Raymond® Walkie Pallet Truck Maintenance Manual
Troubleshooting Troubleshooting Flowcharts
T-7-2
No Is B+ present in both cases?
Yes
With key switch OFF and battery disconnected, remove PMC connector from motor controller. Check for continuity and wiring shorts between: PMC-9 and BPMC-14 and BPMC-16 and B+ using wiring diagram (schematic).
No
Yes Turn key switch OFF, jack and block truck. With key switch ON and handle in operating position, measure voltage at B+ of motor controller (with reference to M-) of motor controller with throttle ON.
Go to Chart T-7-3
No
Repair or replace.
Yes
With key switch OFF and battery unplugged, remove connector PMC from motor controller. Measure resistance between PMC-7 to PMC-6 while slowly rotating throttle in both directions. PMT1 can be used here. See PMT section in Troubleshooting
Does resistance increase from 0-6K ohms in each direction?
Are wiring and switch OK?
With key switch OFF and battery disconnected, check for continuity and wiring shorts between: PMC-6 to JP6-4 JP6-4 to VR-2 VR-4 to JP6-5 JP6-5 to PMC-7
Is wiring OK?
Verify the problem still exists. Repeat T7. If you return here, go to General Troubleshooting.
Go to Chart END1
Go to Chart GEN1
No
Repair wires.
Yes
Repair or replace throttle potentiometer assembly. Yes
Go to Chart END 1
1Programmable Maintenance Tool
Go to Chart END 1
T-7-2a.wmf
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PDMM-0100 Issued: 5/21/01
