Filter
Top Products
2 16600983_ed1
WARNING
Always wear eye protection when operating or performing maintenance on this tool.
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
General Instructions
Do not disassemble the tool any further than necessary to replace
or repair damaged parts.
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.
Do not remove any part which is a press t in or on a subassembly
unless the removal of that part is necessary for repairs or
replacement.
Do not disassemble the tool unless you have a complete set of
new gaskets and O-rings for replacement.
Disassembly of the Impact Wrench
WARNING
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
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
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
Short Bolts.
Slowly lift the Motor Housing (1) with assembled parts from
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.
1.
2.
3.
4.
1.
2.
3.
4.
Attach the hoist sling to the planet gear frame assembly and lift
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
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
the grease from the Hammer, Cam Balls (74) and Ball Cam.
Stand the Hammer, jaw end down, on an arbor press table and
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
Cam from the Hammer.
Disassembly of the Motor
Grasp the splined rotor hub in copper-covered vise jaws and
unscrew the Governor Assembly from the Rotor (15).
NOTICE
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.
5.
6.
1.
2.
3.
1.
Assembly
General Instructions
Always press on the inner ring of a ball-type bearing when
installing the bearing on a shaft.
Always press on the outer ring of a ball-type bearing when
pressing the bearing into a bearing recess.
Whenever grasping a tool or part in a vise, always use leather-
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
before installation.
Apply a lm of O-ring lubricant to all O-rings before nal
assembly.
Assembly of the Motor
Slip the Front End Plate (14), crescent grooved side rst, onto the
rotor front hub.
Place the Front Rotor Bearing (13), shielded side rst, over the
hub.
Slide a sleeve that will contact only the bearing inner ring over
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).
1.
2.
3.
4.
5.
1.
2.
3.
Grasp the splined hub in copper-covered vise jaws, positioning
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.
NOTICE
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.
4.