JLG 80HX_HX+6_HXER ANSI Service Manual - Manual (Page 54)

SECTION 3 - CHASSIS & TURNTABLE
3-16 – JLG Lift – 3120271
5. Insert dowel pins (17), spring guide (16) and springs
(5,6) in housing (7) as shown in Figure 3-6., Spring
Loading.
6. Position new large diameter return plate (8) in hous-
ing with tab guided by dowel pins (17) until disc
rests on springs (5,6).
STATORS (23) AND FRICTION DISCS (22) SHOULD REMAIN DRY
DURING INSTALLATION. NO OIL RESIDUE SHOULD BE ALLOWED
TO CONTAMINATE DISC SURFACES.
7. Place a new friction disc (22) on shaft (4) until it con-
tacts return plate (8).
8. Add additional new discs (23) and new friction discs
(22) as required to complete assembly.
9. Insert separators (10) in holes of return plate (8).
10. Install new o-ring (19), new back-up ring (18), new o-
ring (21) and new back-up ring (20) on piston (24).
Note order of o-rings and back-up rings. Insert pis-
ton (24) into end cover (13) being careful not to
shear o-rings or back-up rings.
11. Install new case seal (11) in housing (7) then install
bleeder screw (14) in end cover (13).
12. Position end cover (13) on housing (7) aligning
dowel pins (17) with holes in end cover.
13. Install capscrews (12) and tighten evenly to draw
end cover (13) to housing (7). Torque capscrews to
55 ft. lbs. (75 NM).
NOTE: If available a hydraulic press will simplify installation
of end cover on housing. Clamp cover in position
while tightening the capscrews.
14. If hydrostatic bench testing is performed on the
brake assembly, release pressure should not
exceed 2000 psi (137 Bar) unless two additional
bolts are used for supplemental clamping.
Figure 3-6. Spring Loading