Ingersoll-Rand 588A1 User Manual

16600983

October 2007

Air Impact Wrench

588A1

Maintenance Information

Edition 1

Save These Instructions

2 16600983_ed1

WARNING

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

WARNING

NOTICE

Always turn o 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.

Note: When reading the instructions, refer to exploded diagrams in parts Information Manuals when applicable (see under Related Documentation

for form numbers).

Disassembly

Attach the hoist sling to the planet gear frame assembly and lift

General Instructions

Do not disassemble the tool any further than necessary to replace

1. or repair damaged parts. Whenever grasping a tool or part in a vise, always use leather-

2. 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. Do not remove any part which is a press t in or on a subassembly

3. unless the removal of that part is necessary for repairs or replacement. Do not disassemble the tool unless you have a complete set of

4. new gaskets and O-rings for replacement.

Disassembly of the Impact Wrench

Never attempt to disassemble a Model 588A1 or 588A1-EU Impact Wrench without a hoist, block and tackle, or other lifting device. The complete Impact Wrench and its major assemblies are too heavy to be manually handled. Follow the recommended procedure for disassembly below.

Suspend the Impact Wrench by the Vertical Hanger (36) in the

1. Back Head (22) and place a large socket on solid, level footing beneath it. Lower the tool, engaging the square driver in the socket drive

2. hole. As a safety measure, leave the hoist hook attached to the Eyebolt so that the Tool cannot tip over. Remove the Hammer Case Long Bolts (11) and Hammer Case

3. Short Bolts. Slowly lift the Motor Housing (1) with assembled parts from

4. the Gear Case (50). 11 the Motor Housing and Gear Case fail to separate after raising the Motor Housing about 1/2” (12 mm), lightly strike the Gear Case with a soft hammer to jar it loose.

5. the Gear Case with assembled parts from the Hammer Case (82). If the Gear Case and Hammer Case fail to separate after raising the Gear Case about 1/2” (12 mm), lightly strike the hammer case bosses a few downward blows with a soft hammer. Remove the Backhead Long Cap Screws (25), Backhead Short Cap

6. Screws (26) and Backhead (22). This will give access to the motor.

Disassembly of the Impact Mechanism

Before removing the Ball Cam (75) from the Hammer (77), clean

1. the grease from the Hammer, Cam Balls (74) and Ball Cam. Stand the Hammer, jaw end down, on an arbor press table and

2. press on the face of the Ball Cam, telescoping it into the hammer bore against the compression of the Hammer Spring (76) until a Cam Ball drops from each of the two holes in the hammer wall. Slowly ease the pressure on the Ball Cam and withdraw the Ball

3. Cam from the Hammer.

Disassembly of the Motor

Grasp the splined rotor hub in copper-covered vise jaws and

1. unscrew the Governor Assembly from the Rotor (15).

This is left-hand thread; turn clockwise to remove.

2. Grasp the Cylinder (19) in one hand; never clamp it in a vise.

Insert a 5/16” (7 mm) diameter rod about 6” (150 mm) long into the rotor bore and drive on the rod until the rear rotor hub is driven out of the Rear Rotor Bearing (21), freeing the Rear End Plate (20), Cylinder and Vanes (18).

3. Support the Front End Plate (14) as close to the Rotor as possible

and press on the pinion face to remove the Front Rotor

Bearing (13) from the rotor hub.

Assembly

Grasp the splined hub in copper-covered vise jaws, positioning

General Instructions

Always press on the inner ring of a ball-type bearing when

1. installing the bearing on a shaft. Always press on the outer ring of a ball-type bearing when

2. pressing the bearing into a bearing recess. Whenever grasping a tool or part in a vise, always use leather-

3. covered or copper-covered vise jaws. Take extra care with threaded parts and housings. Always clean every part and wipe every part with a thin lm of oil

4. before installation. Apply a lm of O-ring lubricant to all O-rings before nal

5. assembly.

Assembly of the Motor

Slip the Front End Plate (14), crescent grooved side rst, onto the

1. rotor front hub. Place the Front Rotor Bearing (13), shielded side rst, over the

2. hub. Slide a sleeve that will contact only the bearing inner ring over

3. the hub and press the Bearing onto the rotor hub until only running clearance remains between the faces of the End Plate and Rotor (15).

4. the Rotor upright. Place a Vane (18) in each vane slot in the Rotor; then place the Cylinder (19) over the Rotor and onto the End Plate.

Before proceeding, make sure the Cylinder is properly installed.

Check Cylinder installation as follows: Note that there are two 3/4” (19 mm) holes, one in each of the two ats running lengthwise on the Cylinder One of the holes is located about midway between the cylinder ends, while the other is located relatively close to one end. The hole nearer the end must be at the top or farthest from the splined rotor hub.

5. With the Cylinder properly installed, continue the assembly by

sliding the Rotor Bearing Spacer (17), internally-chamfered end

rst, onto the rear rotor hub. Press the Rear Rotor Bearing (21), shielded side rst, into the recess in the Rear End Plate (20) with

an arbor that will contact only the bearing outer ring.

6. Press the End Plate and Bearing assembly onto the rotor hub

with an arbor that will contact only the bearing inner ring. See Governor Adjustment. Then thread the Governor Assembly tightly into the Rotor.

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