DAVID BROWN 1490 HYDRA SHIFT PROBLEMS

jocotty

Hi

I bought a David brown 1490 last year ... and tractor has been going great . The tractor has a normal gear leaver (first , second , third and reverse ) then it has the hydra shift lever on the floor, which is like low , medium and high.

However ,a few days ago. . I was drawing a load of bales , and it was like the clutch started slipping when in high third , as I was going up a hill.

I changed it down to first gear ( using the main gear leaver ) and it pulled away grand again, with the hydra shift working away grand again as normal.


This keeps on happening since.

It comes and goes, even if only doing light work. . Can work fine for a while. .. then start acting up again for no reason.

This problem came on really fast .. as I have been using this tractor all summer without any problem

Any idea what this might be

Could it be a dirty filter or something in the hydra shift. .

Hope its not too serious.

I would really appreciate some information. If anyone has the manuals for the 1490, or the hydra shift - I would be very grateful if you can PM me.

thanks

Jo

Sam Kade

[URL="httphttp://www.2shared.com/document/0vr13evn/Case_IH_International_David_Br.html://"]httphttp://www.2shared.com/document/0vr13evn/Case_IH_International_David_Br.html://[/URL]

You can download manual here

jt65

Sam Kade wrote: »

[URL="httphttp://www.2shared.com/document/0vr13evn/Case_IH_International_David_Br.html://"]httphttp://www.2shared.com/document/0vr13evn/Case_IH_International_David_Br.html://[/URL]

You can download manual here

link not working (could be my browser )

OP we bought a 1390 some years and it gave similar problems

vendor failed to fix it under warranty & we got a full refund

I think he eventually fitted a straight gearbox

not answering your query , if youre in the mid west knowa couple of db mechanics

jocotty

Sam Kade wrote: »

[URL]httphttp://www.2shared.com/document/0vr13evn/Case_IH_International_David_Br.html://[/URL]

You can download manual here

thank you very much Sam Kade - but I am having trouble with that link .

can you please resend it.

jocotty

Sam Kade wrote: »

[URL]httphttp://www.2shared.com/document/0vr13evn/Case_IH_International_David_Br.html://[/URL]

You can download manual here

SAM KADE,

Would it be possible to PM me , and I can get the document from you.

I cant open that link.

Jo

Sam Kade

jocotty wrote: »

SAM KADE,

Would it be possible to PM me , and I can get the document from you.

I cant open that link.

Jo

I am using my phone maybe that's the problem. Try this link
http://dc589.2shared.com/download/0vr13evn/Case_IH_International_David_Br.pdf?tsid=20140721-081106-c52c12dc

I thought is was a free download they are charging 8.90 usd for it. Hope this link works.

td5man

Have had a few hydrashifts here over the years .
First thing check the hydrashifts filter ,looks like a drain plug beside the transmission drain plug .
It most likely is the seals in the clutch packs, they're just a couple of big o rings. Big enough job to get at them though.
Barcley Williams in the UK do recon boxes
I have redone them myself though easy enough to do as long as you're careful and keep everything clean.

td5man

The lever with the red top is low - medium-high-reverse the other hydrashift lever is 1234.

jocotty

td5man wrote: »

The lever with the red top is low - medium-high-reverse the other hydrashift lever is 1234.

that's correct td5man.

jocotty

td5man wrote: »

Have had a few hydrashifts here over the years .
First thing check the hydrashifts filter ,looks like a drain plug beside the transmission drain plug .
It most likely is the seals in the clutch packs, they're just a couple of big o rings. Big enough job to get at them though.
Barcley Williams in the UK do recon boxes
I have redone them myself though easy enough to do as long as you're careful and keep everything clean.

td5man,

is this filter a fairly big filter, about 8 inches in diameter, underneath the chassi?

td5man

jocotty wrote: »

td5man,

is this filter a fairly big filter, about 8 inches in diameter, underneath the chassi?

No it's right beside the drain plug on that filter housing, think it's the smaller one.
The filter pulls down with the bung and is washable.

jocotty

td5man wrote: »

No it's right beside the drain plug on that filter housing, think it's the smaller one.
The filter pulls down with the bung and is washable.

is it like a long filter, about an inch diameter, and about 3 inches long, , with the nut attached to the end of it?

td5man

jocotty wrote: »

is it like a long filter, about an inch diameter, and about 3 inches long, , with the nut attached to the end of it?

That's it.