International 574 hy-trans or not?

startinghandle said:

thanks for reply postharvest
I remember there was more guts in the 475 and a know it all fitter from the local MF agent made a big thing out of it by saying that IH having to resort to Perkins engines

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bravheart said:

Spoiler first,
This may be completely WRONG so don't wreck your back end without checking first
When a 674 joined a fleet of 165's the question was asked, what happens when using the hydraulics on the tractors and universal oil ending up in the IH transmission. Pretty sure we were shown another mark near the top of the dipstick and told that we could use universal oil in the IH if we filled it up to that mark.
In those days all we had was a 45 gallon drum of universal sat on a trestle for all tractors and machinery.

aaaaasaaaaaah bliss!

Click to expand...

bravheart said:

Spoiler first,
This may be completely WRONG so don't wreck your back end without checking first
When a 674 joined a fleet of 165's the question was asked, what happens when using the hydraulics on the tractors and universal oil ending up in the IH transmission. Pretty sure we were shown another mark near the top of the dipstick and told that we could use universal oil in the IH if we filled it up to that mark.
In those days all we had was a 45 gallon drum of universal sat on a trestle for all tractors and machinery.

aaaaasaaaaaah bliss!

Click to expand...

PostHarvest said:

We were told that the seals in IH tractors were a special blend of rubber that was matched to the characteristics of the Hy-Tran oil and that if another oil was used the seals would go hard and leak.

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Roy_H said:

My neighbour ran both 574 and 475 tractors and although the 574 was rated at 68 HP and The 475 was 62 HP he said The Perkins engined tractor was a much better puller.

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Gapples said:

Utter rubbish, he either had an exceptionally turned up 475 or much more likely a very poor running 574 with an issue.
The 474 used a short stroke engine where as the 574 used an identical long stroke engine as the 674 but rated 10hp less.
So whilst the Perkins in the 475 was a good enough motor, it was no match for the longer stroking 574 engine.

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startinghandle said:

from 1976 until 1980 I worked at the local IH dealer and I remember there was quite a difference in the performance of new 475's … the tractors were unloaded about half a mile from the depot and were driven full throttle to the yard.... I remember there was problems with some 474 tractors, one in particular was smoking and could be stopped even by the IH service guy , another was using excessive oil, and that was the reason why perkins engines replaced IH engines until the problem was sorted by the time the 584 arrived... the 475 was a popular tractor.. regarding using hytran it was 30 years later that I discovered the reason only hytran was only to be used .. it was a marketing ploy by IH so that fluid had to be bought from main dealers only and using any other fluid would cause problems... now universal transmission fluid seems to be ok

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Gapples said:

Utter rubbish, he either had an exceptionally turned up 475 or much more likely a very poor running 574 with an issue.
The 474 used a short stroke engine where as the 574 used an identical long stroke engine as the 674 but rated 10hp less.
So whilst the Perkins in the 475 was a good enough motor, it was no match for the longer stroking 574 engine.

Click to expand...