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Ford Tractors Discussion Forum

172 Ford industrial diesel (operator error)

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Mr. T. Minnesota

05-18-2017 17:48:33

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Recently delivered my Pettibone log skidder up north and used it on Tuesday and made a big mistake. Was traveling down hill and tilted the skidder too much and believe I lost lubrication to the rod bearings. The engine lost oil pressure for a short time. Ran the engine after this pressure drop and did not realize there was a problem until more than average smoke came out of the breather vent. Ran it a little longer and then it began to screech intermittently. I shut it down immediately. Oil pressure is back to normal, no white oil, and no excessive heat in the head. Operator error?? Now I believe I must redo the bearings and need all assistance possible. Any and all info is appreciated. Engine was in very good shape before this event----?

Mr. T. Minnesota

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05-20-2017 18:40:07

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 Re: 172 Ford industrial diesel (operator error) in reply to Mr. T. Minnesota, 05-18-2017 17:48:33  
Quoting Removed, click Modern View to see

It is very easy to change both rods and mains, (except for the rear) from underneath, although they will drip oil for weeks. The tough part is to get the right bearings. It is unlikely that they are standard or original. You have to remove one main and one rod cap and look for markings on the back side of the inserts. You can use the information from them to get the ones that you need. You should check all journals and bearings while you are in there for scoring or wear.

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Mr. T. Minnesota

05-21-2017 12:09:37

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 Re: 172 Ford industrial diesel (operator error) in reply to showcrop, 05-20-2017 18:40:07  
Thanks for the info. Your suggestions will be taken seriously and I will proceed working on the 172 in a few weeks. Question, why did the breather give off so much white smoke, not black which I thought would be associated with a possible hot bearing? I am a novice when it comes to this kind of problem. I can repair mechanical items but not do a major overhaul so all help is appreciated! Mr. T. Minnesotal

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welding man

05-19-2017 04:53:58

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 Re: 172 Ford industrial diesel (operator error) in reply to Mr. T. Minnesota, 05-18-2017 17:48:33  
Sounds like you have 2 choices, Run it or pull the oil pan and check the bearings and crank. If it has good oil pressure and not knocking,I'd run it a while and see what happens. I know a guy that ran an 8N for several days with no oil pressure before it croaked. He thought he had a bad gauge. Suction tube had broken off the pump. Remember that engine has a balancer too. Sometimes they make strange noises.

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Mr. T. Minnesota

05-19-2017 06:21:16

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 Re: 172 Ford industrial diesel (operator error) in reply to welding man, 05-19-2017 04:53:58  
I like your advice. Yes, the oil pressure is still very good, 80 plus which is consistent with past operation and there are no knocks noticed. Pulling the pan with engine in place is a great option. After all that happened I did turn it over without starting and it seemed good. Is it possible to change a bearing without removing the engine? Will let you know what happens in a few weeks. Thanks again for the advice.
Mr. T. Minnesota

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05-18-2017 20:12:20

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 Re: 172 Ford industrial diesel (operator error) in reply to Mr. T. Minnesota, 05-18-2017 17:48:33  
Don't get too excited. Might not have done any harm. Maybe the squeak is in the fan belt.

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Mr. T. Minnesota

05-19-2017 04:07:03

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 Re: 172 Ford industrial diesel (operator error) in reply to cdmn, 05-18-2017 20:12:20  
Checked the fan belt and removed the belt from the generator. I gave the pump a quick spin and there was not even a squeak thinking it may be a water pump problem. Still may be that problem. One critical bit of info is the excess smoke coming out of the breather vent, why? Will check the fan belt again when I travel up north in a month. Thanks for the info and all ideas are appreciated.
Mr. T. Minnesota

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