TANK GP-HYDRAULIC 1220051 - Caterpillar

Illustration 2 g00845207
(1 through 12) Cylinder numbers
(A) Inlet valves
(B) Exhaust valves
(C) Flywheel
Table 2
G3512 Engine Specifications
Rated rpm 1000 to 1800
Cylinders and arrangement 60 degree Vee 12
Bore 170 mm (6.7 inch)
Stroke 190 mm (7.5 inch)
Displacement 51.8 L (3158 cubic inch)
Compression ratio 7.5:1
8:1
11:1
12.5:1
Aspiration Naturally aspirated
Turbocharged aftercooled
Separate circuit aftercooling
Rotation (flywheel end) Counterclockwise rotation is standard.
Clockwise rotation is optional.
Inlet valve lash 0.51 mm (0.020 inch)
Exhaust valve lash 1.27 mm (0.050 inch)
Illustration 3 g00845212
(1 through 16) Cylinder numbers
(A) Inlet valves
(B) Exhaust valves
(C) Flywheel
Table 3
G3516 Engine Specifications
Rated rpm 1000 to 1800
Cylinders and arrangement 60 degree Vee 16
Bore 170 mm (6.7 inch)
Stroke 190 mm (7.5 inch)
Displacement 69 L (4210 cubic inch)
Compression ratio 7.5:1
8:1
11:1
12.5:1
Aspiration Naturally aspirated
Turbocharged aftercooled
Separate circuit aftercooling
Rotation (flywheel end) Counterclockwise rotation is standard.
Clockwise rotation is optional.
Inlet valve lash 0.51 mm (0.020 inch)
Exhaust valve lash 1.27 mm (0.050 inch) Crankshaft Positions for Valve Lash Setting
Table 4
Crankshaft Positions For Valve Lash Setting
Standard Counterclockwise Rotation
Engine Stroke For The Number 1 Piston At Top Center Position(1) Inlet Valves Exhaust Valves
G3508 Compression Stroke 1-2-6-8 1-2-3-7
Exhaust Stroke 3-4-5-7 4-5-6-8
Firing Order 1-2-7-3-4-5-6-8
G3512 Compression Stroke 1-3-6-7-10-12 1-4-5-6-9-12
Exhaust Stroke 2-4-5-8-9-11 2-3-7-8-10-11
Firing Order 1-12-9-4-5-8-11-2-3-10-7-6
G3516 Compression Stroke 1-2-5-7-8-12-13-14 1-2-3-4-5-6-8-9
Exhaust Stroke 3-4-6-9-10-11-15-16 7-10-11-12-13-14-15-16
Firing Order 1-2-5-6-3-4-9-10-15-16-11-12-13-14-7-8
Crankshaft Positions For Valve Lash Setting
Optional Clockwise Rotation
G3508 Compression Stroke 1-3-4-8 1-2-7-8
Exhaust Stroke 2-5-6-7 3-4-5-6
Firing Order 1-8-7-2-6-5-4-3
G3512 Compression Stroke 1-3-4-6-7-12 1-4-5-8-9-12
Exhaust Stroke 2-5-8-9-10-11 2-3-6-7-10-11
Firing Order 1-4-9-8-5-2-11-10-3-6-7-12
G3516 Compression Stroke 1-2-5-6-7-8-13-14 1-2-3-4-5-6-9-10
Exhaust Stroke 3-4-9-10-11-12-15-16 7-8-11-12-13-14-15-16
Firing Order 1-6-5-4-3-10-9-16-15-12-11-14-13-8-7-2
(1) For the complete procedure, refer to the Service Manual, "Systems Operations Testing and Adjusting".