C7 Marine Engine Caterpillar


Valve Mechanism

Usage:

C7 C7B



Illustration 1g01383417

(1) Valve rocker arm assembly

Bore in the rocker arm for the shaft ... 21.548 ± 0.013 mm (0.8483 ± 0.0005 inch)
Diameter of the rocker arm shaft ... 21.500 ± 0.013 mm (0.8465 ± 0.0005 inch)

(2) Tighten the locknut to the following torque. ... 30 ± 7 N·m (22 ± 5 lb ft)

(A) Valve lash

Inlet valves ... 0.38 ± 0.08 mm (0.0150 ± 0.0031 inch)
Exhaust valves ... 0.64 ± 0.08 mm (0.0252 ± 0.0031 inch)

(3) Lifter assembly

Bore in the lifter arm for the shaft ( new) ... 15.670 ± 0.013 mm (0.6169 ± 0.0005 inch)
Diameter of shaft ( new) ... 15.620 ± 0.018 mm (0.6150 ± 0.0007 inch)



Illustration 2g01383430

View A-A

(4) The lifter group must be installed with the oil holes in the shaft, as shown.

(5) Apply 9S-3263 Thread Lock Compound . Tighten the bolts that are shown above in a numerical sequence to the following torque. ... 13 ± 3 N·m (10 ± 2 lb ft)

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