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Slipster

My Tractor IH 475

I have been having a problem with my IH 475  1974 Tractor..... It starts well but as soon as it warms up and load applied it blows black smoke and is well underpowered sounds as though its only running on 3 cylinders. My thoughts where the injectors and so I removed them and sure enough one of them was damaged at the pin, looks as though something has got in and chipped the end, Ive taken them all to a diesel engineering company who will test them and repair/replace.
My question is would anyone (Gareth )know if there is supposed to be "O" Rings fitted on the body of them ? When I took them out none where fitted there is a groove for an "O" ring. There was a lot of water between the body and the casting. Would it hurt anything if I fitted "O" rings back ?

Thanks Kevin
Gareth

An IH 475 should only be running on three cylinders................ that model (European Doncaster Build) was only ever built with the 3 cylinder Perkins engine although there were a few (not very many at all) 4 cylinder 62HP IH engined 475's made in the states. .............. so over here in the UK they are almost as rare as rocking horse poo!

As a rule of thumb, Injectors with a tapered base and a projecting injection nozzle will have a groove about half way up them and you will require an O ring to seal it to prevent water and condensation seepage down the injectors body: the taper does the sealing to the combustion chamber.

If the end of the injector body is squared off with a protruding knozzle then it will require a copper washer at the bottom of the hole to seal it.......... make absolutely certain you have removed and discarded the old one and installed the new one correctly before fitting the injector.

A lot of the purist tractor enthusiasts are going to wince at and then castigate me for this next bit...........when re-installing an injector into an older engine smear it with copper grease and if it is possible seal the uppermost part of the injector where it meets the head casting with an O ring. These 20 plus year old engines have been through many heating up to operating temperatures and cooling down cycles over the years and in all weathers and conditions. Some times micro cracks or porous areas might occur and these will of course be prone to corrosion................ and a few times I have spent more than two hours extracting individually seized in injectors from cylinder heads on engines that are irreplaceable due to age and rarity, and it would have been extremely expensive to repair if I had damaged them.
Slipster

Thank you so much for that, my tractor is indeed a four cylinder (although just lately it thinks its a three) I have some hitemp copper grease that I will use when refitting and will fit "O"rings I will try and fit some at the top as well but im not sure if the injector will seat properly at the tapered base.

Thanks again Kevin




sapphire

Nice tractor  
Slipster

Well after fitting my repaired injectors complete with new O rings and copper grease my beloved tractor is like new  no smoke and goes like a gooden  
12Bore

horace

 
sod

flipance

Gareth wrote:
An IH 475 should only be running on three cylinders................ that model (European Doncaster Build) was only ever built with the 3 cylinder Perkins engine although there were a few (not very many at all) 4 cylinder 62HP IH engined 475's made in the states. .............. so over here in the UK they are almost as rare as rocking horse poo!

As a rule of thumb, Injectors with a tapered base and a projecting injection nozzle will have a groove about half way up them and you will require an O ring to seal it to prevent water and condensation seepage down the injectors body: the taper does the sealing to the combustion chamber.

If the end of the injector body is squared off with a protruding knozzle then it will require a copper washer at the bottom of the hole to seal it.......... make absolutely certain you have removed and discarded the old one and installed the new one correctly before fitting the injector.

A lot of the purist tractor enthusiasts are going to wince at and then castigate me for this next bit...........when re-installing an injector into an older engine smear it with copper grease and if it is possible seal the uppermost part of the injector where it meets the head casting with an O ring. These 20 plus year old engines have been through many heating up to operating temperatures and cooling down cycles over the years and in all weathers and conditions. Some times micro cracks or porous areas might occur and these will of course be prone to corrosion................ and a few times I have spent more than two hours extracting individually seized in injectors from cylinder heads on engines that are irreplaceable due to age and rarity, and it would have been extremely expensive to repair if I had damaged them.

I have a 4 cyl. IH 475 too, but is rather rust coloured now , but still runs. 1976 I think, Perkins engine I also think. as opposed to the 574 which has an international engine.
Slipster

Hi and  

The 4 cylinder is as you say a Perkins    I have rather an odd relationship with my tractor

Gareth

In 1976 (I was 14 Years old) we had a 3 cylinder Perkins 475 with a MIL loader on it (NJF777P) it was so much better than the David Brown it replaced. Mainly because the gearbox was synchromesh, and the reverse was in the range box making forward to reverse shuttling so easy; just pick a gear and then shuttle between the ranges. With the loader controls located to the right hand, transmission on the left with a hefty size range lever it made loading cycles so much simpler and much faster in operation.
Slipster

Gareth that would have been purchased brand new as P reg was from August 1975 until July 1976
Gareth

Slipster wrote:
Gareth that would have been purchased brand new as P reg was from August 1975 until July 1976


Yes, it was purchased brand new from EMF (East Midland Farmers), Park Road, Melton Mowbray. It was the first new tractor that I recall being bought. Until then we had a slowly turning over succession of second hand tractors. The 475 replaced a 1957 David Brown. Our Next newest tractor was an F reg Ford 5000 (75 HP model not the 64 HP one), and then It was 2 X 1960(?) IH B275 (one had the reg no BNR211) and 2 X 1962 IH B414s.
flipance

This is her , 475 4cyl perkins 62 hp
confused

Now Flipance thats my idea of an old work horse, just sitting trhere waiting to be loved , but willing to do a days work if asked , great picture .
Slipster

    Poor old Tractor        Love the pic  
sod

A real work horse ready and willing as "confused" said, I love it  
flipance

Gareth wrote:
An IH 475 should only be running on three cylinders................ that model (European Doncaster Build) was only ever built with the 3 cylinder Perkins engine although there were a few (not very many at all) 4 cylinder 62HP IH engined 475's made in the states. .............. so over here in the UK they are almost as rare as rocking horse poo!



The largest 3 cylinder IH I am aware of is the IH 454 WITH A 2933 cc 3 cylinder engine.

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