Service Manual

SECTION 6 - TROUBLESHOOTING
6-44 – JLG Lift – 3121231
6.15 BASE FRAME COMPONENTS TROUBLESHOOTING
Caster Wheels Not Operating Freely
Check For These Obvious Conditions First:
• Is machine operating on a smooth, level surface?
Pot Hole Protection (PHP) Bars will not Lower
Check For These Obvious Conditions First:
• Obstruction under pot hole bar on either side of machine.
• Obstruction around the actuator assembly at the base of the mast.
Table 6-50. Caster Wheels Not Operating Freely.
STEP ACTION SPEC YES NO
1. Is the caster rotating freely? — Go to Step 2 Lubricate or
Replace Caster
Housing
2. Is the wheel spinning freely? — Go to Step 3 Lubricate or
Replace Wheel
3. Is debris stuck in the rubber wheel? — Remove Debris or
Replace Wheel
—
Table 6-51. Pot Hole Protection (PHP) Bars will not Lower.
STEP ACTION SPEC YES NO
1. Check the actuator assembly and cables for adjustment or damage. — Adjust or Replace Consult Factory