Grizzly T21888 - Manual (Page 19)

model t21888 (mfg. since 2/10) - 17
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symptom possible cause possible solution
Air is dirty or has exces-
sive moisture. 1. tank is not drained.
2. delivery pipes are dirty.
1. open drain valve and
make certain all the water
is drained out.
2. remove delivery pipes,
clean out and replace.
Air tools have oily dis-
charge. 1. Compressor tank need
draining.
2. Compressor crankcase is
over full with oil.
3. in-line oiler is out of
adjustment (if used).
4. in-line filter is damaged
or missing (if used).
5. incorrect viscosity of oil
in the crankcase.
6. Compressor is at fault.
1. drain compressor tank
( page 14).
2. drain and return oil level
to normal ( page 8).
3. Adjust in-line oiler drip
ratio or use correct vis-
cosity oil for in-line oiler.
4. replace filter or in-line
filter assembly.
5. Crankcase oil is too light,
replace with actual com-
pressor oil.
6. Worn compressor piston,
rings, or valves. rebuild
or replace compressor.
Air tools have watery
discharge or get cold
and freeze up with ice
during use. 1. Compressor tank needs
draining.
2. Ambient environment has
too much humidity.
3. in-line water separator is
full (if used).
1. drain compressor tank
( page 14).
2. install in-line air dryer
and water separator.
3. drain water separator.
Compressor does not
build air pressure, or
does not reach full pres-
sure. 1. Air leaks in tanks or deliv-
ery pipes.
2. drain valve open.
3. Air filter clogged.
4. leaking check valve.
5. reed valves not sealing.
6. head gasket or valve
body gasket leaking.
7. Worn rings.
8. Broken crank shaft or
connecting rod.
1. Check air tanks, pipes
and all connections for
leaks.
2. Close drain valve.
3. inspect and clean air fil-
ter.
4. repair the check valve
( page 18).
5. remove cylinder head
and replace reed valves.
6. remove head and
replace gaskets.
7. inspect and replace pis-
ton rings.
8. replace or rebuild com-
pressor.