JLG M450 ANSI Service Manual - Manual (Page 72)

SECTION 3 - CHASSIS & TURNTABLE
3-32 – JLG Lift – 3121127
3. Press a new dirt and water seal (20) into the housing
(18) outer bearing counterbore. The dirt and water
seal (20) must be pressed in until its’ flange is flush
against the housing.
4. Place housing (18) assembly into a soft jawed vise
with the coupling shaft bore down, clamping against
the mounting flange.
5. Assemble a new backup ring (17), new backup
washer (25) and new seal (16) with the seal lip fac-
ing toward the inside of the motor, into their respec-
tive counterbores in housing (18).
6. Assemble thrust washer (14) then thrust bearing (15)
that was removed from the motor.
NOTE: The motor requires one thrust washer (14) with
thrust bearing (15). The coupling shaft will be seated
directly against the thrust bearing.
7. Apply masking tape around splines or keyway on
shaft (12) to prevent damage to seal.