JLG 600SC_660SJC Service Manual - Manual (Page 83)

SECTION 4 - CAT CHASSIS (PRIOR TO S/N 0300128000)
3121157 – JLG Lift – 4-21
3. Slide front idler (1) and the hydraulic track adjuster
into the undercarriage frame. The combined weight
of front idler (1) and the hydraulic track adjuster is
approximately 136 kg (300 lb).
4. Connect the track. Refer to Section 4.5, Track. Move
the machine away from the suitable cribbing.
4.9 TRACK ADJUSTER
Removal
Start By:
a. Remove the front idler and the recoil spring.
Refer to Section 4.6, Front Idler and Recoil
Spring.
1. Loosen relief valve (2). Remove piston assembly (1).
2. Remove lip seal (3).