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33
5.
Check the hydraulic cylinder. With the platform at
vehicle ! oor level, remove the hydraulic line from
the RELIEF port on the cylinder (FIG. 33-1). Hold
the control switch in the “RAISE” position for two
seconds while you watch for hydraulic ! uid at the
RELIEF port. A few drops of hydraulic ! uid escap-
ing the port is normal. However, if ! uid streams
out, piston seals are worn. Replace seals.
FIG. 33-1
RELIEF
PORT
RAISE
PORT
CYLINDER
6. If pump cannot produce 2250 +/- 150
PSI or lift the load capacity with a mini-
mum of 12.6 volts available, the pump is
worn and needs to be replaced.
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