Stanley ID07 - Operation

ID07 User Manual ◄ 11
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 a󰀨ect 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 ow rate to the tool is too low, the hammer (or impact) speed is reduced. If
the ow is correct, a change in the relief pressure does not a󰀨ect the impact force. Poorly designed hydraulic
circuits can result in lower 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 7/16 to 7/8 inch / 11 to 22 mm
SAE Grade 5 3/8 to 5/8 inch / 9 to 16 mm
SAE Grade 8 3/8 to 9/16 inch / 9 to 4 mm
PREPARATION PROCEDURES
CHECK POWER SOURCE
1. Using a calibrated ow meter and pressure gauge, check that the hydraulic power source develops a ow of
4–12 GPM/15–45 LPM at 2000 psi/140 bar. Proper ow and pressure maintain proper tool speed.
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 - FIG. 2
The ID07 can be con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 screw counter-clockwise until
meeting resistance (from the retaining ring). Turn the
selector 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.
OPERATION
Figure 2 - OC/CC Conguration