C7 Industrial Engines Specifications – Unit Injector Hydraulic Pump


Illustration 1 g01411601
Note: The bolts need to be replaced when the fuel transfer pump group (5) is replaced.

(1) Torque for four bolts … 33 ± 5 N·m (24 ± 4 lb ft)

(2) Torque for three bolts … 9.0 ± 0.4 N·m (80 ± 4 lb in)

(3) Torque for the fitting for the fuel inlet port … 23 ± 2 N·m (17 ± 1 lb ft)

(4) Torque for the fitting for the fuel outlet port … 23 ± 2 N·m (17 ± 1 lb ft)


Illustration 2 g01651495
(A) Installation depth for the needle bearing assembly in the barrel … 28.9 ± 0.2 mm (1.14 ± 0.01 inch)

(6) Torque for the retainer nut … 5.5 ± 0.5 N·m (50 ± 4 lb in)

(7) Torque for the nut … 8 ± 1 N·m (70 ± 9 lb in)

Note: Install needle bearing assembly (8) so that the end of the bearing with the identification number is oriented, as shown. Refer to Illustration 2.


Illustration 3 g01652053
Note: Install the spool (9) until the spool is fully seated against the shoulder of the block.

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