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Troubleshooting - Craftsman 875.191170 Owner's Manual

Pneumatic 3/8" drive ratchet 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 tool
3. Low air pressure
4. Air hose leaks
5. Pressure drops
6. Worn rotor blade in motor
7. Worn ball bearing
2. Lubricate the tool according to the lubrication
instructions
in this manual
3. Adjust the compressor
regulator to tool maxi-
mum 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
in motor
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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