Harbor Freight Tools 97870 - Manual (Page 13)

Page 13 SKU 97870 For technical questions, please call 1-800-444-3353.
Troubleshooting
Problem Possible Causes Likely Solutions
Decreased output. 1. Not enough air pressure and/
or air flow.
2. Obstructed valve.
3. Incorrect lubrication
inadequately lubricated.
4. Blocked air inlet screen (if
equipped).
5. Air leaking from loose housing.
6. Mechanism contaminated.
7. Rotor blade wear or damage.
1. Check for loose connections and make sure
that air supply is providing enough air flow
(CFM) at required pressure (PSI) to the
tool’s air inlet. Do not exceed maximum air
pressure.
2. Clean around valve to ensure free
movement.
3. Lubricate using air tool oil and grease
according to directions.
4. Clean air inlet screen of buildup.
5. Make sure housing is properly assembled
and tight.
6. Have qualified service technician clean and
lubricate mechanism. Install in-line filter in air
supply as stated in Initial Set Up: Air Supply.
7. Replace all rotor blades as a set.
Housing heats
during use.
1. Incorrect lubrication or not
enough lubrication.
2. Worn parts.
1. Lubricate using air tool oil and grease
according to directions.
2. Have qualified service technician inspect
internal mechanism and replace parts as
needed.
Severe air
leakage.
(Slight air leakage
is normal,
especially on older
tools.)
1. Cross-threaded housing
components.
2. Loose housing.
3. Damaged valve or housing.
4. Dirty, worn or damaged Control
Ring (3).
1. Check for incorrect alignment and uneven
gaps. If cross-threaded, disassemble and
replace damaged parts before assembly.
2. Tighten housing assembly. If housing cannot
be tightened properly, internal parts may be
misaligned.
3. Replace damaged components.
4. Clean or replace Control Ring assembly.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect air supply before service.