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8 1/2-Inch Heavy Duty Impact Wrench Operator's Manual
Maintenance
LUBRICATION:
An automatic in-line filter-regulator-lubricator is recommended as it increases tool life
and keeps the tool in sustained operation. The in-line lubricator should be regularly
checked and filled with air tool oil. Proper adjustment of the in-line lubricator is
performed by placing a sheet of paper next to the exhaust ports and holding the throttle
open approximately 30 seconds. The lubricator is properly set when a light stain of oil
collects on the paper. Excessive amounts of oil should be avoided.
The oil reservoir in the anvil housing should be checked every 40 hours of operation.
Remove the oil plug from the housing and hold tool so the oil port is lower than the
anvil housing. Drain oil. Measure and refill with approximately 1 oz. (30 ml) of John
Deere AT-4003 oil. Never overfill the anvil mechanism or excessive pressure will be
created reducing tool speed and power. If the tool becomes sluggish after adding oil,
remove a small amount of oil and check performance again.
In the event that it becomes necessary to store the tool for an extended period of time
(overnight, weekend, etc.), it should receive a generous amount of lubrication at that
time. The tool should be run for approximately 30 seconds to ensure oil has been
evenly distributed throughout the tool. The tool should be stored in a clean and dry
environment.
Recommended lubricants: Use John Deere AT-4003 air tool oil or any other high
grade turbine oil containing moisture absorbent, rust inhibitors, metal wetting agents
and an EP (extreme pressure) additive.
Operation
PRE-OPERATION:
Before the tool is connected to the air supply, clear the air hose of accumulated dust
and moisture. Before removing a tool for service or changing sockets, make sure the
air line is shut-off and drained of air. This will prevent the tool from operating if the
throttle is accidentally engaged.
OPERATION:
Impact wrench has a built-in power regulator, which can be adjusted by turning the
valve counter-clockwise to increase and clockwise to decrease. The numbers on the
dial are only for reference and do not denote a specific power output.
Once a bolt or fastener is seated, impacting for longer than five seconds will cause
excessive wear and damage to the impacting mechanism. If it takes longer than five
seconds to tighten your bolt or fastener, we recommend the use of a larger size
impact wrench.
CAUTION: ONLY USE SOCKETS DESIGNED FOR IMPACT
TOOLS. USING HAND TOOL SOCKETS CAN BE
HAZARDOUS AND MAY RESULT IN PERSONAL
INJURY. ALWAYSCHECK ACCESSORIES FOR
WEAR, CRACKS AND OTHER DEFECTS BEFORE
USE.
THE DESIGN OF THIS TOOL REQUIRES THAT
EXTRA CARE MUST BE TAKEN WHEN USING THE
RATCHET IN TIGHT AREAS. HANDS AND FINGERS
SHOULD NOT BE HELD BETWEEN TOOL AND
WORK SURFACE. PERSONAL INJURY MAY
RESULT.