MOUNT AS 3168922 - Caterpillar

Illustration 11 g02416256
(1) Lock (2) Rotocoil (3) Outer Valve spring (4) Inner Valve spring (5) Washer (6) Stem seal (7) Intake valve (8) Valve guide (9) Exhaust valve (10) Valve seatWhen the tip of a valve is ground, a maximum limit of 0.20 mm (0.008 inch) of stock can be removed. The overall length of the valve must also be within the specifications.
Illustration 12 g01403543
(N) Stem diameter (P) Thickness of the lip (R) Diameter of the head (S) Angle of the valve face (T) Overall length
Table 10
Specifications for the Valves    
Part Number     Angle of the Valve Face (S)     Diameter of the Head (R)
New Valve     Thickness of the Lip (P)
New Valve     Minimum Thickness of the Lip (P)     Stem Diameter (N)
New Valve     Overall Length (T)    
153-7023
Inlet     60.75 0.25 degrees    
47.00 0.13 mm (1.850 0.005 inch)    
4.00 0.20 mm (0.158 0.008 inch)    
2.75 mm (0.108 inch)    
9.441 0.010 mm (0.3717 0.0004 inch)    
202.00 0.45 mm (7.953 0.018 inch)    
153-7024
Exhaust     45.75 0.25 degrees    
41.81 0.13 mm (1.646 0.005 inch)    
3.56 0.20 mm (0.140 0.008 inch)    
2.05 mm (0.081 inch)    
9.441 0.010 mm (0.3717 0.0004 inch)    
202.06 0.45 mm (7.955 0.018 inch)    
152-8380
Inlet     60.75 0.25 degrees    
47.00 0.13 mm (1.850 0.005 inch)    
4.00 0.20 mm (0.158 0.008 inch)    
3.02 mm (0.119 inch)    
9.441 0.010 mm (0.3717 0.0004 inch)    
202.00 0.45 mm (7.953 0.018 inch)    
152-7585
Exhaust     45.75 0.25 degrees    
41.81 0.13 mm (1.646 0.005 inch)    
3.56 0.20 mm (0.140 0.008 inch)    
2.05 mm (0.081 inch)    
9.441 0.010 mm (0.3717 0.0004 inch)    
202.06 0.45 mm (7.955 0.018 inch)    Valve Recess
Illustration 13 g01620134
(V) Valve Recess (W) Valve ProjectionThe valve recess is the dimension from the surface of combustion on the cylinder head to the face of the valve. Two dimensions are provided for the valve recess. The new dimension should be used on new components. The dimension for reusability accounts for a cylinder head that has been machined or a ground valve. A valve recess that is negative indicates a projection of the valve.
Table 11
Specifications for Valve Recess    
Part Number of the Valve     Maximum Valve Recess
New     Minimum Valve Recess
New     Maximum Valve Recess
Reusability     Minimum Valve Recess
Reusability    
153-7023
Inlet    
2.83 mm (0.111 inch)    
2.17 mm (0.085 inch)    
3.88 mm (0.153 inch)    
2.17 mm (0.085 inch)    
153-7023
Inlet with shortened valve seat insert    
3.38 mm (0.133 inch)    
2.72 mm (0.107 inch)    
4.43 mm (0.174 inch)    
2.72 mm (0.107 inch)    
153-7024
Exhaust    
1.81 mm (0.071 inch)    
1.19 mm (0.047 inch)    
3.12 mm