3500B Locomotive Engines Caterpillar

Cylinder Head Valves

Usage:

3516B LY3

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Illustration 1	g03318091

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Table 1
Specification for 378-7422 Cylinder Head Gp
Item	Qty	Part	Specification Description
1	4	316-5976 Spring	Length under test force is 60.29 mm (2.374 inch). Test force is 460 ± 23 N (103 ± 5 lb). Free length after test is 74.8 mm (2.94 inch).
2	4	316-5977 Spring	Length under test force is 57.5 mm (2.26 inch). Test force is 248.0 ± 12.4 N (55.8 ± 2.8 lb). Free length after test is 71.4 mm (2.81 inch).
3	2	316-5980 Valve Stem Seal	Install the valve stem seal to the inlet valves. Before assembly, coat with engine oil.
4	2	316-5981 Washer	Install the washer to the exhaust valves.
A	-	-	Height from the top of the cylinder head to the top of the valve guides is 26.0 ± 1.0 mm (1.02 ± 0.04 inch).
5	2	197-6995 Valve Guide	Bore of the exhaust valve guide after installation is 12.619 ± 0.025 mm (0.4968 ± 0.0010 inch).
6	2	133-9306 Valve Guide	Bore of the inlet valve guide after installation is 9.487 ± 0.025 mm (0.3735 ± 0.0010 inch).
7	2	194-4897 Exhaust Valve	Before assembly, coat the exhaust valve stems with clean engine oil. Stem diameter (B) is 12.464 ± 0.025 mm (0.4907 ± 0.0010 inch). Valve diameter (D) is 56.00 ± 0.15 mm (2.205 ± 0.006 inch). Face angle is 44.40 ± 0.25 degrees.
8	2	210-2542 Inlet Valve	Before assembly, coat the inlet valve stems with clean engine oil. Stem diameter (C) is 9.441 ± 0.010 mm (0.3717 ± 0.0004 inch). Valve diameter (E) is 56.00 ± 0.15 mm (2.205 ± 0.006 inch). Face angle is 19.40 ± 0.25 degrees.
9	2	130-2608 Valve Seat Insert	Diameter of exhaust valve seat insert is 60.119 ± 0.015 mm (2.3669 ± 0.0006 inch). Bore in the cylinder head is 60.000 ± 0.025 mm (2.3622 ± 0.0010 inch). Face angle is 45.00 ± 0.25 degrees.
10	2	130-2607 Valve Seat Insert	Diameter of inlet valve seat insert is 60.627 ± 0.015 mm (2.3869 ± 0.0006 inch). Bore in the cylinder head is 60.508 ± 0.025 mm (2.3822 ± 0.0010 inch). Face angle is 20.00 ± 0.25 degrees.

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