24
Service and Repair Manual
Model 900/950/990
ASSEMBLY - 900/950
Assembling
the armature
(All models)
Note:
In the assembly instructions numbers starting
200 are Model 900, numbers starting with 300
are Model 950, numbers starting with 400 are
Model 990, numbers starting with 500 are Model
900M in both text and illustrations.
1.
Insert, into the pinion bearing cartridge (175),
bearing (141) and secure with clip (179).
2.
Fit the pinion bearing cartridge assembly to the
armature shaft with the assembly against the
shoulder of the shaft.
3.
Screw the pinion (145) onto the armature shaft.
Fit the pinion service tool to the pinion.
CAUTIONS:
:
a. During the following operation take care to
ensure the fan (138) is not damaged by the
vice jaws.
b. Failure to tighten the pinion to the correct
torque could result in damage to the hammer
gear mechanism.
4.
Mount the armature assembly and pinion in a
vice, between two pieces of wood, with the pinion
nut sitting on the bottom of the vice slide.
Tighten the pinion nut (145) to 20 Nm.
Field coil switch leads
151
Armature
assembly
1.
Mount the motor case (149) in a vice, using soft
metal jaws, and insert the assembled armature
into the motor case.
2.
Align the holes in the pinion bearing cartridge
and secure with the two screws (151).
3.
Insert the field coil (135) into the insulating liner
(136).
Note:
If the field coil is fitted with inductors these
should be placed in the flat section between
the coil and the liner.
4.
Insert the assembled field coil into the motor case
(149) until the top of the liner is level with the
step in the motor case.
5.
Feed the two switch leads through the holes in
the liner into the switch box housing.
Assembling
the motor
(All models)
149
136
135
Fig. 23
Fig. 24
145
137
175
138
141
179
Summary of Contents for 900
Page 1: ......
