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Troubleshooting - Craftsman 875.198641 Owner's Manual

Pneumatic 1/2-inch drive composite impact wrench
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Troubleshooting
Tool runs slowly or will not operate
1. Grit or gum in tool
1. Flush the tool with air tool oil or gum
solvent.
2. No oil in tooI
3. Low air pressure
4. Air hose leaks
5. Pressure drops
6. Worn rotor blade in motor
7. Worn ball bearing in motor
2. Lubricate the tool according to the lubrication
instructions
in this manual.
3. a. Adjust the regulator on the tool to the maxi-
mum setting.
b. Adjust the compressor regulator to tool
maximum of 90 psi.
4.Tighten
and seal hose fittings. If leaks are found
use teflon tape.
5. a. Be sure the hose is the proper size. Long
hoses or tools using large volumes of air may
require a hose with an I.D. of 1/2" or larger
depending on the total length of the hose.
b. Do not use a multiple number of hoses
connected together with quick connect fittings.
This causes additional
pressure
drops and
reduces the tool power. Directly connect the
hoses together.
6. Replace rotor blade.
7. Remove and inspect bearing for rust, dirt and
grit. Replace or clean and grease bearing with
bearing grease.
Moisture blowing out of tool exahust
1. Water in tank
1. Drain tank. (See air compressor
manual). Oil tool
and run until no water is evident. Oil tool again and
run 1-2 seconds.
(5)

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