
Tool will not shut off.
– Throttle valve ‘O’ ring broken or
unseated.
– Throttle valve stem bent or
jammed with dirt particles.
– Replace new ‘O’ rings.
– Lubricate trigger with air tool
lubricating oil. If trigger remains
jammed return to service centre.
Tool runs at normal speed but loses
power under load.
– Motor parts worn.
– Cam clutch worn or sticking due
to lack of lubricant.
– Lubricant clutch housing.
– Check for excess clutch oil.
Clutch cases need only be half
full. Overfilling can cause drag
on high speed clutch parts. A
typical oil, lubricated wrench only
requires 1/2 ounce of clutch oil.
Grease Lubricated: Note:
Heat usually indicates insufficient
grease in chamber. Severe
operating conditions may require
more frequent lubrication.
Drive shank wear.
– Worn sockets or using
conventional chrome plated
sockets.
– For any air tools, do not use
chrome plated conventional
sockets under any
circumstances as this is a highly
dangerous practice. Use only
high quality impact sockets as
listed in the Draper Catalogue.
Chrome plated sockets can
shatter and cause injury.
Sockets will not stay on.
– Worn anvil ring.
– Replace anvil ring.
Motor will not run. Exhaust air flows
freely.
– One or more motor vanes stuck
due to material build up.
– Motor seized due to rust.
– Pour air tool lubricating oil into
air inlet.
– Operate tool in short bursts of
forward and/or reverse rotation
(where applicable).
– Tap motor housing gently with
plastic mallet.
– Disconnect supply, free motor by
rotating drive shank manually.
– If tool remains jammed, return to
service centre.
Tool runs slowly. Air flows slightly
from exhaust.
– Motor parts jammed with dirt
particles.
– Power regulator in closed
position.
– Air flow blocked by dirt.
– Check air inlet filter for blockage.
– Pour air tool lubricating oil into
air inlet as per instructions.
– Operate tool in short bursts,
quickly reversing rotation back
and forth.
Problems
Possible cause
Required action
We recommend the
use of Draper Air
Tool Oil:
500ml
Stock No.34681
1Litre
Stock No.34682
250ml
Stock No.34679
11.1 TROUBLESHOOTING GUIDE
11. TROUBLESHOOTING
- 15 -