COVER 1549658 - Caterpillar

Required Tools
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Tooling (A)
Table 1
Required Tools    
Part Number    Description    Quantity    
1U-5796     Pressure Differential Gauge (Group)     1    
Table 2
Tools Needed from the 1U-5796 Pressure Differential Tool Gp    
Tooling    Item    Part Number    Description    Qty    
A     A1     177-7861     Hose As     1    
A2 6V-4143     Quick Connect Coupler     4    
A3 6V-3965     Fitting As     3    
A4 6V-4144     Quick Connect Coupler     1    
A5 8T-0861     Pressure Gauge
60000 kPa (8600 psi)     1    
A6 8C-8431     Tee     1    
A7 1U-5793     Pressure Differential Gauge Group     1    
A8 6V-0484     O-Ring Adapter     1    
A9 177-7861     Hose As     1    Adjustment Procedure (Pressure Compensator Spool)
ReferenceRefer to "High Pressure Stall Test" in Testing and Adjusting, "Pump Discharge Pressure - Test" in this module.
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The pressure compensator spool is located on the implement pump under the floorplate of the operator's station. (5) Pressure compensator spool (8) Flow compensator spool
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Pressure compensator spool in the pump control valve (steering) (3) Adjustment screw (4) Spring (5) Pressure compensator spool (6) Cover (7) LocknutWhen a high-pressure stall test indicates a need for adjustment of the pressure compensator spool, follow this procedure:
Lower the implements to the ground.
Stop the engine. Move the implement control levers and move the steering control lever to all positions in order to release the pressure from the hydraulic system.
Remove the floorplate.
Hold adjustment screw (3) and loosen locknut (7) . Turn adjustment screw (3) counterclockwise in order to decrease the pressure setting. Turn adjustment screw (3) clockwise in order to increase the pressure setting.
When the pressure setting is adjusted, hold adjustment screw (3) with the