Hi,

Having completed a full strip down and rebuild of the engine according to the dvd I have now bought the Hydraulics dvd and am about to start looking at that end of the tractor.

I noticed that Ian mentions using multigrade oil in the gearbox/hydraulics. Having Googled this and looking at a few forums I am now confused. Should I be using 32 grade hydraulic oil or multigrade engine oil?

Also what about my log splitter which I use on my Ford 4000 with 32 grade hydraulic oil in it. If I use it on the Fergy with different oil then the oil will surely get mixed?

Thanks

Andrew

Hi Andrew,

In the Fe35, the recommended oil is SAE50 in our climate (or SAE 40 in colder climates). However, these days you would just use 15w/30 farm universal oil (or possibly even a dedicated premium transmission oil such as 10w/40). Definately not 32 grade hydraulic oil – that would be used in specific hydraulic systems (ie. without a tractor gearbox running off the same reservoir). Also definately not dedicated engine oil or any dedicated gear oils.

As for the mixing of the oil when you swap the log splitter between the two tractors?? Well that’s one reason why the oil should be changed at regular intervals – so that the correct oil in the tractor doesn’t get too diluted/contaminated with incorrect oil from other systems.

Hope that helps.

Kind Regards,

Ian

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Hi VTE.

I have followed the whole rebuild process acording to the fantastic DVD I bought (I also bought the Workshop Manual for the MF 35).

I have recently started up the engine for the very first time.  It was running absolutely fantastic.  But after approx 4-5 minutes the engine slowly stalls and decreases in revs and then completely stalls – almost at the same time the radiator starts “leaking” because of the boiling water in the block.

Everything inside is new – pistons, rings, liners, crankshaft is balanced with new bearings – the WHOLE lot.  What I am afraid of is that the tolerance between the piston through the rings to the liner is to narrow.  I have removed the head now and looked at the pistons and the inside of the liners and they look as they were new – no scratches no ressidue of any kind!  All the spare parts I have bought in the UK – also the Engine Overhaul Kit – 23C.

What would You recommend I do next?

Kind regards from Denmark
Mr Lau Jakobsen

I would think you have a cooling problem.

What will be happening (I suspect) is that the cooling system isn’t working
for some reason.  The aluminium pistons will be overheating and expanding
(more quickly than the iron block) and hence the expanded pistons will
become difficult to move along the bores.   This will create more friction
and even more heat making the engine even hotter and the problem even worse.

What could be wrong?

Either one of the pipes is blocked up or the thermostat is not allowing the
water to circulate or the water pump is not circulating the water or the
radiator blocked.  Other things to look for are gaskets fitted incorrectly
and blocking coolant pathways, or temporary covers (e.g. cloths or tape used to cover coolant pathways during the rebuild) that haven’t been removed. I would take a careful look at all the cooling system components.

The thermostat should begin to open at between 68 and 74 degrees C. It
should be fully open at 85 degrees C – which can be checked by placing in a
pan of water and heating up the water.

Will this have damaged anything?

Hopefully not. If the engine was just running at idling speed in the
workshop then I would suspect that nothing will have got damaged. Things tolook for are damaged piston rings and cylinder head (although you have been in and inspected these).

Hope that helps.

Let us know how you get on.

If anyone has any other theories or suggestions for Lau then please let us know in the comments below.

The Vintage Tractor Engineer.