SAF-HOLLAND XL-FW428-01 FW2800 Series Hydraulic Elevating Fifth Wheels - Manual (Page 12)

12 SAF-HOLLAND, Inc. XL-FW428-01 Rev A
TROUBLESHOOTING
PROBLEM:
Will not lift.
POSSIBLE CAUSE SOLUTION
Insufficient oil .............................................. Check oil level. The tank should contain 4˝ of oil in the
down position. If low, add oil.
PTO not engaged ........................................ Engage the PTO. Check the shifter for
proper operation.
Engine r.p.m. too low .................................. Increase to 1,000 to 1,200 r.p.m.
Control valve ............................................... Check for full throw.
Load exceeds capacity ................................. Reduce the weight of the trailer.
Flow restriction ............................................ Check for ruptured or collapsed hoses; check oil filter;
clear the lines.
Pump is losing prime ................................... Raise the oil tank and/or line above the pump inlet.
Pump is running hot .................................... PTO left in gear; disengage when not in use.
Oil foaming (contains air) ........................... Tighten all fittings and check for leaks.
PROBLEM:
Raises or lowers slowly.
POSSIBLE CAUSE SOLUTION
PTO not engaged ........................................ Engage the PTO.
Engine r.p.m. too low .................................. Increase to 1,000 to 1,200 r.p.m.
Control valve ............................................... Check for full throw.
Incorrect pressure ........................................ Raising pressure circuit should be 1,800 p.s.i.; lowering
circuit pressure should be 150 p.s.i.
Flow restricted ............................................. Check for ruptured or collapsed hoses, check oil filter,
clear lines.
PROBLEM:
Oil tank is overflowing.
POSSIBLE CAUSE SOLUTION
Too much oil in the system ......................... Check oil level. Tank should contain 4˝ of oil in the
down position.
Oil foaming (contains air) ........................... Tighten all fittings and check for leaks.