DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
16. Record the reading of the pressure gauge as Main
Relief Valve completely open.
17. If the pressures in Steps 13 and 15 meet specifi
cations, refer to
PRIMARY HYDRAULIC POWER
SYSTEM - General specification (A.1 0.A),
proceed
to step 20.
18. If the pressure setting of the main relief valve
does not meet specifications, refer to
PRIMARY
HYDRAULIC POWER SYSTEM - General speci
fication (A.10.A),
then attempt to adjust the main
relief valve to correct the pressure setting, refer to
Relief valve - Pressure setting (A.1 0.A).
If ad
justment does not correct the pressure setting, the
main relief valve must be removed and inspected for
possible repair or replacement.
19. If the main relief valve was adjusted, repaired or re
placed, do Steps 12 through 16 again.
20. Set the instrument cluster to read engine r/min
(rpm). Press the display button until the cluster
reads (X_####RPM).
21. Start the engine and adjust the engine speed to 2000
r/min (rpm).
22. Hold the blade control lever in the LIFT position and
adjust the pressure valve on the Flowmeter as re
quired to keep the pressure at 138 bar (2000 psi).
Adjust the engine speed to keep the engine running
at 2000 r/min (rpm). Read the flow gauge and record
the reading.
23. Hold the blade control lever in the LOWER (Power
Down) position and adjust the pressure valve on the
Flowmeter as required to keep the pressure at 138
bar (2000 psi). Adjust the engine speed to keep the
engine running at 2000 r/min (rpm). Read the flow
gauge and record the reading.
24. Hold the blade control lever in the ANGLE RIGHT po
sition and adjust the pressure valve on the Flowme
ter as required to keep the pressure at 138 bar (2000
psi). Adjust the engine speed to keep the engine run
ning at 2000 r/min (rpm). Read the flow gauge and
record the reading.
25. Hold the blade control lever in the ANGLE LEFT po
sition and adjust the pressure Load Valve on the
Flowmeter as required to keep the pressure at 138
bar (2000 psi). Adjust the engine speed to keep the
engine running at 2000 r/min (rpm). Read the flow
gauge and record the reading.
26. Hold the blade control lever in the TILT RIGHT po
sition and adjust the pressure Load Valve on the
Flowmeter as required to keep the pressure at 138
bar (2000 psi). Adjust the engine speed to keep the
engine running at 2000 r/min (rpm). Read the flow
gauge and record the reading.
87728445 1 2/28/2008
A.10.A / 29
Summary of Contents for 750L
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