11 base frame components troubleshooting, Caster wheels not operating freely, Check for these obvious conditions first – JLG 20VP (3120728) Service Manual User Manual

Page 102: Is machine operating on a smooth, level surface, Table 3-32. caster wheels not operating freely, Pot hole protection (php) bars will not set, Base frame components troubleshooting -42, Caster wheels not operating freely -42, Pot hole protection (php) bars will not set -42

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SECTION 3 - TROUBLESHOOTING

3-42

– JLG Lift –

3120728

3.11 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 Set

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 3-32. 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 toStep 3

Lubricate or

Replace Wheel

3.

Is debris stuck in the plastic wheel?

Remove Debris or

Replace Wheel

Table 3-33. Pot Hole Protection (PHP) Bars Will Not Set.

STEP

ACTION

SPEC

YES

NO

1.

Check the actuator cables for adjustment or damage.

Adjust or Replace

Go to Step 2

2.

Check the PHP limit switch(s) at both sides of the machine for dam-
age, adjustment and for continuity through switch to ground when
bars are down.

Replace, Adjust

or Repair Wiring

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