Stepp SPHD series - Reservoir Overfilled; Pump Unusally Noisy; Air Trapped in System; Oil Spillage from Reservior Filler Cap

171
OMAHA STANDARD
WARNING! PROP OR BRACE BODY BEFORE SERVICING HOIST OR
WORKING UNDER BODY!
B. Cylinder mounts/hoist frame needs lubrication:
1) Wipe dirt from fittings and lubricate hoist pivot points with premium, graphite
base grease
7. PUMP UNUSALLY NOISY:
A. Pump mounting bolts loose:
1) Re-tighten bolts
B. Pump cavitating due to inlet air restriction or air in system:
1) Check reservoir filter screen and breather cap. Clean if dirty
2) Check reservoir oil level. Add oil if level is lower then 2” from top of reservoir
when hoists is fully closed.
3) Cycle hoist to full stroke 7-8 times to remove all air from cylinder
4) Change hydraulic oil to a non-foaming. Non-detergent type
8. Oil SPILLAGE FROM RESERVIOR FILLER CAP:
A. Air trapped in system:
1) Cycle hoist to full stroke 7-8 times to remove all air from cylinder
2) Change hydraulic oil to a non-foaming, non-detergent type
B. Reservoir Overfilled
1) Remove oil form reservoir until it is at proper level
C. Pump Sucking air into system:
Note: Always “power down” a double acting hoist to prevent sucking air into the
system and displacing oil from reservoir
1) Check reservoir oil level. All oil if level is lower than “2” from top of reservoir
when hoist is fully closed.
2) Check fittings and hoses for loose connections. Re-tighten fittings and hoses or
replace if necessary
D. Pump not engaged when lowering hoist:
1) You must engage pump to “power down” a double-acting hoist system. A
double-acting hoist will suck air into system and displace oil from reservoir if
allowed to “gravity down”