JLG 600SC_660SJC Service Manual - Manual (Page 153)

SECTION 6 - TURNTABLE
3121157 – JLG Lift – 6-7
Assembly
NOTE: Lubricate all seals and o-rings with clean hydraulic
oil prior to assembly.
1. Press new rotary seal (1) into housing (52). Note the
direction of seal.
2. Install new bearing (2) on shaft (51).
3. Install shaft assembly and retaining ring (3) into
housing (52).
4. Install dowel pins (15), spring retainer (55), and
springs (5 & 6) into housing (52).
NOTE: Be sure to use the same number of springs and
spring pattern as recorded during disassembly.
5. Position new large diameter return plate (8) in hous-
ing with tabs guided by dowel pins (15) until disc
rests on springs (5 & 6).
NOTE: Discs (21 & 8) and friction discs (20) should remain
dry during installation. Oil will contaminate disc sur-
faces.
6. Place new disc (20) on shaft (51) until it contacts
return plate (8).
7. Add additional discs (21) as required to complete
assembly.
8. Insert separators (10) in holes of return plate (8).
9. Install new o-ring (17), new back-up ring (16), new
o-ring (19) and new back-up ring (18) on piston (22).
Insert piston (22) into end cover (13), being careful
not to shear o-rings or back-up rings.
10. Install new case seal (11) in housing (52), then
install bleeder screw (14) in end cover.
11. Position end cover (13) on housing (52), aligning
dowel pins (15) with holes in end cover.
12. Insert capscrews (12) and tighten evenly to draw
end cover (13) to housing (52). Torque capscrews to
55 ft. lbs. (75 Nm).
6.4 GENERATOR
Every 250 hours
Every 250 hours of operation, check the drive belt for
proper tension.
Every 500 hours
Every 500 hours of operation, service the generator
brushes and slip rings. Hostile environments may require
more frequent service.
Every 500 hours of service, blow out the inside of the gen-
erator. If operating in a hostile environment, clean
monthly.
1/2 in.
(13 mm)