G3612 and G3616 Engines Caterpillar

Illustration 1	g01000147

(1) Locknut

Torque ... 200 ± 25 N·m (150 ± 20 lb ft)

(2) Rocker arm shaft

Diameter ... 69.900 ± 0.015 mm (2.7520 ± 0.0006 inch)

Bore in bearings ... 70.000 ± 0.015 mm (2.7559 ± 0.0006 inch)

(3) Valve lash

Inlet valve ... 0.50 mm (0.020 inch)

Exhaust valve ... 1.27 mm (0.050 inch)

Gas admission valve ... 0.64 mm (0.025 inch)

(4) Locknut

Torque ... 100 ± 15 N·m (75 ± 10 lb ft)

(5) Bridge dowel

Diameter ... 19.055 ± 0.003 mm (0.7502 ± 0.0001 inch)

Bore in bridge ... 19.105 ± 0.020 mm (0.7522 ± 0.0008 inch)

Bore in plug for dowel ... 19.017 ± 0.020 mm (0.7487 ± 0.0008 inch)

Diameter of plug ... 27.050 ± 0.008 mm (1.0650 ± 0.0003 inch)

Bore in cylinder head for plug ... 27.000 ± 0.020 mm (1.0630 ± 0.0008 inch)

(6) Support assembly and gas admission valve

(7) Guide spring

Note: The guide springs must not be used again. Always install new guide springs.

Illustration 2	g01000146

(8) Lifter guide

(9) Lifter

Diameter ... 41.910 ± 0.010 mm (1.6500 ± 0.0004 inch)

Bore for lifter ... 42.000 ± 0.020 mm (1.6535 ± 0.0008 inch)

(10) Adapter

Diameter ... 56.070 ± 0.020 mm (2.2075 ± 0.0008 inch)

Bore for adapter ... 56.000 ± 0.020 mm (2.2047 ± 0.0008 inch)

(11) Lifter

Diameter ... 27.896 ± 0.013 mm (1.0983 ± 0.0005 inch)

Bore in the adapter ... 27.950 ± 0.020 mm (1.1004 ± 0.0008 inch)

Illustration 3	g00285522

(12) Bolts

Torque ... 430 ± 60 N·m (320 ± 40 lb ft)