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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.
Note: When reading the instructions, refer to Sectional diagram in parts Information Manuals when applicable (see under Related Documentation for
form numbers).
Oiler Adjustment
A Metered amount of oil, carried from the oil chamber to the motor
by live air, lubricates the Vanes (33). The amount of oil admitted to
the air stream is regulated by two Oiler Adjustment Screws (5).
Adjustment is made at the factory and should not be changed unless
lubricating difficulties are experienced. If adjustment becomes
necessary, turn the Oiler Adjustment Screws with a small screwdriver.
Governor Adjustment
(Dwg. TPD497)
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 fit in or on a subassembly
unless the removal of that part is necessary for repairs or
replacement.
4.
Do not disassemble the Impact Wrench unless you have a
complete set of new gaskets and O-rings for replacement.
Disassembly of the Impact Wrench
Never attempt to disassemble a Model 599A1 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.
1. Suspend the Impact Wrench by the Eyebolt (65) in the Back
Head (21) and place a large socket on solid, level footing beneath it.
2. Lower the tool, engaging the square driver in the socket drive
hole. As a precaution, leave the hoist hook attached to the
Eyebolt so that the Impact Wrench cannot tip over.
3. Remove the Hammer Case Bolts (51) and (52). Slowly lift the
Motor Housing (1), with assembled parts, from the Gear Case. If
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.
4. Attach the hoist sling to the planet gear frame assembly and
lift the Gear Case (49) with assembled parts from the Hammer
Case (62). 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.
2
A
WARNING
WARNING
Turning the Screws in reduces the oil flow; backing the Screws
out increases the oil flow.
Two Oiler Felts (6) are located under each Screw. After long usage,
these Felts may become clogged, preventing the passage of oil. If
this happens, remove the Plug and Screws and replace the Felts.
Drawing TPD497 illustrates the sensitive weight-type Governor
which controls the speed of the Multi-Vane motor. It is adjusted at
the factory to produce a socket speed of approximately 295 rpm. It
is seldom necessary to change this adjustment. However, if the free
speed of the square driver is checked with a tachometer and is not
within 5 rpm of the recommended speed of 295 rpm, steps should
be taken to correct it. Screwing the adjusting nut further onto the
governor stem increases the speed; backing the nut off decreases
the speed. One-half turn of the nut will vary the socket speed about
5 rpm.
When installing a new Governor, set the Nut so that dimension "A"
is 2-1/8" (54 mm). This usually produces an allowable speed.
5. Remove the Backhead Cap Screws (24) and Backhead (21). This
will give access to the motor.
Disassembly of Impact Mechanism
1.
Support the Hammer (55) jaw end down, on a press table and
press on the rear face of the Ball Cam (58), telescoping the two
parts against the compression of the Hammer Spring (56) until
the two Cam Balls (59) drop from the holes in the hammer wall.
2.
Release the pressure slowly after removal of the Balls and
withdraw the Ball Cam from the Hammer.
Disassembly of the Motor
Never clamp the Cylinder (26) in a vise.
1.
Lay the motor horizontally on a work bench and unscrew the
governor assembly.
The Rotor (29) and Governor (37) have left-hand threads; turn
the governor assembly clockwise to remove it from the motor
assembly.
2. Insert a 7/16" (11 mm) diameter rod about 8" (203 mm) long into
the rotor bore.
3. Grasp the Cylinder with one hand and sharply strike the rod until
the rotor rear hub is driven from the rear Rotor Bearing (31).
4. Support the front Cylinder End Plate (32) as close to the rotor
body as possible and press the pinion end of the Rotor out of the
front Rotor Bearing.
5. Remove any other motor components which need to be
replaced.
NOTICE
NOTICE
16606006_ed1
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