Discussion:
Very limit movement, forward & reverse.

Hi all.

Toyota 7FBMF40 - 11696

Changed the encoder on the drive motor of this forklift late last year for a customer. The forklift has worked 61 hours since then and I got a call from the owner this morning to tell me that the forklift is doing the exact same thing as before.

No fault displayed, select either forward or reverse and the forklift barely creeps in either direction, with a slightly jerking movement.

The battery pack was removed, stripped, cleaned and rebuilt, to eliminate leakages to the chassis, at the same time that the encoder was changed.

Customer is fastidious about maintaining the condition of the battery, so it is still spotless and dry, so I don't think a voltage leak from the pack is the problem.

Can anyone shed some light on what the issue may be?

I know that the encoders are a weak point on the AC forklifts (this truck has already had 2 replaced on the drive motor and one on the hydraulic motor) but surely you could expect more than 60 hours work from a genuine encoder bearing?
  • Posted 23 Feb 2018 22:50
  • By TheDamo
  • joined 23 Feb'18 - 11 messages
  • Offaly, Ireland
Best regards,
Damien.
Showing items 1 - 1 of 1 results.
I've only ever replaced one encoder bearing on a 7FBMF & that was due to the wire being damaged where the bearing spun in the housing.

You 100% sure it's the encoder bearing?

Parking brake release cylinder not mechanically stuck on? There is a emergency manual release on the end of the cylinder.

Be warned that jacking both front wheels clear of the floor will allow the front wheels to rotate even with the parking brake applied! A quirk of the 7FBMF.
  • Posted 25 Feb 2018 22:56
  • By Forkingabout
  • joined 31 Mar'11 - 862 messages
  • england, United Kingdom

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Latest job alerts …
Evansville, IN, United States
Daleville, IN, United States
St. Louis, MO, United States
Uxbridge, Canada
Toyota 8FGCU25
Flesherton, Ontario, Canada
Used - Sale
Terberg YT182
Balling, Denmark
Used - Sale
Fact of the week
Sourdough bread contains Lactobacillus reuteri, a probiotic bacteria. During pregnancy and breastfeeding, these bacteria can travel from the mother's colon to her breast tissue and be passed to the infant through breast milk. It offers various health benefits, including potential protection against breast cancer.
Toplift Ferrari TFC36-48
Stoney Creek, Ontario, Canada
Used - Sale
USD1
Aichi RX07B
Yokohama, Japan
Used - Sale
Upcoming industry events …
July 9-10, 2025 - Birmingham, United Kingdom
October 21-23, 2025 - Panama City, Panama
Global Industry News
edition #1236 - 26 June 2025
As June comes to a close, the month when our sector recognises National Forklift Safety Day , the United Kingdom’s Association of Industrial Truck Trainers (AITT) has issued a timely reminder of the need to ensure any staff training is fully accredited... Continue reading
Fact of the week
Sourdough bread contains Lactobacillus reuteri, a probiotic bacteria. During pregnancy and breastfeeding, these bacteria can travel from the mother's colon to her breast tissue and be passed to the infant through breast milk. It offers various health benefits, including potential protection against breast cancer.