Maxon MXT-25, Maintenance Manual

Page: 47 / 61

1
1921 Slauson
A
ve. Santa Fe Springs, CA. 90670 (800) 227-41
16 F
AX (888) 771-7713
47
LIFTGATE WILL NOT LIFT RATED CAPACITY
3.
Check the 2750 PSI relief valve as follows. With platform on the
ground, remove plug from port
“G” (FIGS. 47-1, 47-1A, 47-2 and
47-2A)
. Install 0-4000 PSI pressure gauge in port
“G”
(FIGS. 47-1, 47-1A, 47-2 and 47-2A)
.
CONNECTING PRESSURE GAUGE
(GRAVITY DOWN POWER UNIT)
FIG. 47-1
PRESSURE
GAUGE
1.
Use voltmeter to verify the battery voltage, under load from pump motor, is a minimum
10.5 volts DC, or 21 volts DC for a 24 volt DC system,
2.
Check for structural damage or lack of lubrication. Replace worn 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 hydrau-
lic lines, clean up contaminants that can get in the openings. Also, protect the
openings from accidental contamination during maintenance.
CAUTION
FIG. 47-1A
PORT “G”
CONNECTING PRESSURE GAUGE
(POWER DOWN POWER UNIT)
FIG. 47-2
PRESSURE
GAUGE
FIG. 47-2A
PORT “G”
PORT “G” PLUG
PORT “G” PLUG