Manual 2003 Rev D p/n 2003
29
Although Tuthill Vacuum & Blower Systems boosters 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.
Insufficient sealant
Remove gear housing and replace sealant.
Loose drain plug
Tighten drain plug.
See Instruction Manual Vacuum Booster
150-2700 Disassembly and Reassembly.
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 specifications for tension and adjust
accordingly.
Coupling misalignment Check carefully. Re-align if necessary.
Lack of volume
Slipping belts
Check belt manufacturer’s specifications for tension and adjust
accordingly.
Worn lobe clearances
Check for proper clearances.
See Assembly Clearances on
page 31
.
Speed too low
Increase booster speed within limits.
See Tuthill Technical
Bulletin 1.
Obstruction in piping
Check system to ensure an open flow path.
Knocking
Booster 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 Instruction Manual Vacuum
Booster 150-2700 Disassembly and Reassembly.
TROUBLESHOOTING
08