Komatsu FD25-7:
Automatic transmission Problem

Hello everyone
I have one komatsu FD25-7 forklift and i just had the engine(isuzu c240) overhault and i think that i also have a problem with automatic transmission as when fork lift starts it has no power at all and when time passes about 3-5 minutes it starts to gain power but again i feel it like it drives in higher revs to get moving.so i think that i have a transmission problem.I have removed the torque converters oil pump suction strainer and it was full of red vitton flange glue (propably from previous maintance) ,i cleaned it and changed oil with no noticable change.I didn't find and metal paste on the buttom of transmission.Could anyone help me out what i should look for before removing the engine again?
  • Posted 8 Mar 2020 23:02
  • Discussion started by nikosVats
  • Greece
alla about beekeeping
Showing items 1 - 1 of 1 results.
I have a similar problem with my FD20-6, I also cleaned the strainer but no change. I went on to check the pressures on the torqflow transmission at the forward and reverse ports, I have no pressure other than an intermittent 20psi in reverse at which point the truck does try to move but it is not consistent. I think my oil pump needs replacing. I removed the engine (Isuzu) but I cannot separate the torque converter from the transmission, do you happen to know how the torque converter is removed? Does it just pull off the input shaft? If I can remove the torque converter I can examine the oil pump. Thanks, Bob
  • Posted 7 Sep 2020 21:15
  • Reply by Griff
  • Lancashire, United Kingdom
Gman

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.

Latest job alerts …
Louisville, KY, United States
St. Louis, MO, United States
Evansville, IN, United States
Cincinnati, OH, United States

PREMIUM business

Bolzoni SpA (Group HQ)
Manufacturer of Lift Truck Attachments, Forks and Lift Tables, with the most extensive range in the market.
Movers & Shakers
Bennit Schmieder Bennit Schmieder
President, EP Equipment Europe
Senior vice president human resources, Kalmar
President, Mitsubishi Logisnext Americas
Chief executive officer, Messe Stuttgart India
Mitsubishi FD200
Yokohama, Japan
Used - Sale
Nagano NUL120-6
Yokohama, Japan
Used - Sale

PREMIUM business

Zhejiang UN Forklift Co., Ltd
Manufacturer of IC forklifts, electric forklifts and warehouse equipment.
Global Industry News
edition #1227 - 24 April 2025
It continues to be impossible to ignore the uncertainty surrounding the US administration’s tariffs with the last week's news around how the changing macroeconomic landscape will impact our sector... Continue reading
Fact of the week
In 1903, the first Tour de France was held in Paris. The cycling race had been postponed and prize money boosted after it failed to draw enough competitors. Invented to lift the circulation of newspaper L'Auto, it comprised of six long stages totalling 2,428 kilometres.