Jacobsen ZB Series Safety, Operation And Maintenance Manual page 88

8 MAINTENANCE AND LUBRICATION
8.9 HYDRAULIC TEST PORTS ______________________________________________
If you have any problems with the hydraulic system, check the hydraulic pressures with the service ports that are
supplied.
All tests must be done with the hydraulic oil at the normal temperature of the engine, unless specified at a different
temperature.
Test Ports:
1. Charge pressure: 20 Bar ± 2 Bar.
2. Forward traction pressure, engine
running, no drive. Should balance
charge pressure constant 300 Bar.
3. Reverse traction pressure (plugged
port). Engine running, no drive, should
balance charge pressure, maximum
280 Bar.
en-86
Only approved personnel must service the hydraulic system.
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NOTICE