TCM FVB20H4 Zero Drive - Maintenance & Troubleshooting discussion in Forkliftaction's forums

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TCM FVB20H4 Zero Drive

Hi,

I am working on a TCM 4Series Old forklift. Problem is Zero Drive. Tech worked before messed up the wiring and logic board. Following the color codes we brought the wiring to original shape. now steering motor works through card, forward and reverse contactors meet upon gear selection but nothing from accelerator. There are voltages on accelerator, output voltage change if we press the pedal from 18 V to 16 Volt. I am bit confused in Thyristor unit wiring. If any anyone have a FVB20H4 series forklift operational, please contact me. Just need a control panel picture to verify the connections. or any help for wiring diagram.

Thanks Ahead.

Addy

Posted 21 Nov 2013 02:18
By Addy_MHE
joined 9 Jul'13 - 160 messages
Sindh, Pakistan

Work Until IDOLS become your RIVALS.

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Hi Addy,
How old do you think this truck is, can you tell us what system your truck runs on, is it Sevcon, GEC, Cableform, or some other system if you can tell us I think more of us may be able to advise on a solution to your problem.

Regards Titus

Posted 21 Nov 2013 07:46
By Titus
joined 6 Jul'10 - 185 messages
North Yorkshire, United Kingdom

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