
11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
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PUMP RELIEF VALVE PRESSURE SETTING
NOTE: The pump pressure is set at the factory; however, if adjustment is
needed, use the following procedure.
1. Open the platform. Turn closer valve adjustment
(FIGS. 69-1 and 69-2) all the way clockwise.
Disconnect hose from folding port bulkhead fi tting
and connect 0-3000 PSI gauge to hose (FIGS.
69-1 and 69-2).
2. Remove cover (covering pump pressure relief
valve) from pump block (FIGS. 69-1 and 69-2).
Set Liftgate control box to FOLD. Turn the pump
pressure relief valve (FIGS. 69-1 and 69-2) to
obtain proper pump pressure setting of 2750 PSI.
Reinstall cover.
4. Disconnect 0-3000 PSI gauge from hose
(FIGS. 69-1 and 69-2) and reconnect hose to
folding port bulkhead fi tting.
5. Reset the closer valve adjustment (FIGS. 69-
1 and 69-2) to obtain platform closing speed
cycle of 4-6 seconds.
3. If this is a dual pump system, do the following.
Once pump 1 is set, select pump 2 with pump
select switch (FIGS. 69-1 and 69-2). Repeat
Steps 1 and 2 for pump 2.
TROUBLESHOOTING
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