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WARNING
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 exploded diagrams in Parts Information Manual when applicable (see under Related
Documentation for form numbers).
Changing The Mechanism Fluid
To change the Mechanism Fluid in the Impulse Mechanism,
proceed as follows:
1. Grasp the tool in Copper-covered or Leather- covered vise jaws
with the Angle Housing (69) Upward.
2. Using a Hex Wrench, remove the four Angle Housing Mounting
Screws (89) and Lock washer (90). Lift the assembled Angle
Housing off the Motor Housing (1). Remove the Housing Gasket
(78).
3. Lift the assembled mechanism off the Rotor (22).
4. Using a wrench, rotate the Torque Adjustment Screw (33
or 57) Clockwise untill the Screw stops. Rotate the Screw
Counterclockwise untill it stops or Makes six complete
revolutions.
5. Using a 2.5mm Hex wrench, unscrew and remove the Oil Plug
(59 or 63). Remove the Oil Plug Seal (60 or 64) and Oil Plug Seal
Support (61).
6. With the oil plug openings downward aver a container, rotate the
Drive Shaft (48) to purge the fl uid from the mechanism.
7. For Model 500A, thread the Tee Wrench included with the
Tool Kit ( Part No. 180PQ-99) through the oil plug hole into the
Spring Guide (45) and Pull the Guide toward the output end of
the mechanism untill it stops.
For Model 700A, thread the Tee Wrench included with the
Tool Kit ( Part No. 700PQ-99) through the oil plug hole into the
Spring Guide (45) that is 180° from the Torque Adjustment Screw
(57) and Pull the Guide toward the output end of the mechanism
untill it stops.
NOTICE
Do not substitute any other fl uid.
Failure to use the impulse mechanism fl uid provided could
damage the tool, increase maintenance and decrease
performance. Use only clean fl uid in these tools.
8. Using the syringe and fl uid from the fl uid Replacement Kit (Part
No. EQ106S-K400), fi ll the mechanism with the fl uid furnished
in the Kit untill the fl uid overfl ows the fi ll hole. Model 500A will
require 9 cc of fl uid and Model 700A, 12 cc.
(Refer to Dwg. TPD1265)
(Dwg. TPD1265)
9. Submerge the fi ll opening in the remainder of the fl uid, and using
a wrench, rotate the Drive Shaft to purge any remaining air from
the system.
10. Remove the mechanism from the fl uid and use the Tee Wrench to
push the Spring Guide Assembly slowly downward untill the fl uid
fl ows from the fi ll opening.
11. Thread the Oil Plug with the Oil Plug Seal into the mechanism
until it is snug.
12. Using a 1.5 mm hex wrench, turn the Torque Adjustment Screw
clockwise until it stops. This is the maximum torque position.
13. Wipe the outside of the mechanism dry and clean and remove
the Oil Chamber Plug. Using the syringe, withdraw .2 cc of fl uid
from 500A models and .50 cc of fl uid from 700A models.
14. Install the Oil Chamber Plug and tighten it between
20 and 25 in–lb (2.3 and 2.8 Nm) torque.
15. Install the assembled mechanism on the rotor shaft.
16. Place the new Housing Gasket on the Angle Housing and install
the assembled Angle Housing over the Drive Shaft against the
Housing. Install the four Angle Housing Mounting Screw and
Lock Washers. Tighten each Screws between 45 and 50 in-lb (5.1
and 5.6 Nm) torque.