JLG M450 ANSI Service Manual - Manual (Page 73)

SECTION 3 - CHASSIS & TURNTABLE
3121127 – JLG Lift – 3-33
8. Be sure that a generous amount of clean corrosion
resistant grease has been applied to the lower
(outer) housing bearing/bushing (19). Install the
coupling shaft (12) into housing (18), seating it
against the thrust bearing (15).
THE OUTER BEARING (19) IS NOT LUBRICATED BY THE SYS-
TEM’S HYDRAULIC FLUID. BE SURE IT IS THOROUGHLY PACKED
WITH THE RECOMMENDED GREASE.
NOTE: The coupling shaft (12) will be flush or just below the
housing wear surface when properly seated while
the coupling shaft (12). The coupling shaft must
rotate smoothly on the thrust bearing package.
9. Apply a small amount of clean grease to a new seal
ring (4) and insert it into the housing (18) seal ring
groove.
NOTE: One or two alignment studs screwed finger tight into
housing (18) bolt holes, approximately 180 degrees
apart, will facilitate the assembly and alignment of
components as required in the following procedures.
The studs can be made by cutting off the heads of
either 3/8-24 UNF 2A or 5/16-24 UNF 2A bolts as
required that are over 0.5 inch (12.7 mm) longer than
the bolts (1) used in the motor.
10. Install drive link (10) the long splined end down into
the coupling shaft (12) and engage the drive link
splines into mesh with the coupling shaft splines.
NOTE: Use any alignment marks put on the coupling shaft
and drive link before disassembly to assemble the
drive link splines in their original position in the mat-
ing coupling shaft splines.