TCM FHG18T3:
Transmission fault on a TCM FHG18T3

Hello,

I have a transmission fault on a TCM FHG18T3 where when you engage drive there is about a 3 second delay for drive to engage

I have checked the pressures on this transmission of which i am getting readings of

Charging pump 180psi at tick over and 220psi when the truck is revved up

torque converter 10-15 psi at tick over and 90 psi when revved up

and clutch pack pressure of 100psl once the truck engages drive ( and will drive )

I do not have a workshop manual for this transmission to know what pressures i should have,

So could any one tell me what they should be ?

but given the pressure on the torque converter is only 10-15psi on tick over i am now inclined to think that the fault (the delay on drive ) is due to a faulty converter, Whats your thoughts ?

Regards
John
  • Posted 11 Jul 2019 03:35
  • Discussion started by JohnBon
  • Staffordshire, United Kingdom
Showing items 1 - 2 of 2 results.
Hello John,

I have Service Manual for TCM FHG 18T3 ( Book Version).

Please, send me your Mail.

Regards
  • Posted 15 Jul 2019 22:05
  • Reply by stefano_tcm
  • ITALIA, Italy
TCM Forklift spare parts
tcmricambi@gmail.com
your readings on the torque converter pressures are within specs for a torque converter pressure range.

What i would be checking is the inching adjustments and making sure it is releasing completely, if inching circuit is not fully releasing it can cause a hesitation in the clutches engaging.
Other things to check would be the inching spool/linkage/cable for binding.
Otherwise there may be some issues with the flex rings or something else in the clutch packs. (this would be worse case scenario)
  • Posted 11 Jul 2019 15:26
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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.

Your Focus
Latest job alerts …
Jefferson, WI, United States
Johnston, IA, United States
St. Louis, MO, United States
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025
Global Industry News
edition #1234 - 12 June 2025
As a journalist focussed on the materials handling sector, it is difficult not to notice the regularity of news stories that detail injuries to – or worse still the deaths of – forklift operators... Continue reading
Your Focus
Movers & Shakers
Manojit Acharya Manojit Acharya
APAC vice president, Jungheinrich
Senior VP direct sales and marketing, Daifuku Intralogistics America
Regional sales manager for Malaysia and Singapore, Libiao Robotics
Area sales manager - Spain, Trex Parts
Toyota 8FGC35U-BCS
Flesherton, Ontario, Canada
Used - Sale
JLG 1932R
JLG 1932R 2017
Flesherton, Ontario, Canada
Used - Sale
Upcoming industry events …
June 17-19, 2025 - Rotterdam, Netherlands
August 29, 2025 - Boksburg, South Africa
October 15-17, 2025 - Singapore, Singapore
Global Industry News
edition #1234 - 12 June 2025
As a journalist focussed on the materials handling sector, it is difficult not to notice the regularity of news stories that detail injuries to – or worse still the deaths of – forklift operators... Continue reading
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025