3500B and 3500C Marine Engines Caterpillar

Camshaft

Usage:

3516B 9F2

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Illustration 1	g03317018

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Table 1
Specification for 381-1946 Camshaft Gp
Item	Qty	Part	Specification Description
A	-	-	Dimension of groove in a new camshaft for the thrust washer is 8.75 ± 0.05 mm (0.344 ± 0.002 inch).
C	2	4N-1650 Dowel	Extension of the dowel is 22.0 ± 0.5 mm (0.87 ± 0.02 inch).
D	2	5B-5821 Dowel	Extension of the dowel is 12.0 ± 0.5 mm (0.47 ± 0.02 inch).
E	2	7N-3218 Thrust Washer	Thickness of a new thrust washer is 8.50 ± 0.05 mm (0.335 ± 0.002 inch).
F	-	-	Diameter of bearing journal is 91.88 ± 0.02 mm (3.617 ± 0.001 inch).
1	16	5P-0076 Bolt	Torque to 55 ± 7 N·m (41 ± 5 lb ft).

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Illustration 2	g03317017

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Table 2
Specification for 381-1946 Camshaft Gp
Item	Qty	Part	Specification Description
-	-	-	Use the following procedure in order to determine the actual camshaft lobe lift: 1. Measure camshaft lobe height (H). 2. Measure base circle (J). 3. Subtract the base circle (J) from the camshaft lobe height (H). The difference is the actual camshaft lobe lift.
G	-	-	Specified camshaft lobe lift for Inlet lobe is 13.250 mm (0.5217 inch). Injector lobe is 13.731 mm (0.5406 inch). Exhaust lobe is 13.250 mm (0.5217 inch).

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