JLG 600A Service And Maintenance Manual page 140

11. Place rotor set (8) and wear plate (9) on a flat surface
and center rotor (8A) in stator (8B) such that two rotor
lobes (180 degrees apart) and a roller vane (8C)
centerline are on the same stator centerline. Check the
rotor lobe to roller vane clearance with a feeler gage at
this common centerline. If there is more than 0.005
inches (0.13 mm) of clearance, replace rotor set.
NOTE: If rotor set (8) has two stator halves (8B & 8D) and two sets
of seven vanes (8C & 8E) as shown in the alternate con-
struction TG rotor set assembly view, check the rotor lobe
to roller vane clearance at both ends of rotor.
12. Remove drive link (10) from coupling shaft (12) if it was
not removed with rotor set and wear plate. Inspect drive
link for cracks and worn or damaged splines. No percep-
tible lash (play) should be noted between mating spline
parts. Remove and discard seal ring (4) from housing
(18).
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SECTION 3 - CHASSIS & TURNTABLE
13. Remove thrust bearing (11) from top of coupling shaft
(12). Inspect for wear, brinelling, corrosion and a full
complement of retained rollers.
14. Check exposed portion of coupling shaft (12) to be sure
you have removed all signs of rust and corrosion which
might prevent its withdrawal through the seal and bear-
ing. Crocus cloth or fine emery paper may be used.
Remove any key (12A), nut (12B), washer (12C), bolt
(12D), lock washer (12E), or retaining ring (12F).
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