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160B&C TM
800-00140
Driven in the wrong direction of
rotation.
Coupling or shaft sheared or
disengaged.
Fluid intake pipe in reservoir
restricted.
Fluid viscosity too heavy to pick up
prime.
Air leads at intake. Pump not
priming.
Relief valve stuck open. (Models with
integral relief valve only).
Vane(s) stuck in the rotor slot(s).
System relief valve set too low.
Complete loss of flow from pump.
Pump intake partially blocked.
Air leaks at the intake or shaft seal.
(Oil in reservoir would probably be
foamy).
Pump drive speed too slow or fast.
Coupling misalignment.
Change drive direction immediately to
prevent seizure. Figure 10 shows
correct ring position for each direction
of rotation.
Disassemble pump and check shaft &
cartridge for damage. Replace
needed parts.
Check all strainer and filters for dirt
and sludge. Clean if needed.
Completely drain system. Add new
filtered fluid of proper viscosity.
Check inlet connections to determine
where air is being drawn in. Tighten
any loose connections. Ensure fluid in
reservoir is above intake pipe opening.
Check minimum drive speed which
may be too slow to prime pump.
Disassemble pump and wash valve in
clean solvent. Return valve to its bore
and check for stickiness. A gritty
feeling on valve periphery can be
polished with crocus cloth. Do not
remove excess material, round off
edges of lands or try to polish bore.
Wash all parts and reassemble pump.
Disassemble pump. Check for dirt or
metal chips. Clean parts thoroughly
and replace any damaged pieces. If
necessary flush system and refill with
clean fluid.
Use a pressure gage to correctly
adjust relief valve.
- A valve is stuck open permitting free
flow to tank.
- Broken inlet or pressure line.
- Actuator bypassing full flow. (Motor
valve plate lift).
Service intake strainers. Check fluid
condition and, if needed, drain and
flush system. Refill with clean fluid.
Check inlet connections and seal to
determine where air is being drawn in.
Tighten any loose connections and
replace seal if needed. Ensure fluid in
reservoir is above intake pipe opening.
Run pump at recommended speed.
Check if shaft seal bearing or other
parts have been damaged. Replace
any damaged parts. Realign coupled
shafts.
TROUBLE SHOOTING CHART
TROUBLE SHOOTING CHART
TROUBLE SHOOTING CHART
TROUBLE SHOOTING CHART
TROUBLE SHOOTING CHART
Table 1
Table 1
Table 1
Table 1
Table 1
Pump not delivering fluid.
Insufficient pressure build-up.
Pump making noise.
SERVO PUMP MAINTENANCE CONTINUED...
SERVO PUMP MAINTENANCE CONTINUED...
SERVO PUMP MAINTENANCE CONTINUED...
SERVO PUMP MAINTENANCE CONTINUED...
SERVO PUMP MAINTENANCE CONTINUED...
