Maxon Railgate RCM-1250C, Руководство по обслуживанию

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50
1
1921 Slauson
A
ve. Santa Fe Springs, CA. 90670 (800) 227-41
16 F
AX (888) 771-7713
PLATFORM RAISES, BUT LEAKS DOWN
TROUBLESHOOTING
PLATFORM RAISES, BUT WILL NOT LIFT RATED CAPACITY
7. 7. Check “DOWN” valve as noted Check “DOWN” valve as noted
in paragraph 6. in paragraph 6.
8. 8. Check hydraulic cylinder. Check hydraulic cylinder.
With platform on ground, dis- With platform on ground, dis-
connect vent line from butt end connect vent line from butt end
of cylinder
of cylinder (FIG. 50-1) . Operate . Operate
control switch to raise platform. control switch to raise platform.
Observe vent port on cylinder
Observe vent port on cylinder
(FIG. 50-1) . As platform raises . As platform raises
if oil sprays or spurts from port, if oil sprays or spurts from port,
this indicates seals are worn.
this indicates seals are worn.
Refer to seal kits in parts Refer to seal kits in parts
section. section.
9. Adjust relief valve on top of pump (FIG. 50-2) . With platform on
ground, remove hose and install a pressure gauge (0-3000 psi).
Activate “UP” switch and turn relief valve clockwise until gauge
shows 2250 +/- 50
psi.
10 . Check hydraulic cylinder per paragraph 8.
11. If pump cannot produce 2200 to 2300 psi (FIG. 50-2) and a
minimum of 12 volts are available, pump is worn and requires
replacement.
INCREASE DECREASE
RANGE OF ADUSTMENT
2200 2300 psi
VENT PORT
PUMP
DISCONNECTING LINE FROM VENT PORT
FIG. 50-1
ADJUSTING RELIEF VALVE
FIG. 50-2