Gradall LOED 534A Service Manual - Manual (Page 69)

SEAL REPLACEMENT INSTRUCTIONS
SPM20
Stand the motor on end, shaft up.
Use a brush and solvent and wash
the flange end thoroughly. Dry it
with compressed air or by thorough
wiping with a clean, dry rag. This
action will help to prevent foreign
material from entering the motor.
Loosen and remove nuts and washers
holding the flange plate onto the
motor body. Lift the flange up and
off the shaft. Remove the o-ring
from its groove. (Fig. 108).
Lay the flange on a smooth, clean
surface and remove the snap ring
with snap ring pliers.
Turn the plate over and lay it down
on the open jaws of a vise or other
appropriate support. Use a punch
and mallet (or a light hammer) and
tap the old seal out of the bore.
USE EXTREME CARE IN THIS PROCEDURE.
Do not mar the machined surfaces of
the flange. Move the punch around
the seal so that it produces even
movement of the seal down the bore.
(Fig. 109)
After the seal has been removed,
wash the flange plate in clean
solvent, dry it, grooves which are
deep enough to preclude its re-use.
Polish the bore with only number
400 Emery Cloth.
Wash and dry the bore again and
place the flange between the open
jaws of a vise. With the back of
the flange facing the stationary
jaw, place a clean, smooth block of
wood between the jaw and the flange
to protect the machined surfaces
(Fig.110) 6.
5.
3.
4.
1.
2.
69
FIGURE 108
FIGURE 109