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Massey Harris & Massey Ferguson Tractors Discussion Forum
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135 oil leak

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phil25

11-10-2006 17:17:14




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Got a strange one: on a 135 with 3 cyl Perkins diesel, it started to leak oil out of the oil passage plug, behind the adapter plate.
To be sure i installed 2 plugs with "permatex" sealant and reassembled.
As soon as the engine was warm to the touch i can see oil seeping out between the block/adapter plate, in this oil passage area. And again i found oil had bypassed both plugs and had left a puddle in the space available.
I did notice the machine has 75+ lbs oil pressure[ 3000hrs on unit]with the new plugs installed and the book says 55/60 is normal relief operating pressure, a stuck relief?? owner says 60 is normal for past 2 years when it was leaking a quart a full days running.
thanks to all who can suggest possiblities.

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Aaron Ford

11-11-2006 10:00:59




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 Re: 135 oil leak in reply to phil25, 11-10-2006 17:17:14  
75 psi does sound a bit high. I would suspect a stuck relief in the oil pump. Hopefully this is somewhat easy to access. The pump rebuild kit for my G176 Continental is $43. Yours should be roughly half of that, although I cannot find a listing for it. Aaron



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135 Fan

11-10-2006 18:27:12




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 Re: 135 oil leak in reply to phil25, 11-10-2006 17:17:14  
Adapter plate? Are you talking about on the bottom of the clutch housing? If that's the case your oil pressure might be too high and it took out the rear seal. Is the oil from the engine? or Trans? Either would indicate a leaking seal. Be best to change both when it's apart. You don't want to plug up the leak. Then you will need a clutch as well. Even when you fix the high oil pressure, you'll more than likely still have the oil leak and it will have to be fixed. The leak has already started. Unfortuneatly the tractor has to be split to fix it. Hope this helps. Dave

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phil25

11-11-2006 04:27:56




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 Re: 135 oil leak in reply to 135 Fan, 11-10-2006 18:27:12  
thanks for the reply, a bit more to explain, the oil leak is coming from the chamber that supplys oil pressure to the pressure gauge connection on the left side of the block. This chamber had orginally a "frost" type plug pressed in to block it off. Access to this is only possible after the "adapter" plate is removed,this plate is the what the starter bolts to and it is bolted to the engine as the connecting piece between engine block and tranny housing.
The rear seal casing is dry all around it, as the leak leaves a small puddle in the plug recess,leak trail down the block also, it was easy to find. Luky enough that its a constant drip that didn't get into the clutch area, stayed forward of the flywheel and runs out of the drain hole in housing bottom.
The IT manual shows this plug on page 43 as a check item in case of an oil leak in that area.
I still am wondering about this high pressure of 75lbs, something else going on? after having installed 2 plugs instead of one and still a leak, time to get some ideas.
don't want to drill/tap and screw plug inless its a last resort.
thanks

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135 Fan

11-11-2006 10:11:00




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 Re: 135 oil leak in reply to phil25, 11-11-2006 04:27:56  
I think Big Dean would be the best one to talk to. Dave



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phil25

11-11-2006 13:18:04




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 Re: 135 oil leak in reply to 135 Fan, 11-11-2006 10:11:00  
Already in process with him, hopefully something comes to light as he ponders it a bit, good thing is its not a rear main seal or a pan gasket, but a strange and a pain to repair so far:)
Going to the re-build shops next week for the pressure question, and more plugs?
thanks again



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