ROD AS-ANCHOR 8I3493 - Caterpillar

Heavy Lift
Note: Machines that are equipped with heavy lift have a high-pressure setting and a low pressure setting for the main relief valve.
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 4 g02062913
Switch for heavy lift
Set the switch for heavy lift to the OFF position. The indicator light should not be illuminated.
Move the joystick for the boom until the boom is at the full BOOM RAISE position (full extension of boom cylinders).
Check the pressure reading for the main relief valve pressure setting. Refer to Table 1.
Return the joystick for the boom to the NEUTRAL position.
Illustration 5 g02061934
Switch for heavy lift
Set heavy lift switch (A) to the ON position. Make sure