JLG E300 Service Manual - Manual (Page 69)

SECTION 3 - CHASSIS & TURNTABLE
3121253 – JLG Lift – 3-35
NOTE: A polished pattern on the wear plate from rotor rota-
tion is normal.
10. Place rotor set (8) and wear plate (9) on a flat sur-
face and center rotor in stator such that two rotor
lobes (180 degrees apart) and a roller vane center-
line 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 and two sets of
seven vanes as shown, check the rotor lobe to roller
vane clearance at both ends of rotor.
11. 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 perceptible lash (play) should be noted
between mating spline parts. Remove and discard
seal ring (4) from housing (18).
12. Remove thrust bearing (11) from top of coupling
shaft (12). Inspect for wear, brinelling, corrosion and
a full complement of retained rollers.
13. Check exposed portion of coupling shaft (12) to be
sure you have removed all signs of rust and corro-
sion which might prevent its withdrawal through the
seal and bearing. Crocus cloth or fine emery paper
may be used.
14. Remove coupling shaft (12), by pushing on the out-
put end of shaft. Inspect coupling shaft bearing and
seal surfaces for spalling, nicks, grooves, severe
wear or corrosion and discoloration. Inspect for
damaged or worn internal and external splines or