14 | IW16 Service Manual
Grease the Impact Mechanism
Before you fully reassemble the tool, you must grease the impact mechanism.
1. Remove hydraulic power from the tool.
2. Thoroughly clean the impact mechanism.
3. Inspect all parts of the impact mechanism for damage. Replace damaged parts before using the tool.
4. Lubricate the inside of the hammer frame, the thrust bearing and thrust races with a STANLEY recommended grease. See the table below.
5. Reassemble the impact mechanism and reattach it to the tool.
6. Apply Loctite 242 on the four cap screws that hold the impact mechanism to the hydraulic motor and torque to 12 Ft. Lbs. (16.2 Nm).
STANLEY Recommended Grease
Energy Release G-200
Kendall Super-Blu L-427
Texaco Starplex 2
Lubrication Engineers Almagard 3752
Mobil Delvac Xreme Service
Adjusting Impact Intensity
The impacting intensity can be changed by adjusting the relief adjustment screw.
Adjusting the Relief Adjustment Screw
1. Remove hydraulic power from the tool.
2. Loosen the hex nut on the relief adjustment screw.
3. Turn the relief adjustment screw clockwise to increase the impact torque
-OR-
counter clockwise to decrease the impact torque.
Do not operate the tool with the relief adjustment
screw more than one turn from the bottom of its travel
or less than three turns from the top of its travel.
Damage to the impact mechanism may result.
4. Tighten the hex nut to prevent the relief adjustment screw from moving.
Relief Adjustment Screw
Hex Nut
Testing the Tool
1. Attach a calibrated flow and pressure gauge to the tool port marked “In”.
2. Connect the tool to the hydraulic power supply.
3. Power up the hydraulic power supply.
4. Use IW16 to tighten a fastener. Watch the flow and pressure gauge and ensure maximum flow and pressure are not exceeded. See “Specifications” on
