Maxon RA-35, Руководство по обслуживанию

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32
TROUBLESHOOTING
LIFTGATE WILL NOT LIFT RATED CAPACITY
1.
Use voltmeter to verify the
battery voltage is 12.6 volts or
more under load from pump
motor.
2.
Check for structural damage
or lack of lubrication. Replace
warn parts.
Keep dirt, water and other contaminants
from entering the hydraulic system. Before
opening the hydraulic fl uid reservoir fi ller
cap, drain plug and hydraulic lines, clean
up contaminants that can get in the open-
ings. Also, protect the openings from acci-
dental contamination during maintenance.
CAUTION
3.
Check the 2250 PSI pressure relief
valve as follows. With platform on the
ground, remove plug from test port
(FIG. 32-1)
. Install 0-4000 PSI pres-
sure gauge in the test port
(FIG. 32-1)
.
Hold the control switch in the “
RAISE
”
position. Adjust the relief valve until the
gauge reads 2250 +/- 150 PSI
(FIGS.
32-1)
. Remove gauge and reinstall plug
in the port. Then, reinstall relief valve
cover.
ADJUSTING RAISING RELIEF VALVE
FIG. 32-1
ADJUSTMENT
COVER
RELIEF VALVE
ADJUST SCREW
PRESSURE
GAUGE
TEST
PORT
4.
Check if pump relief valve is dirty. Clean or
replace relief valve, if necessary.