JLG 600SC_660SJC Service Manual - Manual (Page 71)

SECTION 4 - CAT CHASSIS (PRIOR TO S/N 0300128000)
3121157 – JLG Lift – 4-9
2. Position track carrier roller (2) in the mounting
bracket. The weight of track carrier roller (2) is
approximately 14 kg (30 lb). Adjust track carrier
roller (2) until Dimension (B) is achieved. Dimension
(B) is 4.5 ± 0.5 mm (0.18 ± 0.02 inch).
3. After adjusting the position of the carrier roller in the
mounting bracket, tighten bolt (1).
4. Be sure that the carrier roller rotates smoothly by
hand. Slowly lower the track assembly to track car-
rier roller (2) with Tooling (A).
5. Tighten the tension of the track. Refer to Section
4.12, Track Adjustment.
4.4 TRACK ROLLER
Removal
NOTE: There is a track guide on each side of the machine.
The procedure that follows removes the track roller
and the track guide.
1. Start the engine. Park the machine on a hard, level
surface. Stop the engine.
PERSONAL INJURY OR DEATH CAN RESULT FROM GREASE AND
OIL COMING OUT OF THE RELIEF VALVE.
GREASE AND OIL ARE UNDER HIGH PRESSURE COMING OUT OF
THE RELIEF VALVE AND CAN PENETRATE THE BODY.
DO NOT WATCH THE RELIEF VALVE TO SEE IF GREASE IS
ESCAPING. WATCH THE TRACK OR TRACK ADJUSTMENT CYLIN-
DER TO SEE IF THE TRACK IS BEING LOOSENED.
MAKE SURE THE VENT HOLES ARE CLEAN BEFORE THE TENSION
IS RELEASED ON THE TRACK.
2. Release the tension on the track. Refer to the Sec-
tion 4.12, Track Adjustment.
Table 4-4. Track Roller Required Tools - Removal
Required Tools
Tool Part Number Part Description Qty.
A 8S-7611 Tube Assembly 2
8S-7615 Pin 2
8S-7640 Stand 2
B 183-4797 Track Roller Lifting Fork 1