FRAME GP-REAR 4E0844 - Caterpillar

Adjustment of the Relief Valve for the Bank Valve (Three-Point Hitch)
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If the system pressure is out of the specification during the stall test, then adjust the main relief valve for the Implement Valve.The main relief valve (C) for the Implement valve is located in the inlet manifold of the Implement valve.
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Remove the plastic cap (13) in order to access the screw for adjusting .
Rotate the screw for adjusting (14) in order to change the setting. Make small rotations at a given time. Note: Do not adjust more than a quarter turn.Note: Rotate the screw for adjusting clockwise in order to increase the pressure setting. Rotate the screw for adjusting counterclockwise in order to decrease the pressure setting.
Install the plastic cap (13) after adjustment.High Pressure Stall Test for the Loader
Note: Perform the High Pressure Stall Test for the Bank Valve (Three-Point Hitch) before the High Pressure Stall Test for the Loader.Note: Perform the "Margin Pressure Test" before the "High Pressure Stall Test".
Lower the work tool on the front of the machine to the ground. Engage the parking brake.
Start the engine. Run the engine at 1200 RPM.
Move the tilt control for the loader in order to tilt the bucket. Stall the bucket in a rack position. Note the pressure reading at pressure tap (5). See Table 2 for the proper pressure readings at pressure port (5) .
If the pressure is not within the specification, the signal relief valve needs to be adjusted. Refer to "Adjustment of the Signal Relief Valve For the Loader".
Stop the engine and remove the gauges.Adjustment of the Signal Relief Valve For the Loader
If the system pressure is out of the specification during the stall test, then adjust the signal relief valve for the loader.
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Bank Valve for the loader (D) Signal relief valve for the loaderThe signal relief valve for the loader is located in the inlet manifold of the loader valve on the bottom side. The signal relief valve for the loader is in the same location for single tilt valves. Also, the signal relief valve for the loader is in the same location for two and three bank valves.
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(D) Signal relief valve for the loader (15) plastic cap (16) Allen Head Screw for adjusting
Remove the plastic cap (15) in order to access the screw for adjusting (16) .
Rotate the allen head screw (16) in order to change the setting. Make small rotations at a given time. Note: Do not adjust more than a quarter turn.Note: Rotate the screw for adjusting (16) clockwise in order to increase the pressure setting. Rotate the screw for adjusting (16) counterclockwise in order to decrease the pressure setting.
Install the plastic cap (15) after adjustment.Adjustments for the Pump Control Valve
When the compensator valve is rebuilt, ensure that the pressure compensator adjustment and the flow compensator adjustment are backed out to a low pressure setting before the engine is started. Severe pump damage and system damage could be the result, or the engine may not start.
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Compensator valve