JLG 600SC_660SJC Service Manual - Manual (Page 91)

SECTION 4 - CAT CHASSIS (PRIOR TO S/N 0300128000)
3121157 – JLG Lift – 4-29
LOOSENING THE TRACK
1. Loosen relief valve (2) carefully until the track begins
to loosen. One turn should be the maximum.
2. Tighten relief valve (2) to 34 ± 5 Nm (25 ± 4 lb ft)
when the desired track tension is reached.
3. Operate the machine back and forth in order to
equalize the pressure.
4. Check the amount of sag. Adjust the track, as
needed.
Track Adjustment - Inspect
Check the track adjustment. Check the track for wear and
for excessive dirt buildup.
If the track appears to be too tight or too loose, readjust as
necessary.
GREASE FITTING RELIEF VALVE