Report this forum post

Okay, this truck has been causing issues for over 4 mechanics now, and has been passed my way. It has been burning out RH drive motor encoders. They might last anywhere from 2 weeks to 2 months. It's currently on it's 7th motor. When testing the encoder outputs, the voltage is around 5.5v on each channel, but when it fails, the voltage drops down to 2-3v and the truck freaks out. However the "input" voltage to the encoder remains a constant 11.2v.

So far, besides motors, the truck also has had a "known good" access3 module installed, and an entirely new wiring harness per NewBremen tech support. Now they want me to install another access3 claiming a bad wiring harness could have damaged the access3 causing the issues. However the LH drive motor has never had an issue, and they both recieve the same "input" voltage but give off different outputs.

Today I installed yet another brand new drive motor assembly, and the output voltage is only putting out 4.6 volts, and should be 5.5v. The LH (good side) motor does put out 5.5v exactly.

So both left and right sides are receiving 11.2v signal but the RH is only giving 4.6 back to the access3 module. Has anyone else in the world had a similar issue. Or anything else that I should check. Tomorrow I plan on switching the input leads between the 2 motors and see if the problems follows, or stays with the same motor.

Any input would be helpful.
  • Posted 14 Feb 2013 09:11
  • By griffman_23
  • joined 5 Aug'09 - 28 messages
  • Michigan, United States
--Just an opinion from some punk ruining the world--

This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.

Indicates mandatory field
Techlift grows with acquisition Drummondville, QC, Canada
Upcoming industry events …
October 14-16, 2025 - Antwerp, Austria
October 15-17, 2025 - Bangkok, Thailand
November 17-19, 2026 - Luanda, Angola
Global Industry News
edition #1251 - 9 October 2025
In this week’s Forkliftaction News , hydrogen power is a theme as we report on the US marking its 10th annual National Hydrogen and Fuel Cell Day, an initiative to promote the benefits of the clean energy source... Continue reading
Fact of the week
Brothers Adolf ("Adi") and Rudolf ("Rudi") Dassler split their shoe company after WWII due to a bitter feud, and established the rival companies of Adidas and Puma. Their personal animosity and business rivalry divided their German hometown Herzogenaurach. The town became known as "the town of bent necks" due to the intense loyalty to each brand.

PREMIUM business

F. Uchiyama
Global exporter of used forklift and construction machinery, servicing over 80 countries.
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY