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Old 04-01-2020, 12:47 PM   #1
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Default Oil pump install question

I've recently acquired a 31 rolling chassis with motor and trans. Unknown if it's a runner or not, so I've removed the oil pan and pump to clean. When I removed the pump there was no screw in the passenger side block. Upon reinstall, I threaded a bolt lightly in the hole to hold the pump. Pan is installed with new gaskets, etc. My question is, is the bolt supposed to remain in the hole to hold the pump, or should I remove it and plug the hole with..... ??? Thank you
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Old 04-01-2020, 01:02 PM   #2
dennis lumbert
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Default Re: Oil pump install question

The oil pump is held in place by the spring mounted to the bottom of the pump.No bolt,the hole is sealed with a pipe plug.Dont remember the pipe plug thread size.
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Old 04-01-2020, 01:28 PM   #3
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Default Re: Oil pump install question

The thread size for the hole is 1/8 “ pipe thread.
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Old 04-01-2020, 01:53 PM   #4
Werner
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Default Re: Oil pump install question

wrong text, deleted
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Old 04-01-2020, 01:55 PM   #5
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Default Re: Oil pump install question

Number 13,
this pin is only an assembly aid. It prevents the pump housing from slipping out until the oil pan is in place.

Many success!
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Old 04-01-2020, 02:09 PM   #6
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Default Re: Oil pump install question

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If you screwed in a normal thread "bolt" you may have damaged the NPT ( Pipe Thread) in the hole. Use the proper size NPT pipe plug. Or the available handy tool that uses a small screw through a pipe plug to hold the pump during engine assembly.

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Old 04-01-2020, 03:39 PM   #7
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Default Re: Oil pump install question

Thank you everyone!
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Old 04-03-2020, 07:37 AM   #8
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Default Re: Oil pump install question

...

Last edited by Benson; 04-03-2020 at 07:49 AM.
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