Jenny Reciprocating Air Compressors, Operation And Maintenance Manual

Page: 47 / 53

47
Problem Possible Cause Possible Solution
Ambient temperature too low. Relocate unit to warmer
environment. Ensure Jenny
Ultimate Blue Synthetic Oil is in
crankcase.
Worn cylinder f nish. Deglaze cylinder with 180 grit f ex-
hone
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.
Possible defective safety/relief
valve.
Operate safety relief valve manu-
ally by pulling on test ring. If it still
leaks, replace.
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.
Crankcase overf lled with oil. Drain oil. Ref ll to proper level with
Jenny Ultimate Blue Synthetic Oil.
Manual lock on pilot valve is in the
loaded position.
Move manual lock into an in-line
position.
Engine idle speed too low. Increase idle speed.
Engine problem. See “Taking care of unexpected
problems” in engine owners
manual.
Air compressor not making enough
air.
Clogged or dirty inlet and or
discharge line f lter.
Clean or replace.
Lubricant viscosity too high Drain existing lubricant and ref ll
with Jenny Ultimate Blue Synthetic
lubricant.
Compressor check valve leaky,
broken, carbonized or loose.
Clean or replace as required.
Inspect valves.
Carbon build up on top of piston. Clean piston. Repair or replace as
required.
Piston rings damaged or worn
(broken, rough, or scratched).
Excessive end gap or side
clearance. Piston rings not
seated, are stuck in grooves or end
gaps not staggered.
Install new rings.
Cylinder or piston scratched, worn,
or scored.
Repair or replace as required.