C8.7 Marine Engines Caterpillar


Camshaft

Usage:

C8.7 CS7



Illustration 1g03758138



Illustration 2g03761879

Table 1
Specification for 431-4117 Camshaft    
Item     Qty     Part     Specification Description    
1     5     438-0901 Bolts     Tighten to
20 ± 2 N·m (177 ± 18 lb in) in the following sequence 1-2-3-4-5.
Tighten bolts again to
20 ± 2 N·m (177 ± 18 lb in) the following sequence 1-3-5-2-4    
2     4     438-0903 Bolts     Tighten to
25 ± 1.25 N·m (220 ± 11 b in )
Turn the bolts an addition 45 ± 5 degrees    
3     3     431-4124 Sealing Plate     Tighten to
23 ± 2 N·m (204 ± 18 lb in)    
4     3     438-0914 Bolt     Tighten to
23 ± 2 N·m (204 ± 18 lb in)    



Illustration 3g03331247

Table 2
Item     Qty     Part     Specification Description    
-     -     -     Use the following procedure in order to determine the actual camshaft lobe lift:
1. Measure camshaft lobe height (C).
2. Measure base circle (D).
3. Subtract the base circle (D) from the camshaft lobe height (C). The difference is the actual camshaft lobe lift.    
B     -     -     Specified camshaft lobe lift for:
Inlet lobe is
7.4034 mm (0.2915 inch).
Exhaust lobe is
8.2108 mm (0.3233 inch).    

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