JLG 3969electric Service Manual User Manual
Page 27
SECTION 2 - PROCEDURES
3120881
– JLG Sizzor –
2-15
Inspection
1.
Inspect the friction plate and the mating surfaces on
the armature and mounting plate for wear and/or
damage.
2.
Examine the compression spring.
3.
Examine the friction plate and the shaft for wear and/
or damage to the spline.
4.
Examine the pole faces of the magnet and the arma-
ture for bruises, swellings or damage. Any bruises,
swellings or damage should be stoned flat.
5.
Examine input and output splines of shaft for wear
and/or damage.
6.
Check ball bearing for axial float and/or wear.
NOTE: It is essential when replacing the friction plate that
spacers are also replaced.
Assembly
1.
Clean all parts thoroughly.
2.
Reverse disassembly procedure above, taking par-
ticular care with the assembly sequence of the fric-
tion plate.
NOTE: Assemble friction plate with two center-punches fac-
ing towards mounting plate.
3.
If a new plate has been fitted, then new spacers will
have to be adjusted for air gap of 0.35 - 0.60 mm
(0.014 - 0.024 in).
4.
After checking air gap, connect power supply.
5.
Switch on power supply and ensure brake fully
releases.
Figure 2-15. Drive Brake Assembly