New Holland TL100a hydraulic / transmission oil sump plug location

B Rabbit

Hi Folks,

Don't know where else to ask this, can't find good diagrams online anywhere.
Does anyone here know the location for the sump plug for the hydraulic oil / transmission oil for the NH TL100A series?

A photo would be a massive help, there's a leak coming from a neighbors machine but finding it hard to pinpoint the source. I want to see if it's the plug or some other seal.

mad-for-tar

Main drain plug is on the bottom of the 4WD drop box under centre of the tractor. There is another facing the back of the tractor where the RH lower link arm is attached to the torsion bar (follow the link arm towards the inner ball and you will see it close to it). There are also others on the front section of the transmission housing close to the bottom of the fuel tank but not commonly drained from there. Main one in attached photo on the 4WD drop box.

APL drain plug.JPG

B Rabbit

mad-for-tar wrote: »

Main drain plug is on the bottom of the 4WD drop box under centre of the tractor. There is another facing the back of the tractor where the RH lower link arm is attached to the torsion bar (follow the link arm towards the inner ball and you will see it close to it). There are also others on the front section of the transmission housing close to the bottom of the fuel tank but not commonly drained from there. Main one in attached photo on the 4WD drop box.

APL drain plug.JPG

Thanks a million

B Rabbit

Just to follow up on this. It looks like the leak is coming from where the right rear axel stub is attached to the centre section.

Strange spot for it to leak? I've never heard of them leaking from here before.

B Rabbit

Just to follow up on this. It looks like the leak is coming from where the right rear axel stub is attached to the centre section.

Strange spot for it to leak? I've never heard of them leaking from here before.

B Rabbit

Just to follow up on this. It looks like the leak is coming from where the right rear axel stub is attached to the centre section.

Strange spot for it to leak? I've never heard of them leaking from here before.

mad-for-tar

Trumpet housing was probably off at some stage in its life to get at the brakes and not sealed again using the correct sealant. Might be no harm put a spanner in the ring of bolts that hold it in and just check none of them have come loose.
Only way to cure the leak is to drain the oil, whip off trumpet housing, clean up surfaces, reseal and reassemble again.
Loctite 515 or the Bondloc version of it is the correct stuff to use. It can be expensive but guaranteed no leaks afterwards, it also acts as a glue of sorts for rigidity purposes.
Hope it helps.

B Rabbit

mad-for-tar wrote: »

Trumpet housing was probably off at some stage in its life to get at the brakes and not sealed again using the correct sealant. Might be no harm put a spanner in the ring of bolts that hold it in and just check none of them have come loose.
Only way to cure the leak is to drain the oil, whip off trumpet housing, clean up surfaces, reseal and reassemble again.
Loctite 515 or the Bondloc version of it is the correct stuff to use. It can be expensive but guaranteed no leaks afterwards, it also acts as a glue of sorts for rigidity purposes.
Hope it helps.

You couldn't be more helpful. Thank you