Manual 2007 Rev B p/n 2007
37
Although Tuthill Vacuum & Blower Systems blowers are well designed and manufactured, problems may occur
due to normal wear and the need for readjustment. The following chart lists symptoms that may occur along
with probable causes and remedies.
SYMPTOM PROBABLE CAUSE REMEDIES
Loss of oil
Gear housing not
tightened properly
Tighten gear housing bolts.
Lip seal failure Disassemble and replace lip seal.
Insuffi cient sealant
Remove gear housing and replace sealant. See Disassembly
of Blower on page 31.
Loose drain plug Tighten drain plug.
Excessive
bearing or gear
wear
Improper lubrication
Correct oil level. Replace dirty oil. See Lubrication on page
14.
Excessive belt tension
Check belt manufacturer’s specifi cations for tension and adjust
accordingly.
Coupling misalignment Check carefully. Re-align if necessary.
Lack of volume
Slipping belts
Check belt manufacturer’s specifi cations for tension and adjust
accordingly.
Worn lobe clearances
Check for proper clearances. See Assembly Clearances on
page 39.
Speed too low Increase blower speed within limits.
Obstruction in piping Check system to ensure an open fl ow path.
Knocking
Blower out of time Re-time.
Distortion due to
improper mounting or
pipe strains
Check mounting alignment and relieve pipe strains.
Excessive pressure
differential
Reduce to manufacturer’s recommended pressure. Examine
relief valve and reset if necessary.
Worn gears
Replace timing gears. See Disassembly of Blower on page
31.
TROUBLESHOOTING
09
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