Operation - Stanley ID07 Service Manual

WRENCH TORQUE INFORMATION
FACTORS THAT AFFECT TORQUE
An impact wrench is a rotary hammer that impacts the head
of a bolt or nut. It does not apply a slow steady torque as a
standard torque wrench. Therefore, several factors affect
the result of torque when using impact wrenches:
1. LONG BOLTS. Long bolts having high-friction threads
with lubrication under the bolt head or associated nut can
twist when impacted, then untwist before the next impact.
This will especially happen if there is low friction between
the bolt head or nut and the mating surface.
2. HEAVY, LOOSE OR MULTIPLE ADAPTERS. Heavy,
loose or multiple adapters between the wrench and socket
can dissipate the intensity of the impact to the bolt head or
nut.
3. AMOUNT OF IMPACT. Maximum torque results can be
obtained by allowing continuous impacting of the socket
against the bolt head or nut for at least 10 seconds.
4. HYDRAULIC FLOW RATE. If the fl ow rate to the tool is
too low, the hammer (or impact) speed is reduced. If the
fl ow is correct, a change in the relief pressure does not af-
fect the impact force. Poorly designed hydraulic circuits can
result in lower fl ow rates and reduced impact speeds when
pressure is required during impacting.
BOLT GRADE AND THREAD
RECOMMENDATIONS
Allowable bolt torque is limited by both bolt thread diameter
and grade of steel in the bolt. The ID07 Impact Wrench
is recommended for use on the following bolt grade and
thread sizes:
SAE Grade 2
SAE Grade 5
SAE Grade 8
PREOPERATION PROCEDURES
CHECK POWER SOURCE
1. Using a calibrated fl ow meter and pressure gauge, check
that the hydraulic power source develops a fl ow of 4-12
gpm/15-45 lpm at 2000 psi/140 bar.

OPERATION

7/16 to 7/8 inch / 11 to 22 mm
3/8 to 5/8 inch / 9 to 16 mm
3/8 to 9/16 inch / 9 to 4 mm
2. Make certain that the hydraulic power source is equipped
with a relief valve set to open at 2100 psi/145 bar minimum.
OPEN-CENTER (OC) OR CLOSED-CENTER
(CC) OPERATION
The ID07 can be confi gured to run on OC or CC circuits.
1. Determine the system type.
2. Remove the hex plug (44) from the spring cap.
FOR OPEN-CENTER OPERATION:
Using a 3/16 in. hex, reach through the hole in the spring
cap and turn the selector scew counter-clockwise until
meeting resistance (from the retaining ring). Turn the selec-
tor clockwise and then counter-clockwise to be sure the
selector is being stopped by the retaining ring. Do not force
the selector screw. Open-center operation is now selected.
FOR CLOSED-CENTER OPERATION:
Using a 3/16 in. hex, reach through the hole in the spring
cap and turn the selector screw fully clockwise. When the
selector screw bottoms. Closed-center operation is now
selected.
CAUTION
To prevent damage to the retaining ring, do not attempt
to force the selector screw counter-clockwise beyond
the point of initial resistance.
Reinstall the hex plug. Failure to install the plug may intro-
duce contaminants to the spool bore resulting in replace-
ment of the valve spool and main housing.
CONNECT HOSES
1. Wipe all hose couplers with a clean, lint-free cloth before
making connections.
2. Connect hoses from the hydraulic power source to the
tool fi ttings or quick disconnects. It is good practice to con-
nect the return hose fi rst and disconnect it last to minimize
or eliminate trapped pressure within the wrench.
3. Observe the fl ow indicators stamped on the main body
assembly and the hose couplers to ensure that the fl ow is
in the proper directions. The female couple on the tools "IN"
port is the inlet (pressure) coupler.
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