prime mover smx45 Master Service Manual page 193

Possible Cause
Battery problems
Binding load wheel(s)
Bad drive wheel assembly
Binding brake disk
Binding drive motor
Worn brushes
Bad drive motor (may test ok with no
load, but fail under load)
Truck overloaded or
extreme conditions
Bad transistor controller
Bad wire or connector
Possible Cause
Battery problems
Transistor controller
programming not correct
Bad motor brushes or motor
Bad transistor controller
Possible Cause
Bad wiring in steering control handle
Bad wiring in hydraulic control area
© BT Prime-Mover, Inc.
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7. Slow or no travel (Code C43 (see
controller thermal cutback.)
Verify a correct, fully-charged good battery (24V) is installed in truck.
Make sure load wheels rotate freely, If not repair or replace (see
Jack and block truck (see
down to release brake. Check drive wheel to see if it spins freely. If not, repair or replace (see
page 117.)
Jack and block truck (see
down to release brake. Check brake disk to see if it spins freely. If not, adjust, repair or replace
(see page 111 or
Jack and block truck (see
down to release brake. Check the brake disk to see if it spins freely. Turn main ON/OFF switch
OFF. Remove brake disk and check armature shaft. Remove motor and repair or replace drive unit
or drive motor (see
Inspect brushes (see
Repair or replace drive motor (see
operating in Operate and load truck within specifications (see
Check mounting of transistor controller. Check to make sure transistor controller is secure and in
contact with truck frame (acts as a heatsink.) If transistor controller is mounted correctly, replace
transistor controller.
Jack and block truck (see
attempting travel, measure voltage between B- and transistor controller B+, B- and J5-16. If not
24V, repair or replace wiring.
8. Truck does not accelerate correctly.
Verify a correct, fully-charged good battery (24V) is installed in truck.
or ETAC Verify programming.
With main ON/OFF switch OFF and battery connector disconnect, check drive motor brushes (see
page 90) and motor (see
If all possible causes check out, replace transistor controller.
Wiring System
1. Truck functions partially, some functions do work when
commanded.
With main ON/OFF switch OFF and battery connector disconnect, visually inspect wiring in the
handle where the wiring leaves the handle and over the brake. Repair or replace.
With main ON/OFF switch OFF and battery connector disconnect, visually inspect wiring. Repair or
replace.
Master Service Manual
Version no
Remedy
page 58.) Turn main ON/OFF switch ON. Pull steering control handle
page 58.) Turn main ON/OFF switch ON. Pull steering control handle
page 112.)
page 58.) Turn main ON/OFF switch ON. Pull steering control handle
page 97.)
page 90.)
page 97.)
page
page 58.) With main ON/OFF switch ON and battery connected, while
Remedy
page 97.)
Remedy
2006-12-12
F-code Section
PT S5.0
Electrical Functions
T-code
002 SMX
page 183), Transistor
page 122.)
51.)
C-code
5000
191