50
Problem
Possible Cause
Possible Solution
Connecting rod, piston pin, or
crank wrist pin bearings worn or
scored.
Inspect all. Repair or replace as
required.
Crankshaft seal worn or crankshaft
scored.
Replace seal or crankshaft
assembly.
Extremely dusty atmosphere.
Install more effective f ltration or
relocate unit.
Worn cylinder f nish.
Deglaze cylinder with 180 grit f ex-
hone.
Wrong gauge wire or length of
extension cord.
Check chart for proper gauge
wire and cord length. If possible,
eliminate extension cord.
Air compressor on unlevel surface. Do not incline the air compressor
more than 10° in any direction
while running.
Excessive starting and stopping
Compressor check valve leaky,
broken, carbonized or loose.
Clean or replace as required.
Inspect valves.
Defective motor, motor capacitor or
pressure switch.
Contact Jenny Customer Service
at 1-888-4-A-JENNY.
Air compressor is not large enough
for air required.
Check the accessory air
requirement. If it is higher than the
CFM or pressure supply of the air
compressor, you need a larger air
compressor.
Defective gaskets.
Replace and torque head bolts to 6
- 7 ft lb.
Fittings not tight enough or leaking. Warning drain air before tightening:
tighten f ttings where air can not be
heard escaping. Check joint with
soap solution. Do not overtighten.
Possible defective reed valve.
(Hand Carry Units)
Remove pump head and inspect
valve plate and (reed) valve. Clear
or replace valves as required.
Excessive noise during operation
Lubricant viscosity too low
Drain existing lubricant and ref ll
with Jenny Ultimate Blue Synthetic
lubricant.
Lubricant viscosity too high.
Drain existing lubricant and ref ll
with Jenny Ultimate Blue Synthetic
lubricant.
Lubricant level too low
Add Jenny Ultimate Blue Synthetic
Oil to crankcase to proper level.
Check for bearing damage.
Detergent type lubricant being
used.
Drain existing lubricant and ref ll
with Jenny Ultimate Blue Synthetic
lubricant.
Carbon build up on top of piston.
Clean piston. Repair or replace as
required.
Summary of Contents for Reciprocating Air Compressors
Page 4: ...4 Section 1 Safety and Health Instructions...
Page 14: ...14 Section 2 Introduction and Description...
Page 19: ...19 Section 3 Preparation for Use and Initial Installation Instructions...
Page 24: ...24 Section 4 Operating Instructions...
Page 36: ...36 Section 5 Maintenance Instructions...
