Ford and Volkswagen MPV Forums

Small MPVs -- Ford C-Max / Ford B-Max / VW Touran: => Ford C-Max / B-Max => Topic started by: paul1966 on May 13, 2018, 06:57:49 PM

Title: correct gearbox oil for MTX75 box
Post by: paul1966 on May 13, 2018, 06:57:49 PM
i am trying to cure very knotcy gear selection on my c-max 1.8tdci, i changed the box but even with a different box its still very knotchy in all gears and fells no different, i am wondering if there is a better gear oil that may help. i filled the box with castrol systrans multivehicle 75w-90, this meets ford WSD-M2C200-C. i have read that the MTX75 box can be fussy as to what gear oil you put in it. any suggestions?
Title: Re: correct gearbox oil for MTX75 box
Post by: johnnyroper on May 13, 2018, 09:14:03 PM
Fuchs Titan sintofluid is very good gear oil if it meets the specs?
Title: Re: correct gearbox oil for MTX75 box
Post by: mike wilson on May 16, 2018, 11:54:00 AM
http://www.fordwiki.co.uk/index.php?title=MTX-75_Oil_Change
Title: Re: correct gearbox oil for MTX75 box
Post by: paul1966 on May 16, 2018, 12:41:29 PM
i have the latest spec according to the wiki article. i am still not convinced its not the cables even though with them detached from the box they move freely, only one cable is adjustable at the box so maybe you have to get that just right? 
Title: Re: correct gearbox oil for MTX75 box
Post by: johnnyroper on May 16, 2018, 04:40:05 PM
Very hard to tell with cable disconnected off the box as like you say it could be slightly out and cause selection issues when connected.

I think you definatley need to check/adjust them next.

Have a look at this might be some use,I did my x type jaguar cable adjustment after replacing mtx -75 box. If I remember correctly the special tool just locks lever in the centre position so I got the mrs to hold it while I faffed under bonnet. Have a look with spare wheel tools etc you might have the tool in car.
Title: Re: correct gearbox oil for MTX75 box
Post by: brianh on May 19, 2018, 07:08:46 PM
Is it still on the same clutch as before you swapped the box? Is it any less notchy when the engine isn't running than when it is?
Title: Re: correct gearbox oil for MTX75 box
Post by: paul1966 on May 19, 2018, 08:05:33 PM
its had a new clutch and fly wheel and slave cylinder, the gears feel the same with the clutch pressed and without, there is no noticeable difference between each gearbox and all the gears feel knotchy not just one or two. I can't believe that i have got a second gear box that has exactly the same fault as the first, that is if it is the boxes that is causing it. right now i am convinced its to do with the cable or gea rstick mechanism as its the only thing that has not been changed.
Title: Re: correct gearbox oil for MTX75 box
Post by: johnnyroper on May 19, 2018, 08:48:06 PM
I would stick money on the cables being slightly out of adjustment,did you manage to try and check adjustment?
Title: Re: correct gearbox oil for MTX75 box
Post by: brianh on May 19, 2018, 11:42:57 PM
On your original point I've had MTX75 boxes in other cars (Mondeo, Escort, And the CTX in the Galaxy) and none of them have been particularly fussy about oil, though they will get notchy if the oil is too low, topping it up is usually enough to rectify it. The only time i've known that not to be the case was with one of the Mondeos where the clutch release bearing failed (it sprang apart once the box was removed from the engine). Though that was more a case of refusing to go into gears randomly rather than just notchy.
Title: Re: correct gearbox oil for MTX75 box
Post by: paul1966 on May 20, 2018, 09:43:08 AM
we re-filled the box with new oil of the correct type when we re fitted it, i have tried adjusting the cable, you can only adjust one cable, the other is non adjustable, i did it by putting the box in 4th gear disconnecting the cables whilst the gear stick is held in 4th gear position then re fit the cables which made zero difference.
Title: Re: correct gearbox oil for MTX75 box
Post by: johnnyroper on May 20, 2018, 06:15:17 PM
I seem to remember the box is manually put in 3rd and the lever is locked in dead centre of neutral,then cables refitted to box.as you unlock the lever and cycle gears the slack is taken up on the ratchet adjustment on cable?? Itís been a couple of years since I did my mtx75 but thatís how I recall it was done.