MUFFLER & CONVERTER AS 3541302 - Caterpillar

Illustration 4 g02085276
Implement control valve bank (1) Rod end of the left angle cylinder and the head end of the right angle cylinder (relief valve) (2) Relief valve for the rod end of the lift cylinder (machines that are equipped with a straight blade only) (3) Rod end of the right angle cylinder and the head end of the left angle cylinder (relief valve) (A) Bulldozer angle control valve (B) Bulldozer tilt control valve (C) Bulldozer lift control valveBench Test
Lower all of the implements to the ground.
Shut off the engine and move the control levers to all positions in order to release system pressure.
Carefully loosen the filler cap on the hydraulic tank in order to release any pressure in the tank. Tighten the cap.
Remove the desired relief valve for testing.
Install the relief valve in the 1U-5216 Manifold .
Connect the manifold to the hydraulic test bench.
Slowly increase pressure. Note the pressure reading when the relief valve opens. Adjust the relief valve, if necessary.Relief Valve Adjustments
Note: See the topic "Relief Valves" when you test the relief valves.
Illustration 5 g02085280
Typical line relief/makeup valve (4) Cap (5) Adjustment screw (6) Locknut
Remove protective cap (4) .
Loosen locknut (6) .
Turn adjustment screw (5) clockwise in order to increase the pressure setting. Turn adjustment screw (5) counterclockwise in order to decrease the pressure setting of the relief valve.
After the adjustment has been made, tighten locknut (6) and retest the adjustment.
Install cap (4) after the adjustment has been made.Testing and Adjusting the Relief Valves
Table 3
Tools Needed    
Part Number     Description     Qty    
8T-5320     Hydraulic Test Group     1    
Increase the temperature of the oil to the normal operating temperature.
Lower all of the implements to the ground.
Illustration 6 g02085293
Relief valve (1) Locknut (2) Cap (3) Adjustment screw
Illustration 7 g02085295
Control valves (grapple) (4) Relief valve for the head end of the tong cylinder (5) Relief valve for the rod end of the boom cylinder (6) Relief valve for the head end of the arch cylinder (7) Relief valve for the rod end of the arch cylinder (8) Relief valve for the head end of the boom cylinder (A) Port (B) Port (C) Port (D) Port (E) Port
Release the steering and hydraulic system pressure.
Carefully loosen the filler cap on the hydraulic tank in order to release any pressure in the tank. Tighten the cap.Note: The relief valves have a pressure setting that is higher than the pump compensator pressure. The valves must be removed in order to properly set the valves. Set the valves on a test bench or use supplemental pump pressure to set the valves.
Remove the hydraulic line from the appropriate port for the relief valve that is being tested. Refer to Table 4 and Illustration 7 in order to determine the appropriate port. Install a plug in the line.
Table 4
Relief Valve     Port    
Arch Cylinder     Head End     E    
Rod End D    
Boom Cylinder     Head End     B    
Rod End C    
Tong Cylinder     Head End