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Noob with 1940 9N lift problem

3928 Views 18 Replies 6 Participants Last post by  JohnW
Hi everyone. Nice looking forum. I run a similar forum for Moto Guzzi motorcycles. Anyway, not here to promote my site, but to introduce myself and ask a couple questions.

I just recently acquired this 9n so I could do small jobs around the house. After a bout with the electrics and rebuilding the carb, I finally got this thing running like a top.

Now, I cannot get the lift to work at all. The PO said he thought it worked when he parked it 3 years ago. Here is what I have did as far as troubleshooting goes.

I have drained the yellow and watery oil from the tranny/pump/diff cases and replaced with new 90W GL1 from TSC. Still no worky.

Then, I pull the access cover and work the control arm up and down but see nothing moving. Shouldn't something be moving when the arm is moved up/down?

The pump works as verified through a successful PTO test and turbulence seen through the access cover with engine running and pto engaged, so I believe the pump to be ok.

I bought the F04 book and read through it, but it really can be a little confusing to newbie tractor owners. Motorcycles are easier :)

Would it be best to pull the pump and give it a go over? This will be my first bout with hydraulics. I also have a Terramite t5c backhoe that has given me a little experience in the tractor maintenance world.

Anyhow, I would really appreciate some ideas on what to check or test next. Even after changing the fluids, it still looks a little bad, so I think I will drain it and replace it again tonight and maybe flush it with diesel. I don't want to to this often at $50 a pop though.

BTW, pics to follow.

Luap McKeever
1 - 1 of 19 Posts
No need to get the video for the lift.. the hyds on a 9n-2n-8n are easy to rebuild.

sounds like yours was just stuck from some corrosion or grit.

as for the charge system.. hard to tell from the absence of usefull details in your post.. but.. do you still have a 6v system.. or a 12v system. most 6v systems are a generator .. 3 brush style with a cutout... most 12v systems are alternator based.

which you got.. sounds like you are still on 6v.... 6v alternators are WAY rare... positive ground alternators are WAY rare.

the more info you provide.. the better answers you will get.

1 - 1 of 19 Posts
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