14
MAINTENANCE SECTION
The Tilt Valve Seat Retainer (25G) must be
properly installed in the groove in the Inlet
Bushing (20). To check for correct installation of
the Retainer, insert a pin into one of the holes in
the Retainer and rotate the Retainer. A correctly
installed Retainer will rotate freely but with some
resistance in the groove of the Inlet Bushing. An
incorrectly installed Retainer will pop out of the
Inlet Bushing when the Retainer is rotated.
Do not use compressed air to check installation of
the Tilt Valve Seat Retainer or Inlet Bushing
Screen unless the entire Inlet Bushing Assembly is
installed in the tool with the Hammer Case
installed and properly secured to the Motor
Housing. Failure to do so could result in injury.
Install the Tilt Valve Seat Retainer.
When re–installing the Inlet Bushing Assembly
(20), pull the Trigger (24) outward and make sure
that the Reverse Button (31) is depressed before
snapping the Inlet Bushing Assembly back into the
Housing.
3.
Install the Inlet Bushing Assembly by pushing it into
the hole in the Housing until you see and hear the tabs
on Inlet Retainer Clip snap into place through the
slots in Housing handle.
The Reverse Button (left) (31) must be pushed in
before the Trigger can be installed. Otherwise, the
Trigger will be damaged during installation.
4.
Install the Trigger by pushing it into the handle until a
click is heard indicating that it is properly engaged.
Assembly of the Motor
When disassembling, assembling or pulling the
Motor, we recommend replacement of the Motor
Gasket (7).
1.
Install the Motor Gasket in the Housing making sure
that the grooves in the tab of the Motor Gasket fit
around ridge in the Housing. Refer to Dwg. TPD1336.
INSTALLATION
OF MOTOR
GASKET
(Dwg. TPD1336)
2.
Install the Rear Rotor Bearing (3A) into the rear of
the Cylinder (1).
3.
Install the Rotor in the Cylinder and secure with the
Rear Rotor Bearing Retainer (6).
4.
Install Vanes (4) in the slots in the Rotor (5).
5.
Install the Front Rotor Bearing (3) into the Front End
Plate (2). Install the Front End Plate on the Cylinder
by pressing on the inner race of the front Rotor
Bearing until the Bearing is seated on the Rotor Shaft.
6.
Install Power Management Dial (34) through the front
of Housing into smaller diameter at rear. Position the
Dial so that the arrow lines up with one of the power
setting indicators. Install the Dial Seal (35) at the
beginning of the same diameter.
7.
Insert the motor assembly into the front of Housing so
that the smaller diameter at the rear of the motor will
seat the Dial Seal when the motor is pushed into it’s
final location.
Assembly of the Impact Mechanism
TOP HAMMER
HALF–ROUND
NOTCH ON RIGHT
BOTTOM HAMMER
HALF–ROUND
NOTCH ON LEFT
(Dwg. TPD1535)
