JLG 800A_AJ ANSI Service Manual - Manual (Page 135)

SECTION 3 - CHASSIS & TURNTABLE
3120740 – JLG Lift – 3-79
10. Before installing flange and seal assembly over
shaft, place protective sleeve or bullet over shaft.
Then lubricate space between exclusion seal and
pressure seal, as well as lips of both seals.
Install flange. Rotate flange slowly while pushing
down over shaft. Be careful not to invert or damage
seals.
11. After removing bullet, clamp motor in vise as shown
above. Make sure shaft cannot fall out. Install dry
screws and alternately torque them immediately to
250 in/lbs (28 Nm). If you use primer, allow to cure
10 to 15 minutes. Without primer, allow 6 hours cur-
ing time before subjecting to high torque reversals.
On all other applications, you can run motor immedi-
ately.
If you use new screws, make sure they are correct
length: 22 mm (0.875 in.) under head length. See
parts book for correct part number.
GEROTOR END
1. Reposition motor with gerotor end up, then clamp
across ports. Do not clamp on side of housing.
TO AID INSTALLATION OF SEALS, APPLY LIGHT COAT OF CLEAN
PETROLEUM JELLY TO SEALS. DO NOT STRETCH SEALS BEFORE
INSTALLING THEM IN GROOVE.
2. Pour approximately 35 cc of clean hydraulic oil in
output shaft cavity.
3. Install 73 mm (2.875 in.) I.D. seal in housing seal
groove. Avoid twisting seal.
Timing Procedure
a. Install drive. Use felt tip marker to mark or drive
tooth. Align this tooth with timing dot on shaft.
NOTE: If drive is not symmetrical, install larger splined end
into shaft.
b. Install spacer plate.
c. Install 73 mm (2.875 in) I.D. seal in gerotor seal
groove. Carefully place gerotor on spacer plate,
seal side toward spacer plate.
Standard rotation align any star point with tooth marked
on drive (see figure below).