Hydraulic Test Ports - Jacobsen JMP653F Manual

8 MAINTENANCE AND LUBRICATION
8.8

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 (290
psi + - 29 psi)
2. Forward traction pressure, engine
running, no drive (Wheel restraints
installed). Should balance charge
pressure constant 250 Bar (3629 psi),
Peak 280 Bar (4061 psi).
3. Reverse traction pressure (plugged
port). Engine running, no drive (Wheel
restraints installed), should balance
charge pressure, maximum 210 Bar
(3045 psi), peak 250 Bar (3629 psi).
NOTE: Only approved personnel must service the hydraulic system.
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