) Electrical connection for the stop solenoid (6) Tighten the nuts for the high pressure fuel line connection to the following torque. ... 22 N m (16 lb ft) (7) Tighten the flange nuts to the following torque. ... 28 N m (21 lb ft) (8) Tighten the fittings for the discharge lines on the fuel injection pump to the following torque. ... 70.5 to 81.4 N m (52 to 60 lb ft)
Illustration 2 g00639035
Positions of the locking spacer
(9) Locking spacer 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. ... 10 N m (7 lb ft)
Illustration 3 g00639086
Positions of the locking spacer
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 2. This position ensures that the pump drive shaft is released.Delphi DP200 Fuel Injection Pump
Illustration 4 g00877838 (1) O-ring (2) 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. (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. ... 10 N m (7 lb ft)The locking screw prevents the rotation of the drive shaft.
Illustration 5 g00292837
Positions of the locking spacer
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 5. This position ensures that the pump drive shaft is released. (5) Tighten the fitting for the fuel return line connection to the following torque. ... 5 to 6 N m (44 to 53 lb in) (6) Tighten the low idle adjustment screw to the following torque. ... 4 to 4.5 N m (35 to 40 lb in) (7) Tighten the high idle speed adjustment screw to the following torque. ... 4 to 4.5 N m (35 to 40 lb in) (8) Electrical connection for the stop solenoid (9) Tighten the fitting for the fuel supply connection to the following torque. ... 22 N m (16 lb ft) (10) Tighten the flange nuts to the following torque. ... 28 N m (21 lb ft) (11) Tighten the nuts for the high pressure fuel injection lines to the following torque. ... 22 N m (16 lb ft) (12) Adjustment screw for timing advance (13) Tighten the fittings for the discharge lines from the fuel injection pump to the following torque. ... 70.5 to 81.4 N m (52 to 60 lb ft)Stanadyne Fuel Injection Pump
Illustration 6 g00877839Note: The Stanadyne fuel injection pump is not a serviceable part. Replace the Stanadyne fuel injection pump as a complete unit.Note: Do not release the hub nut (not shown) 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 stop solenoid (2) Tighten the fitting for the fuel return line connection to the following torque. ... 5 to 6 N m (44 to 53 lb in) (3) Tighten the low idle adjustment screw to the following torque. ... 4 to 4.5 N m (35 to 40 lb in) (4) Tighten the high idle speed adjustment screw to the following torque. ... 4 to 4.5 N m (35 to 40 lb in) (5) Tighten the flange nuts to the following torque. ... 28 N m (21 lb ft) (6) Adjustment screw for advance timing (7) Tighten the fittings for the fuel discharge to the following torque. ... 70.5 to 81.4 N m (52 to 60 lb ft) (8) Tighten the nuts for the high pressure fuel injection line to the following torque. ... 22 N m (16 lb ft) (9) Tighten the nut for the end cap to the following torque. ... 22 N m (16 lb ft)
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.