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Massey Harris & Massey Ferguson Tractors Discussion Forum
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Perkins diesel drips

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Rod in Smiths F

06-25-2006 04:52:22




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My MF35 is getting some hours this summer and I notice fuel consumption's up a bit. When I shut off I notice diesel weeping around the injection pump.

Is it reasonable to expect a 1960 engine not to waste fuel with leaks, and if so, how do I or my mechanic seal it up?

The engine otherwise seems to be in great condition, with very quick starts, minimal oil consumption and lots of power.




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Bill Brox

06-27-2006 06:14:54




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 Re: Perkins diesel drips in reply to Rod in Smiths Falls, ON, , 06-25-2006 04:52:22  
Does anyone have partnumbers for those parts ?


Bill



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TomTX

06-27-2006 16:02:06




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 Re: Perkins diesel drips in reply to Bill Brox, 06-27-2006 06:14:54  
Bill, you do not need part numbers for the cover gasket and the 4 o-rings. Just follow guides below to disasemble, take cover to MF dealer. They will match gasket and o-rings. Would not hurt to copy down all the serial numbers from your CAV pump; mine had 3 different numbers on it. Tom



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Bill Brox

06-28-2006 01:12:29




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 Re: Perkins diesel drips in reply to TomTX, 06-27-2006 16:02:06  
Ok, I guess I am on my own in this, no MF dealer over here will ever have anything like that. Tampering with the injection pump is considered something no one shall do, and therefor no parts are available for them. This doesn't apply to MF only, but the entire diesel community. Europe is quite different than the US. Here it is the throw away system that counts, we have little traditions for repairing things ourselves. All jobs are put away to professionals, and they are often in a monopoly situation. I doubt I will ever be able to order such parts from a specialized diesel repair shop. They will be afraid I will do something they will loose money on. I know it sounds weird, but this is Europe.
Take something else, shop manuals, in the US is it a normal thing to buy original shop manuals for cars and whatever. In Europe, and Norway in particular such things are for dealers only, monopoly again. The idea is that you should be forced to let the dealers repair everything. More money for them.

So, that was the reason I asked for part numbers, but if they are industry standard o-rings and just a paper gasket I can get that myself from somewhere, gasket material is in my garage.

Bill

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TomTX

06-25-2006 10:36:53




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 Re: Perkins diesel drips in reply to Rod in Smiths Falls, ON, , 06-25-2006 04:52:22  
I found my pervious post on this and have pasted it below. First you must clean and find out where the leaks are coming from; the procedures below are only for leaks coming from around the throttle shaft, the shut off shaft, or the top cover/lid to the pump. Hope this helps someone, as I really learned it "hands on style". Tom

On my MF-690, I just replaced the o-rings around the throttle pin/shaft and the shut-off pin/shaft. 2 o-rings go on each. Get new o-rings and new cover gasket at MF dealer. Clean the complete exterior with engine cleaner, and then brake parts cleaner until it is absolutely spotless. Clean around the entire area as well. If you open up the top of the pump and let a dirt/grease ball fall into it, it may cost you several hundred dollars for a rebuilt pump. Keep it clean. take off cables. Loosen cover and move it up just a LITTLE BIT only. Hold it up a little and look carefully underneath it at the spring that goes from the lid to the underneath part of the pump. One end fastens on to what is called a "tombstone or headstone" because of its shape. The tombstone has different holes - - You MUST write down which hole it is in. The other end is hooked into a "flat rod" and it has mulitple holes - - You MUST write down which hole the spring is hooked in. DO NOT rely on memory, write down both spring hook positions. Now unhook the spring, remove cover, You are ready to replace the o-rings. Reverse the porcedure with new cover gasket. It is a bit tedious - I had a helper to get the spring hooked back up. Leaks are now stopped. Total cost about $5 for o-rings and gasket. Good luck. Last note: IF the spring falls out and you don't know which holes it was in, take full serial numbers (3 of them) to MF dealer. They can then tell you which holes. The tractor will never run correctly unless both spring hooks are in the correct holes. Tom

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Rod in Smiths Falls, ON,

06-25-2006 15:45:45




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 Re: Perkins diesel drips in reply to TomTX, 06-25-2006 10:36:53  
The procedure sounds quite scary to a "burnt fingers" tinkerer. Under the circumstances I think diesel is the cheapest thing I can put into that engine. If it starts dripping out faster than I can afford to put it in, off to the dealer it goes.

Thank you for the information and the implied advice.

Rod



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TomTX

06-25-2006 20:57:59




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 Re: Perkins diesel drips in reply to Rod in Smiths Falls, ON, , 06-25-2006 15:45:45  
Rod, it was not my intent to scare you off the job, just trying to warn you about being careful about the spring. I would not take tractor to dealer for this straight forward job. My total cost of fix was only $5 and I got the "learnin" free. Bisides, your MF dealer may turn some high school kid trainee loose on your tractor, and you may have to re-do it yourself anyway. Tom



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J Schwiebert

06-25-2006 08:40:13




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 Re: Perkins diesel drips in reply to Rod in Smiths Falls, ON, , 06-25-2006 04:52:22  
Tom is correct. One advantage you have the pump is in the horizonal position. If you are not sure of what you are doing I would give you 2 options. First one is if you want to do it and you do to it unhook the hose to the intake manifold and have a 1 inch board handy in case the engine runs away so you can turn the air off by placing the board over the air inlet. Second ask someone to help you that has done them. I don't know if Tom has them but when I worked for an implement dealer I had the two little tools that help with the two shafts. Now how about a better description of where the leak is. It can also be the washers to the high pressure lines and even the little gasket over the acess cover. Questions? Good luck! J.

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TomTX

06-25-2006 05:44:45




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 Re: Perkins diesel drips in reply to Rod in Smiths Falls, ON, , 06-25-2006 04:52:22  
Does it have the CAV pump? If so, they often leak around the throttle shaft and the shutoff shaft. There are two very small o-rings on each shaft. Replaced mine and no more drips. Post back if you have the CAV. It is VERY tricky to remove and replace the cover, and I will post pointers. Tom



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Our Farmer

06-25-2006 06:56:32




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 Re: Perkins diesel drips in reply to TomTX, 06-25-2006 05:44:45  
I'd be interested too. I have the CAV pump on my 4.192 65 and I'm starting to get a little dripping around the pump.



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Bill Brox

06-26-2006 04:33:28




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 Re: Perkins diesel drips in reply to Our Farmer, 06-25-2006 06:56:32  
Hi, this sounds very very very interesting. My MF 165 has this problem with leaking cover on the CAV injection pump. And, it comes from the top of it.

But, I have never ever heard that it was possible to get parts for it from the MF dealer.

Must be the same gasket and o-rings on all those CAV pumps, they look equal all of them, no matter the size of the tractor.


Bill



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Bill ini TN

06-26-2006 18:24:53




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 Re: Perkins diesel drips in reply to Bill Brox, 06-26-2006 04:33:28  
Rod....the O-rings and gasket are very simple to replace.....nothing scary at all.....just make sure to put the springs back in the same position they came out of..... ..I, like you, were a little leary about doing mine....but again.....nothing to it!



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