HOUSING AS 5048890 - Caterpillar

Illustration 1 g03318091
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.