Troubleshooting - Kobalt TQ3126 Manual

troubleShootinG

problem
Low discharge
pressure
Excessive noise
(knocking)
poSSible CauSe
1. Air demand exceeds
pump capacity
2. Restricted air intake
3. Air leaks (fittings,
tubing on compressor,
or plumbing outside of
system)
4. Blown gaskets
5. Leaking or damaged
valves
1. Loose motor pulley or
flywheel
2. Loose fasteners on pump
or motor
3. Lack of oil in crankcase
4. Worn connecting rod
5. Worn piston pin bores
6. Piston hitting the valve
plate
7. Noisy check valve in
compressor system
CorreCtiVe aCtion
1. Reduce air demand or use a compressor with
more capacity.
2. Clean or replace the air filter element.
3. Listen for escaping air. Apply soap solution to
all fittings and connections. Bubbles will appear
at points of leakage. Tighten or replace leaking
fittings or connections. Use pipe thread sealant.
4. Replace any gaskets proven faulty on
inspection.
5. Remove head and inspect for valve breakage,
misaligned valves, damaged valve seats, etc.
Replace defective parts and reassemble.
Caution
unit Care and maintenance. Install a new
head gasket each time the head is removed.
1. Tighten pulley / flywheel clamp bolts and set-
screws.
2. Tighten fasteners.
3. Check for proper oil level; if low, check for
possible damage to bearings. Dirty oil can cause
excessive wear.
4. Replace connecting rod. Maintain oil level and
change oil more frequently.
5. Remove piston assemblies from the compressor
and inspect for excess wear. Replace
excessively worn piston pin or pistons, as
required. Maintain oil level and change oil more
frequently.
6. Remove the compressor head and valve plate
and inspect for carbon deposits or other foreign
matter on top of piston. Replace head and valve
plate using new gasket. See Lubrication section
for recommended oil.
7. Replace check valve.
DanGer
risk of explosion. Do not
disassemble check valve with air
pressure in tank.
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