TUBE-RETAINER 3844034 - Caterpillar

Specifications
Table 1
Main Relief Valve
Machine
Configuration Flow Rate Pressure Setting
Standard 38 4 L/min (10 1 US gpm) 21700 400 kPa (3150 58 psi)
VPAT 38 4 L/min (10 1 US gpm) 24400 400 kPa (3550 60 psi)
Actual
Flow and Pressure
Illustration 1 g02480656
Table 2
D6T Torque Specifications
Item Torque
Relief Valve (2) 65 5 N m (50 4 lb ft)
Locknut (4) 50 7 N m (40 5 lb ft) Introduction
The main relief valve for the hydraulic system is located in the inlet manifold on the main control valve. The main relief valve is not adjustable on the machine.The following procedure will determine if the main relief valve is out of adjustment.Required Tools
Table 3
Required Tools
Tooling Part Number Description Qty
A 1U-9358 Test Block Manifold 1 Test Procedure
Illustration 2 g02063513
Location of the implement main relief valve
(1) Inlet manifold
(2) Main relief valve Note: The implement valve stack is mounted under the right side of the operator platform. The main relief valve is located on the left side of the inlet manifold near the bottom.
Remove the main relief valve (2) from the inlet manifold (1).
Install the main relief valve (2) in the 1U-9358 Test Manifold Block tooling (A) in order to test the relief valve on the test bench. Tighten the main relief valve to a torque of 65 5 N m (50 4 lb ft). Note: The implement main relief valve has a setting that is higher than the pump cutoff pressure. The pressure setting for the main relief valve should be 21700 400 kPa (3150 58 psi) for a standard machine. The pressure setting for the main relief valve should be 24400 400 kPa (3550 60 psi) for a VPAT machine.Adjustment Procedure
Illustration 3 g02063514
Implement main relief valve
(2) Main relief valve
(3) Retainer
(4) Locknut
Loosen locknut (4).
Turn retainer (3) clockwise in order to increase the pressure setting and turn the retainer counterclockwise in order to decrease the pressure setting.
After setting the pressure, tighten locknut (4) to a torque of 50 7 N m (40 5 lb ft).
Install the main relief valve (2) back into the machine. Tighten the main relief valve to a torque of 65 5 N m (50 4 lb ft).