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BRACKET 3534512 - Caterpillar



3534512 BRACKET Caterpillar parts BRACKET
Rating:
56
Alternative (cross code) number:
CA3534512
353-4512
3534512
Caterpillar 3534512 BRACKET
Weight: 1 pounds 0 kg.

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Machine Preparation
Position the machine on level ground and stop the engine.
Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".
Illustration 2 g03882127
Pump compartment
(1) Pressure tap (pressure for drive pump)
Attach a 41368 kPa (6000 psi) pressure sensor to pressure tap (1). Test Procedure
Standard
Start the engine.
Place the machine controls at the following settings: engine speed dial "10" and AEC switch OFF. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Move the joystick for the bucket until the bucket is at the full BUCKET CLOSE position (full extension of the bucket cylinders).
Check the pressure reading for the main relief valve pressure setting. Refer to Table 1.
Return the joystick for the bucket to the NEUTRAL position. Heavy Lift (If Equipped)
Note: The main relief valve should have a 1000 kPa (145 psi) pressure difference between heavy lift mode and standard lift mode.
Start the engine.
Place the machine controls at the following settings: engine speed dial "10" and AEC switch OFF. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Illustration 3 g03409099
Switch for heavy lift
Set heavy lift switch (2) to the OFF position. The indicator light should not be illuminated.
Move the joystick for the bucket until the bucket is at the full BUCKET CLOSE position (full extension of the bucket cylinders).
Check the pressure reading for the main relief valve pressure setting. Refer to Table 1.
Return the joystick for the bucket to the NEUTRAL position.
Set heavy lift switch (2) to the ON setting. Make sure that the indicator light is on.
Move the joystick for the boom until the boom is at the full BOOM RAISE position (full extension of boom cylinders).
Check the pressure setting of the heavy lift at pressure tap (1). Refer to Table 1
Return the joystick for the boom to the NEUTRAL position. Adjustment Procedure
Standard
Illustration 4 g02102305
Main relief valve
(A) Adjustment screw
(L) Locknut
Loosen the locknut and turn the adjustment screw until the pressure reading at the pressure tap for the drive pump is within the specification. Refer to Table 1. Note: Turn the adjustment screw clockwise in order to increase the pressure. Turn the adjustment screw counterclockwise in order to decrease the pressure.Note: Always make final pressure adjustments on pressure rise.
Tighten the locknut. Heavy Lift (If Equipped)
Illustration 5 g02061719
Main relief valve (heavy lift)
(LH) Locknut for heavy lift
(AH) Adjustment screw for heavy lift
(LM) Locknut for main relief
(AM) Adjustment screw for main relief When the main relief pressure setting is adjusted, the pressure setting for heavy lift is not affected. When adjustment screw (AM) is turned counterclockwise in order to decrease the main relief setting, the pressure difference between the main relief setting and the pressure setting for


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