TROUBLESHOOTING 777 SERVICE MANUAL
10-46 Published 10-01-2012, Control # 045-08
Test 16 – Checking Charge Pressure at Motor Port X1
Install a 0-500 psi gauge between the hydraulic hose and
the connector at port X1. See Test 10 for location of port X1.
Verify approximately 350 psi pressure with system on at idle
speed. A lower pressure reading indicates the need for an
adjustment or replacement of charge pump. See Test 14.
Item Description
1 Connector
2 Port X1 connection
3 Hydraulic hose
FIGURE 10-21
P574
1 2
3
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