JLG H340AJ Service And Maintenance Manual page 69

SECTION 3 - CHASSIS & TURNTABLE
8. Be sure that a generous amount of clean corrosion resis-
tant 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 SYSTEM'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.
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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 mating coupling
shaft splines.
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