Trouble Shooting - Tennant ATLV 4300 Service Manual

Series 26 - Model 26000 Single Gear Pumps

Trouble Shooting

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