169
OMAHA STANDARD
WARNING! PROP OR BRACE BODY BEFORE SERVICING HOIST OR WORKING
UNDER BODY!
CAUTION! DO NOT USE SAFETY PROP TO SUPPORT A LOADED BODY
1. HOIST WILL NOT RAISE LOAD:
A. Body overloaded or loaded too far forward:
1) Reduce load or shift load rearward
B. Valve assembly not actuating:
1) Valve must move full stroke when engaged. Check valve for contamination.
Clean or replace valve.
C. Cylinder mounts/hoist frame needs lubrication:
1)Wipe all dirt from fittings and lubricate hoist pivot points with premium,
Graphite base grease.
D. Restricted hydraulic line:
1) Check pinched hydraulic line. Re-route if necessary
E. Pump not running:
1) Check battery and cable connections
F. Low pump pressure:
1) Consult hoist specification chart show later in manual to determine the
maximum output pressure for your specific hoist. Adjust pump relief valve to
meet this specification.
WARNING! ADJUSTING THE HYDRAULIC PRESSURE TO MORE THATN THE
RECOMMENDED SETTING MAY CAUSE THE HOIST TO FAIL. THIS COULD CAUSE
DAMAGE, SERIOUS INJURY OR DEATH. CONTACT THE MANUFAC TURER OR AN
AUTHORIZED OMAHA STANDARD DISTRIBUTOR TO ADJUST PUMP OUTPUT
PRESSRUE
2) Replace pump if pump relief valve will not adjust to specification
2. HOISTS LIFTS SLOWLY
A. Oil is too thick:
1) Replace hydraulic oil with a lighter weight oil or ATF
(Automatic Transmission Fluid)
B. Low pump flow rate:
WARNING! PROP OR BRACE BODY BEFORE SERVICING HOIST OR WORKING
UNDER BODY!
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