Lincoln FlowMaster C Series - Page 7

Page Number - 7
Form 403626
FlowMaster™ Rotary Driven Hydraulic Pump
Troubleshooting
Condition Possible Cause Corrective Action
Pump does not run. No pressure on gauge (72):
- Closed Supply line shut off valve. Open shut-off valve.
- No power to solenoid valve (73). Correct electrical fault.
- Faulty Solenoid (74). Replace solenoid (74).
- Pressure Reducing Valve (77) is Reset Pressure Reducing Valve (77).
set too low.
- Insuffi cient Hydraulic Fluid supply. Check hydraulic supply for proper
pressure and fl ow.
Pressure is shown on gauge (72):
- Closed Fluid outlet line. Check outlet line and clear
obstructions.
- Flow Control valve is fully closed. Readjust valve to 3/4 turn open.
- Pump is stalled due to grease Check vent valve in system.
backpressure.
Pump is seized or damaged. Dismantle the pump and repair
defective or seized component. See
disassembly and assembly
procedure.
Pump speeds up or runs erratically. Low level of grease or reservoir Refi ll reservoir.
is empty
Follower plate is stuck and separated Check follower plate and container
from grease. for damage.
Pump piston or checks are worn. Disassemble the pump and repair.
Pump runs, but output is low. Insuffi cient hydraulic fl uid supply. Check hydraulic supply and adjust
fl ow using valve (70).
Inlet pressure too low. Increase pressure using valve (77).
Faulty inlet (25, 27) , faulty discharge Replace faulty components.
check (18, 19) or damaged O-ring (26).
Weepage from housing cover 30. Cup seal (15) or O-Ring (13b) wore out. Check the seals and replace if
necessary.
Pump becomes noisy. No crank case oil. Add crank case oil. Remove Pipe
Plug (67a) from Pump Housing (67).
Oil level should be at the bottom of
the Pipe Plug opening. For Models
85480, 85481, 85482, 85483 and
85247. Check dipstick to verify.
For Model 85610, add light weight
Mobil Arrow HFA Hydraulic Oil until
the crankcase is full.
Worn wrist pin bushing (12). Check the bushings and replace if
necessary.
Pump does not build pressure. Foreign material holding lower Dismantle & clear check. Consider
check open. installing strainer (272180).©
before returning pump to service.
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