GEAR (43 Teeth) 4S8716 - Caterpillar

Illustration 1 g03418193
Table 1
Specification for 380-4432 Pressure Control Valve Gp
Item Qty Part Specification Description
1 1 360-2963 O-Ring Seal Before assembly, lubricate the bore lightly with the fluid being sealed.
2 1 285-6589 Spring Spring used for the oil bypass valve:
Length under test force is 87.6 mm (3.45 inch).
Test force is 1669 83 N (375 19 lb).
Free length after test is 148.3 mm (5.84 inch).
3 1 288-4597 Spring Spring used for the regulator valve of the oil:
Length under test force is 85.5 mm (3.37 inch).
Test force is 1871 126 N (421 28 lb).
Free length after test is 105.4 mm (4.15 inch).
Illustration 2 g03410187
Illustration 3 g03410202
Table 2
Test Specifications
Item Qty Part Specification Description
A - - Pressure Port
B - - Tank Port
C - - Gallery Port
D - - Cartridge Check Valve
E - 177-7131 Shim (1)
or
177-7130 Shim (2) Regulator Valve and Shims
F - 177-7131 Shim (1)
or
177-7130 Shim (2) Bypass Valve and Shims
Test Requirements
- - - 1. Set test stand relief to 2000 kPa (290 psi)
2. For all testing leave cap on gallery port
Test Procedure
- - - Use the following test steps in order to test the pressure control valve:
1. Leakage Check
A. Apply 700 50 kPa (102 7 psi) pressure to the pressure port.
B. Maximum allowable flow from tank port is 6 L/min (1.6 US gpm)
2. Bypass Valve Test
A. Vent "GP" port to atmosphere
B. Apply 250 25 L/min (66 7 US gpm) pump flow to pressure port
Note: The cracking pressure for the valve should be 975 25 kPa (140 4 psi). Add shims if pressure is below 950 kPa (138 psi). Remove shims if pressure is above 1000 kPa (145 psi).
1. One 177-7130 Shim raises the pressure roughly 14 kPa (2 psi)
2. One 177-7131 Shim raises the pressure roughly 7 kPa (1 psi)
3. Regulator Valve Test
A. Connect "GP" port to pressure port
B. Apply 250 25 L/min (66 7 US gpm) pump flow to pressure port
C. Full flow should be seen at the tank port
Note: The cracking pressure should be 590 25 kPa (86 4 psi) for the 380-4432 Pressure Control Valve Gp and 660 25 kPa (96 4 psi) for the 424-9011 Pressure Control Valve Gp
1. One 177-7130 Shim raises the pressure roughly 14 kPa (2 psi)
2. One 177-7131 Shim raises the pressure roughly 7 kPa (1 psi)
(1) 0.50 mm (0.02 inch)
(2) 1 mm (0.04 inch)