JLG 450AJ Service Manual - Manual (Page 96)

SECTION 3 - TROUBLESHOOTING
3-14 – JLG Lift – 3120869
Machine wanders; steering not firm.
Crossover relief valve set too low or not function-
ing properly. Reset, repair or replace valve as required.
Steer linkages loose. Tighten linkage.
Steer wheel toe-in not set properly. Adjust toe-in for 1/4 inch overall.
Spindle bushings badly worn. Replace bushings.
Table 3-4.Chassis Assembly - Troubleshooting
TROUBLE PROBABLE CAUSE REMEDY