VALVE GP-CONTROL 1542188 - Caterpillar

Illustration 1 g03779750
Table 1
Specifications for 7W-9957 Compression Release Valve Gp
Item Qty Part Specification Description
1 1 7W-9959 Seat Before assembly, apply Loctite C5A copper anti-seize to the threads.
2 1 197-4708 Spring Length under test force is 90.0 mm (3.54 inch).
Test force is 3300 100 N (742 22 lb).
Free length after test is 103.5 mm (4.07 inch).
3 1 - Use the following procedure to install the compression release valve:
Before assembly, apply Loctite C5A copper anti-seize to the threads.
Tighten the valve body to 275 25 N m (203 18 lb ft).
Run the engine for at least 4 minutes at rated conditions.
Again, tighten the valve body to 275 25 N m (203 18 lb ft).
5 1 7W-9960 Adapter Before assembly, apply Loctite C5A copper anti-seize to the threads.
Turn the adapter until the seat opens at 20640 300 kPa (2994 44 psi).
Once the setting is made, rotate the adapter until the flat that requires the least rotational movement is perpendicular with a hole in the body.
Tighten the set screw (4).
The minimum travel of the seat (1) after the setting of the set screw (4) is 0.85 mm (0.033 inch).