JLG 600SC_660SJC Service Manual - Manual (Page 70)

SECTION 4 - CAT CHASSIS (PRIOR TO S/N 0300128000)
4-8 – JLG Lift – 3121157
4.3 TRACK CARRIER ROLLER
Removal
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.
1. Start the engine. Park the machine on a hard, level
surface. Shut off the engine.
2. Release the tension on the track. Refer to Section
4.12, Track Adjustment.
3. Loosen bolt (1) that holds track carrier roller (2) to
the mounting bracket on the undercarriage frame.
4. Use suitable cribbing and Tooling (A) in order to lift
the track from track carrier roller (2). Remove track
carrier roller (2). The weight of track carrier roller (2)
is approximately 14 kg (30 lb).
Installation
1. Be sure that the shaft of the track carrier roller and
the bore in the mounting bracket on the undercar-
riage frame are clean and free of dirt.
Table 4-2. Track Carrier Roller Required Tools -
Removal
Required Tools
Tool Part Number Part Description Qty.
A 8T-5255 Hydraulic Jack 1
Table 4-3. Track Carrier Roller Required Tools -
Installation
Required Tools
Tool Part Number Part Description Qty.
A 8T-5255 Hydraulic Jack 1