JLG 600SC_660SJC Service Manual - Manual (Page 45)

SECTION 3 - CHASSIS & TURNTABLE
3121607 – JLG Lift – 3-9
Rollers
Rollers are “lifetime” lubricated and under normal working
conditions no further lubrication is required. Idlers should be
randomly checked while working to protect against
destruction should a seal be damaged.
ROLLER SEALS
USED SEALS WILL MOST LIKELY FAIL SHORTLY AFTER REBUILD. ALWAYS USE
NEW SEALS WHEN REASSEMBLING TRACK ROLLER.
NOTE: Mating surface where seals contact must be dry and clean;
free of dirt, nicks, and burrs.
1. Install O-ring on roller shaft.
2. Install seal group into roller shell seat. Remove plastic
band holding rings together.
3. Press collar on roller shaft and lock in place with dowel.
4. Invert roller assembly and perform steps 1 through 4.
5. Fill roller with lube.
TRACK ROLLER DISASSEMBLY
1. Remove lube fill plug and dump lube into a container.
2. Press dowel pin out of collar.
3. Remove seals and shaft.
4. Press out bushings.
TRACK ROLLER ASSEMBLY
1. Install bushings in roller shell.
2. Install collar to roller shaft.
3. Install dowel pin through collar and shaft.
4. Install O-ring in roller shaft.
5. Install seal group in roller shell seal seat.
6. Insert collar and shaft into shell until collar bottoms to
the seal group.
7. Invert roller 180°.
8. Complete component assembly as in steps 2 through 6.
9. Fill Roller with lube.
BOTTOM TRACK ROLLER INSTALLATION
1. Blow out roller mounting holes With air gun. Wipe
mounting surfaces clean with rag. Threads must be
clean of grease and oil.
2. Apply JLG Thread Locking Compound PN 0100011 to
four bolts. Align roller on frame and secure with four
washers and bolts.
3. Torque bolts to 200 ft-lb +15-0 (280 Nm, +21 -0).
4. Use a low pressure pump with a nozzle that will fit
through idler body fill hole. Fill with SAE 30 or SAE 40 oil
at capacities for your machine.