JLG SSV10 Service Manual - Manual (Page 130)

SECTION 6 - TROUBLESHOOTING
6-38 – JLG Lift – 3121187
Noise From Drive Assembly
Overview Of Procedure
The following procedure examines the drive motor assembly weldments attaching the drive motors to the base frame. Also
internal components of the drive motors, gear box and a check of the components between the gear box and the drive
wheels.
Check For These Obvious Conditions First:
• Battery voltage 24 volts. (Fully charge batteries)
• Nothing is lodged between one of the wheels and the base frame.
• A caster wheel on the front of the machine is seized up, creating resistance.
Table 6-48. Noise from Drive Assembly.
STEP ACTION SPEC YES NO
1. Check for the following on the drive assembly, drive attachment
weldment; is bent, has broken welds, or loose hardware.
—
Repair/Replace/
Tighten weldment
Go to Step 2
2. Check for the following on the drive assembly, drive motor hard-
ware; is hardware loose, flange bearing - bad. —
Repair/Replace/
Tighten
Component
Go to Step 3
3. Check the left and right drive motor brakes for loose hardware & not
releasing properly.
—
Tighten or Adjust
per procedure
in this
Service Manual
Go to Step 4
4. Is the electrical signal and amperage draw to the drive motors
equal? Check with machine on level surface.
See Table 6-3.
Recheck Steps
1 thru 5
Go to Step 5
5. Check the drive motor brushes, do they need replaced?
—
Replace per
procedure in this
Service Manual
Go to Step 6
6. Inside the drive motor gear box check if; the drive shaft is exces-
sively loose & condition of drive shaft bearings.
Are any gears broken or gear teeth excessively worn.
—
Repair/Replace gear box
components per procedure in this
Service Manual