17
Series 26 - Model 26000 Multiple Gear Pump
Trouble Shooting
Problem
Possible Cause
Correction
Cavitation
a. Oil too heavy.
a. Change to proper viscosity
b. Oil filter plugged.
b. Clean filter.
c. Suction line plugged or too small.
c. Clean line and check size of line.
Oil heating
a. Oil supply low.
a. Fill reservoir.
b. Contaminated oil.
b. Drain reservoir and refill with clean oil.
c. Setting of relief valve too high or
too low.
c. Set to correct pressure.
d. Oil in system too light.
d. Drain reservoir and refill with proper
viscosity oil.
Shaft seal leakage
a. Worn shaft seal.
a. Replace shaft seal.
b. Worn shaft in seal area.
b. Replace drive assembly.
c. Debris in shaft seal suction side
drain holes.
c. Disassemble pump and inspect.
Foaming oil
a. Low oil level
a. Fill reservoir.
b. Air leaking into suction line
b. Tighten fittings.
c. Wrong kind of oil.
c. Drain and fill reservoir with
non-foaming oil.
