Appendix B Troubleshooting - WORKMASTER GO-A8-PW Operator's Manual

APPENDIX B: TROUBLESHOOTING
TROUBLE
Tool runs slowly or not at all.
Air flows only slightly from
exhaust.
Tool runs and impacts but exhibits
lack of power (will not open gates
that it previously would)
Drive Fittings will not stay on.
Premature Square Drive wear.
Gate Opener gradually losing
power but still runs at full free
speed.
Gate Opener will not shut-off.
Impactor housing bolts become
loose.
PROBABLE CAUSE
• Airflow blocked by
accumulation of dirt.
• Motor parts jammed with
dirt particles.
• Air is escaping through
housing connection that
may have vibrated loose.
• Back head gasket (See
APPENDIX A, Exploded
View) broken through.
• Shank pin w/O-Ring is not
being used to secure Drive
Fitting.
• Drive Fitting sockets worn.
• Internal parts are worn or
sticking due to lack of
lubricant.
• Throttle Trigger stuck or
bent.
• Throttle Valve Assembly
broken or out of position.
• Vibration from impacting.
B - 1
RECOMMENDED ACTION
1. Check that all housing bolts are tight.
If not, apply Loc-Tite and retighten.
2. Pour liberal amount of air tool oil into
air inlet.
3. Operate tool in short bursts – quickly
reversing rotation back and forth.
4. Repeat as needed.
5. Tap motor housing lightly with
soft-faced mallet.
6. Disconnect air supply – then attempt
to free motor by rotating drive
shank manually.
1. Replace Gasket.
1. Replace Shank pin and O-Ring
(See SECTION XVI).
1. Replace worn Drive Fitting.
(See SECTION XVI).
OIL LUBED:
1. Check in-line Lubricator sight glass
for presence of air motor oil.
GREASE LUBED:
NOTE: Vibration and heat usually indicate
insufficient grease in the Hammer Case
Assembly. The average greasing interval is
six months. Severe operating conditions
may require more frequent lubrication.
1. Check for excess grease by rotating
Square Drive by hand. It should turn
freely. Excess grease is usually
expelled automatically.
2. Disassembly is required for greasing.
(See Disassembly Instructions).
1. Lubricate with air motor oil and
operate trigger briskly.
2. Remove Throttle Valve Assembly and
install new valve body assembly.
1. Loctite the bolts and retighten.