Metallisation MK 73, Operating Manual / Spare Parts List

Page: 41 / 64

Page 41 of 64
4.7 The Drive Motor
4.7.1 Dismantling the Drive Motor

Screw the Motor (A) out of the body (left hand thread) using a suitable spanner from the
Toolkit provided (part no. TKG73)
NOTE: Never clamp the motor directly in a vice.

Unscrew the Bevel Pinion (E) from the motor output shaft using a suitable spanner and
Allen key, and then separate the Seal Housing (B) from the Bevel Pinion (E) .

Discard both the inner and outer ‘O’ Rings
(C & D) and inspect Bevel Pinion for wear.
4.7.2 Re-Assembling the Drive Motor

Fit new ‘O’ Rings
(C & D) to both the inner and outer grooves of the Seal Housing (B) .
Lightly grease using Metallisation Grease (part no. 21173) and slide the Seal Housing (B)
onto the boss of the Bevel Pinion (E) .

Screw the Bevel Pinion (E) and Seal Housing (B) onto the Motor Shaft, boss first and lock.

Screw the motor completely into the body (L/H thread) using the appropriate tool, taking
care to avoid damaging the seal ‘O’ Ring.

The Trigger Control (where fitted) should be located towards the front of the pistol (but
where it is comfortable to operate).

Run motor freely and check oil feed in the Air filtration Regulator.
DIAG 17
A
E
B
C
D
WHEN & WHY?
The Drive Motor Assembly should only be dismantled when it is absolutely necessary.
For example:

There is no wire drive.

Strip down of Gearbox indicates there is wear to the Bevel Gear.

There is evidence of air pressurising the Drive box i.e. there is greased pushed out around the Rollers.