John deere 5400 , 1998

[Pierre Goulet]

Hello my name is Pierre
I live in Canada, Quebec

My John deere 5400, 1998 has a 12/12 hydraulic reverse transmission and when cold is still fine, but when hot loses power in front wheel drive only, it seems to lack hydraulic oil flow. for the transmission to work well. I spoke to the dealer and they have never seen that ???
Can someone help me ??

Thank you everyone and have a nice day

 

[stingray1]

Welcome to the forum. Quebec is a beautiful area,I’ve always had a great time there.

 

[Wagtail]

Bonjour ami et bienvenue chez TBN d'Australie.

Profitez du site.

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G'day Mate and welcome to TBN from Downunder.

Enjoy the site.

 

[TBN Support]

Hi and welcome to the forum!

I'm going to move this thread over to our John Deere section.
:tractor:

 

[Pierre Goulet]

thank you very much and hoping to find the information for my johndeere problem! Thank you

 

[sixdogs]

I had a Deere 5520 once that had some strange things happen such as no brakes after the tractor warmed up. After a lot of angst and $500 in troubleshooting, it appears the remote levers were sticking just a tiny bit off center and causing the trans oil to overheat and cause problems. So I wiggled the remote levers and the problem went away and stayed away. The remote levers were just very slightly off center so no squealing and it took an hour for the oil to heat up and cause problems.

I have no idea if this is your issue but I have heard about others having similar odd problems like mine so it's worth a look. Our final diagnosis was with one of those laser pointer thermometers and we could see different parts of the transaxle at different temps. Definitely a Hail Mary stab at a cure but it worked.

 

[Tx Jim]

Pierre
Welcome to TBN
How are you determining that after tractor reaches operating temp. MFWD loses power?

MFWD is gear driven from trans to a drop box to front differential gears not hyd powered. Is it possible both rear & frt tires lose power?

 

[Pierre Goulet]

Thank you , I check this

 

[Pierre Goulet]

Hello!
No, my 5400 is fitted with a hydraulic reverse, so when the oil comes hot, that's when I lose traction power!

 

[Tx Jim]

I think hydraulic reverser clutch has a faulty seal therefore it can't hold enough pressure to keep clutch engaged when hyd oil warms up.