C11 and C13 Engines Caterpillar

Illustration 1	g01351852

Illustration 2	g02745479
Inlet valve

Note: Apply 8T-9548 Oil to the valve stems prior to installation in the cylinder head.

(1) Inlet valve

(B) Valve stem diameter ... 9.441 ± 0.008 mm (0.3717 ± 0.0003 inch)

(C) Diameter of valve head ... 44.50 ± 0.13 mm (1.752 ± 0.005 inch)

(D) Valve face angle ... 60.75 ± 0.25 degrees

(E) Minimum valve stem diameter ... 9.309 mm (0.3665 inch)

(F) Width of the valve head ... 3.5 ± 0.2 mm (0.14 ± 0.01 inch)

Illustration 3	g02746141
Exhaust valve

(2) Exhaust valve

(G) Valve stem diameter ... 9.441 ± 0.008 mm (0.3717 ± 0.0003 inch)

(H) Diameter of valve head ... 41.50 ± 0.13 mm (1.634 ± 0.005 inch)

(J) Valve face angle ... 45.75 ± 0.25 degrees

(K) Minimum valve stem diameter ... 9.309 mm (0.3665 inch)

(L) Width of the valve head ... 3.25 ± 0.10 mm (0.128 ± 0.004 inch)

(3) 224-4441 Spring

Inner valve spring

Assembled length ... 50.47 mm (1.987 inch)

Load at assembled length ... 160 ± 13 N (36 ± 3 lb)

Minimum operating length ... 34.92 mm (1.375 inch)

Load at minimum operating length ... 385 ± 18 N (87 ± 4 lb)

Outside diameter ... 23.24 mm (0.915 inch)

Free length after test ... 64.1 mm (2.52 inch)

(4) 332-2152 Spring

Outer valve spring

Assembled length ... 52.95 mm (2.085 inch)

Load at assembled length ... 320 ± 31 N (72 ± 7 lb)

Minimum operating length ... 37.40 mm (1.472 inch)

Load at minimum operating length ... 860 ± 34 N (193 ± 8 lb)

Outside diameter ... 34 mm (1.3 inch)

Free length after test ... 62.7 mm (2.47 inch)

Note: Apply clean 8T-9548 Oil to the valve guide bore before installing the valve guides.

(5) Valve guides

Bore of installed valve guide ... 9.508 ± 0.013 mm (0.3743 ± 0.0005 inch)

Maximum recommended diameter of the valve guide bore ... 9.544 mm (0.3760 inch)

(A) Height to the step in the valve guide ... 22 ± 0.5 mm (0.87 ± 0.012 inch)

Note: Do not use a combination of a valve and a valve guide that has a difference of 0.13 mm (0.005 inch) or more.

(6) Inlet valve seat

Angle of valve seat ... 29.75 ± 0.25 degrees

Diameter of valve seat ... 45.525 ± 0.013 mm (1.7923 ± 0.0005 inch)

Bore in cylinder head for valve seat ... 45.460 ± 0.015 mm (1.7898 ± 0.0006 inch)

(7) Exhaust valve seat

Angle of valve seat ... 44.75 ± 0.25 degrees

Diameter of valve seat ... 42.390 ± 0.015 mm (1.6690 ± 0.0006 inch)

Bore in cylinder head for valve seat ... 42.320 ± 0.015 mm (1.6661 ± 0.0006 inch)