V-BELT 4N8218 - Caterpillar

Illustration 1 g02582277
Typical example
Table 1
Specification for 283-7639 Camshaft Gp and 285-3785 Camshaft Gp
Item Qty Part Specification Description
A - - Dimension of groove in a new camshaft for the thrust washer assembly is 8.75 0.05 mm (0.344 0.002 inch).
C 2 4N-1650 Dowel Extension of the dowels between the camshafts is 22.0 0.5 mm (0.87 0.02 inch).
D 2 5B-5821 Dowel Extension of the dowel from the camshaft assembly 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).
Bore in camshaft bearing after installation is 92.00 0.06 mm (3.622 0.002 inch).
- - - End play for a new camshaft assembly is 0.15 to 0.35 mm (0.006 to 0.014 inch).
1 16 5P-0076 Bolt Torque to 55 7 N m (41 5 lb ft).
Illustration 2 g02582338
Table 2
Specification for 283-7639 Camshaft Gp and 285-3785 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 13.807 mm (0.5437 inch).
Exhaust lobe is 13.250 mm (0.5217 inch).