New Holland 5635 transmission oil overheating issues.

[Larel]

As the title suggests. Yesterday I spent about 4 hours on the tedder with no issues that I noticed. The. It was on the haybob for 2 hours with the wife driving rowing up in front of the baler. She hasn’t been on that or any other tractor for years so I wouldn’t have expected her to notice anything but when I went to went to put the haybob into transport for going home I smelt hot oil at the back end and could see hot vapour coming up in the breather tube. I left it in the field overnight and the level was still normal when everything cooled down in the morning.
I drove it home today and dropped the oil out of it. Today I’ll refill the oil and am fitting new filters for a start. Only thing I noticed when I drove it was that the break pedal is going a lower than it was yesterday I think. But it still breaks well when pushed.
When I pulled the plugs to drop the oil 2 of them have magnets. These are a pic before and after I cleaned them.

The oil was changed just under 400 hours ago. (900 hour interval according to the book).
Looks a lot of metal stuck to the magnets to my eye! But I don’t see that many oil changes.

 

[tinman]

What hours are on the tractor?
Was the handbrake left on when it was driving?
is the cable stiff and not returning home when the handbrake is down?

was there anything large on the magnets, looks like there was something on the right hand one in the pic?.
id throw a blind guess that its either the brake discs or the handbrake pads that's at fault, the latter would be my first port of call.

 

[Larel]

What hours are on the tractor?
Was the handbrake left on when it was driving?
is the cable stiff and not returning home when the handbrake is down?

was there anything large on the magnets, looks like there was something on the right hand one in the pic?.
id throw a blind guess that its either the brake discs or the handbrake pads that's at fault, the latter would be my first port of call.

2675hrs. I did ask her if the hand brake was left on but she said no and she’s only 5’4” so was struggling to reach the breaks anyway so she wouldn’t have been riding the pedal!

That bit between my first and second knuckle is about 5 or 6 mm long. That’s the biggest but there were a few slivers about 4 mm long. Rest was small filings type.

 

[tinman]

If the handbrake pads are worn the lever when you pull it will be cumming up close to the top of its travel which would be an indication.
The handbrake may not be at fault, its just the cheapest place to start.
The hours in the tractor are very low tho and tbh the Hbrake and brake discs should be in good condition for a long time yet.

If you want to inspect the Hbrake then Follow the cable down under cab and you will see the lever it actuates on the side of the box, it has a ring of studs round it, diesel tank I'll be in the way tho so pull it off.
I can't remember if there is a plate on the underside directly below so you could inspect it but I don't think there was.
Like I say, it may not be the problem but it's a place to start looking if you were really concerned.

.

Would the spool lever have been left pumping oil by any chance, that would create a lot of heat?
Have you had the tractor from new?.
Was everything working OK the next morning when you drove her home.

 

[Larel]

If the handbrake pads are worn the lever when you pull it will be cumming up close to the top of its travel which would be an indication.
The handbrake may not be at fault, its just the cheapest place to start.
The hours in the tractor are very low tho and tbh the Hbrake and brake discs should be in good condition for a long time yet.

If you want to inspect the Hbrake then Follow the cable down under cab and you will see the lever it actuates on the side of the box, it has a ring of studs round it, diesel tank I'll be in the way tho so pull it off.
I can't remember if there is a plate on the underside directly below so you could inspect it but I don't think there was.
Like I say, it may not be the problem but it's a place to start looking if you were really concerned.

.

Would the spool lever have been left pumping oil by any chance, that would create a lot of heat?
Have you had the tractor from new?.
Was everything working OK the next morning when you drove her home.

Handbrake seems good, the same position to grip and is releasing fine. I checked the spools at the time and they were both in the float position but that’s not to say they’d not been knocked. The brake pedals definitely go further down, before gripping, but still stop well. Otherwise it all drove ok.
I’ve had it since it was 5 years old, I got it with 1100 hours on it.
I’ve used it today on the tedder till I got rained off and all was fine. I’ll see how it goes over the next few days, I won’t dive in if there’s no other issues just now. Thanks for the info.