Ingersoll-Rand WG068A-F4 manual Lubrication, Disassembly

M35

MAINTENANCE SECTION

41

Always wear eye protection when operating or performing maintenance on this tool.

Always turn off the air supply and disconnect the air supply hose before installing, removing or adjusting any accessory on this tool, or before performing any maintenance on this tool.

2.Unscrew and remove the four Hammer Case Cap Screws (33).

3.While lightly tapping on the end of the Anvil (39) with a plastic hammer, lift off the Hammer Case (3 1) and remove the Hammer Case Gasket (30).

4.Grasp the Hammer Frame (36) and carefully lift off the entire impact mechanism, making certain not to drop the two Hammer Pins (37).

LUBRICATION

Each time a WG068A-F4 Impact Wrench is disassembled for maintenance and repair or replacement of parts, lubricate the tool as follows:

1.Work approximately 12 to 15 cc of IRAX No. 100 Grease into the impact mechanism, particularly around the Hammer Pins (37), Hammer (38), Hammer Frame (36), Anvil (39) and inside the Hammer Case Bushing (32).

2.Work some IRAX No. 100 Grease into the Rear Rotor Bearing (18) and Front Rotor Bearing (27).

3.Inject approximately 4 cc of IRAX No. 100 Grease into the Grease Fitting (12).

4.Wipe a thin film of IRAX No. 50 Oil on the Rotor (2 1), Vanes (22), Reverse Valve (13), Rear End Plate (19), Front End Plate (25) and the bore of the Cylinder (23).

5.Use IRAX No. 50 Oil for lubrication the motor. Inject approximately 1 to 2 cc of oil into the air inlet before attaching the air hose.

DISASSEMBLY

General Instructions

1.Do not disassemble the tool any further than necessary to replace or repair damaged parts.

2.Whenever grasping a tool or part in a vise, always use leather-covered or copper-covered vise jaws to protect the surface of the part and help prevent distortion. This is particularly true of threaded members and housings.

3.Do not remove any part which is a press lit in or on a subassembly unless the removal of that part is necessary for repairs or replacement.

4.Do not disassemble the tool unless you have a complete set of new gaskets and G-rings for replacement.

2.Slide assembled motor out of Motor Housing.

Disassembly of the Impact Wrench

1.Clamp the handle of the tool in leather-covered or copper-covered vise jaws with the square driver upward.

Disassembly of the Impact Mechanism

1.Set the mechanism, driver end up, on the workbench. Using a felt tipped pen, mark one end of the Hammer “?” with the arrow pointing upward.

2.With the mechanism sitting upright on the workbench, slowly rotate the Anvil in a clockwise direction until it comes up solid.

If you continue to rotate the Anvil, it will cam the Hammer out of engagement. Don’t do this; merely rotate the Anvil until it comes up solid.

3.Hold the Hammer Frame (38) firmly and, without disturbing the Hammer, gently lift the Anvil from the Hammer Frame.

4.With the Anvil removed, lift out the two Hammer Pins (37).

The Hammer is now free to slide from the Hammer Frame. Be careful not to drop it.

Disassembly of the Reverse Valve

1.Unscrew the Reverse Valve Knob Screw (16) and remove the Reverse Valve Knob (15).

This Screw is installed with LoctiteB*. You may have to heat the Screw slightly to loosen it.

2.While slowly rotating the Reverse Valve (13), withdraw it from the reverse valve bushing in the Motor Housing. Remove the Housing from the vise.

Disassembly of the Motor

1.Grasp the Motor Retainer (29) and lift it from the Motor Housing (1).

2.Lift the Rear Hammer Frame Washer (35) and the two Motor Clamp Washers (28) from the front of the motor.

3.Grasping the spline of the Rotor (21), carefully lift the assembled motor from the Motor Housing.

*Registered trademark of Loctite Corporation.