SECTION 6 - TROUBLESHOOTING
31215825
6-43
6.16 DRIVE SYSTEM TROUBLESHOOTING
Won’t Climb Grade
Overview Of Procedure
The following procedure checks the drive motor and attached components for component failure, misadjustment due to wear.
Check For These Obvious Conditions First:
• Batteries are Fully Charged (24 Volts)
• Speed Control is Set to Maximum
• Is Grade within the Maximum Allowable Specification of 20% Grade
• Does the Travel Surface allow for Proper Drive Wheel Traction
• Is Platform Load within the Maximum Rated Capacity
Machine Drives in Opposite Direction
Table 6-50. Won’t Climb Grade
STEP
ACTION
SPEC
YES
NO
1.
Does machine drive straight on a level surface?
—
Go to Step 2
Refer to Machine
Won’t Drive
Straight
2.
Do the left and right drive motor brakes release properly and allow
the drive wheels to rotate freely?
—
Go to Step 3
Dragging?
Repair, Replace or
Adjust Brakes
3.
Check the amperage output of the on the drive motor leads. They
should not exceed 100 amps while pulling a grade.
—
Controller will
Shut Drive Down
and will flash a 7
LED Code
Go to Step 5
4.
Check the condition of the drive motor brushes.
—
OK, go to Step 6
Worn down,
replace brushes
or drive motor
5.
If all above is OK, Drive motors are working properly. Consult Factory.
—
—
—
Table 6-51. Machine Drive in Opposite Direction
STEP
ACTION
SPEC
YES
NO
1.
At the Traction Control Module, check if the left drive motor power
lead is plugged into the M1 socket.
—
Go to Step 2
Switch the Left
and Right Drive
Motor Power
Leads at the Trac
-
tion Module
2.
Remove the Right Drive Motor power lead at the Traction Control
Module (M2) and check if the WHITE wire is connected to the positive
(+) terminal and the BLACK wire is connected to the negative (–) ter
-
minal. (Reference Figure 6-8., Electrical Diagram (MVL/MSP)
—
Go to Step 3
Rewire as
Necessary
Go
to
Discount-Equipment.com
to
order
your
parts
