Yanmar 1500D hydraulic fluid leaking.

[Victory51]

Yes this is the first tractor I've ever owned so I am a newby. It looks likes it is leaking from the Transmission input shaft seal, this looks very easy to repair. Is that the only seal there or is there another one in the front of the bell housing? Here are some photos of images that I took of the tractor, let me know what you think. Thanks.

 

[Soundguy]

unless your machine has a torque tube, the union needing separating to repalce the tranny input shaft seal, is where the bellhousing attaches to the engine.. not where the trans attaches to the rear of the tractor.

This sound slike your first rodeo.. and there ain't nothing wrong with that. we all did it 'the first time' once. You might want some help on this.. perhaps someone who's done one before.

If you have a parts list for your tractor post it.

I can't tell if your bellhousing is setup similar to a torque tube.. that will tell you where the seal is.

 

[Victory51]

your message shows obvious signs of tractor newby-ism.

a yanmar 1500 is a pretty old tractor. whether the proofmeter is correct or not.. even if that seal only has 90 work hours on it ( doubtfull ), it's still likely old.

Couple that witht he fact that it may have had a clutch job before.. and if so, the seal may not seal 100% perfectly to hold a full sump of oil. Nominal oil level in a tranny is usually LOWER than the input shaft seal, and the seal pust prevents splash and elevation change casual leaks. filling her to the top and expecting a 70's tractor to hold oil is myopic thinking.

also.. as I mentioned.. there is usually a bellhousing drain.. id check to see if yours is plugged.

why didn't it leak earlier? it MAY have, and just took a while to FILL UP the cavity and then run out a non sealed area like starter mounting.

Could you get very lucky and open the bellhousing drain, drain out a couple quarts oil, remove starter and hose the bellhousing and clutch down with a couple cans of brake cleaner, and then adjust oil level in trans to nominal, and maybee it won't be an issue?

Maybee... maybee not.

The correct fix is as I previously detailed.

Yes this is the first tractor I've ever owned so I am a newby. It looks likes it is leaking from the Transmission input shaft seal, this looks very easy to repair. Is that the only seal there or is there another one in the front of the bell housing? Here are some photos of images that I took of the tractor, let me know what you think. Thanks again.

 

[Victory51]

unless your machine has a torque tube, the union needing separating to repalce the tranny input shaft seal, is where the bellhousing attaches to the engine.. not where the trans attaches to the rear of the tractor.

This sound slike your first rodeo.. and there ain't nothing wrong with that. we all did it 'the first time' once. You might want some help on this.. perhaps someone who's done one before.

If you have a parts list for your tractor post it.

I can't tell if your bellhousing is setup similar to a torque tube.. that will tell you where the seal is.

The bellhousing attached to the engine and the bell housing is long about 2 feet. I can't find a seal in the front of the transmission or it doesn't show on on the schematics shown. Here are some pictures but I can't see a seal anywhere. But it's leaking right in front of the bell housing from the starter casing and around the bell housing. Can't figure this thing out. This is all I found with the trans input shaft:

 

[Soundguy]

your setup is running like a torque tube, in that the tranny input shaft is simply a driveshaft from the clutch.

With no descriptions of the pictured parts, I can't help much. On the first picture, and the front of the gearbox where that driveshaft enters there has to be a seal.

if you are leaking oil near the starter, I'd check to make sure that:

1, the rear main is not leaking

2, that the bellhousing is not full of oil due to a clogged drain.

 

[Victory51]

your setup is running like a torque tube, in that the tranny input shaft is simply a driveshaft from the clutch.

With no descriptions of the pictured parts, I can't help much. On the first picture, and the front of the gearbox where that driveshaft enters there has to be a seal.

if you are leaking oil near the starter, I'd check to make sure that:

1, the rear main is not leaking

2, that the bellhousing is not full of oil due to a clogged drain.

Do you mean the rear main seal on the engine? Which rear main are you talking about? Sorry very illiterate when it come to mechanics.
I need to see where the bell housing drain is at to see if it's clogged but why would it be spewing out lots of fluids. Thanks.

 

[Victory51]

your setup is running like a torque tube, in that the tranny input shaft is simply a driveshaft from the clutch.

With no descriptions of the pictured parts, I can't help much. On the first picture, and the front of the gearbox where that driveshaft enters there has to be a seal.

if you are leaking oil near the starter, I'd check to make sure that:

1, the rear main is not leaking

2, that the bellhousing is not full of oil due to a clogged drain.

Do you mean the rear main seal on the engine? Which rear main are you talking about? Sorry very illiterate when it come to mechanics and all these parts are in Japanese and don't know what the parts are, sorry.
I need to see where the bell housing drain is at to see if it's clogged but why would it be spewing out lots of fluids. Thanks.

 

[Victory51]

Do you mean the rear main seal on the engine? Which rear main are you talking about? Sorry very illiterate when it come to mechanics and all these parts are in Japanese and don't know what the parts are, sorry.
I need to see where the bell housing drain is at to see if it's clogged but why would it be spewing out lots of fluids. Thanks.

Found the seal!! Hoye helped me find it, but I still have to cut my tractor in half to do this but I really think I can do this. Here is the picture of the seal. The seal is found behind that tranny input shaft. Thanks for all your help Soundguy, appreciate it.

 

[Soundguy]

yup, tranny input shaft seal.. your input shaft is just a driveshaft like some old farmalls.

and yeah.. rear main is the rear main engine seal.

I'd still check that bellhousing drain..

 

[Victory51]

yup, tranny input shaft seal.. your input shaft is just a driveshaft like some old farmalls.

and yeah.. rear main is the rear main engine seal.

I'd still check that bellhousing drain..

Is that drain under that cowling under the tranny? I'll check that first. Thanks.