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01-05-2017, 01:35 PM | #1 |
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Don"t touch that bolt
I was searching for timing procedures for the oil pump gear to get the slot in the right place so distributor would line up. THEN I realized it doesn't matter where the slot is because the distributor cam is loose and you can put it where ever you need. (where's the smiley face with a palm smacking the forehead???)
BUT In the process, I read you should not touch the bolt that I thought held the oil pump in place. Is that bolt with a jam nut in the block near the oil pump not to hold the pump in place? http://www.fordbarn.com/forum/showth...+oil+pump+slot SaveSave
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01-05-2017, 01:58 PM | #2 | |
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Re: Don"t touch that bolt
Quote:
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01-05-2017, 02:02 PM | #3 | |
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Re: Don"t touch that bolt
Quote:
Further down near the oil pan is a pipe plug with no jam nut.
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01-05-2017, 02:21 PM | #4 |
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Re: Don"t touch that bolt
In the process, I read you should not touch the bolt that I thought held the oil pump in place. Is that bolt with a jam nut in the block near the oil pump not to hold the pump in place?
http://www.fordbarn.com/forum/showth...+oil+pump+slot SaveSave [/QUOTE]If there is a bolt in the block just above the pan rail, before you remove the bolt you should make sure that the spring isn't missing that holds the pump, if its missing the pump will fall down causing severe damage.
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01-05-2017, 03:06 PM | #5 |
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Re: Don"t touch that bolt
The spring needs to be on the bottom of the pump, and the pump needs to float on that spring because the assembly as Ford engineered it acted as the pressure relief. Don't use a bolt where the oil plug is.
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01-05-2017, 04:12 PM | #6 |
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Re: Don"t touch that bolt
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01-05-2017, 05:15 PM | #7 |
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Re: Don"t touch that bolt
Mike used the correct term. It is a plug, and it has a pipe thread. Replacing it with or using a bolt or screw can damage the threads in the block, but "touching it" (whatever that means) doesn't hurt anything.
I've never had a pump fall down; if it's loose it just drops with the pan, and Unless you've got it on a lift, and it should happen to momentarily stick when the pan is dropped, I don't see how severe damage could occur, and even that seems unlikely.
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Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole. Last edited by 700rpm; 01-05-2017 at 05:20 PM. |
01-05-2017, 06:35 PM | #8 | |
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Re: Don"t touch that bolt
Quote:
There was a change to the way the pump spring was retained --- SB Feb 30 , the reason was Ford were concerned that if an oil pan was replaced and the spring which originally was clipped to the oil pan (not the pump) and forgotten, the lock bolt once removed, the pump falls down resulting no oil pressure or worse tangled up in the crankshaft. Only the plug as a pipe thread, a fine thread bolt can be used snugged up lightly.
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Nothing can be made foolproof, ---- fools are ingenious bastards. Last edited by Brian T; 01-05-2017 at 06:38 PM. Reason: Added text |
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01-05-2017, 07:29 PM | #9 | |
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Re: Don"t touch that bolt
Quote:
I can't see of a way the pump would go over pressure and need relief. It basically pumps oil under very low pressure to the valve chamber. From there, the oil flows out the "window" on to the timing gears and/or out the oil drain back pipe back to the pan. There is no restriction that I can see that would build pressure. Under what circumstances is too much pressure obtained? If it does for some reason go over pressure and the pump drops and depresses the spring, where does the oil then go? If it drops down too far, won't it become disconnected from the drive pawl for an instant, then try to reengage with much clatter and busting of parts?
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01-05-2017, 07:57 PM | #10 |
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Re: Don"t touch that bolt
Someone sells a threaded fitting that screws into the lower hole which has an internal thread and bolt for the purpose of retaining the oil pump ONLY when removing / installing the oil pan.
If you choose to use this device DO NOT tighten the bolt too much ... the engine casting is thin in this area and might break if too tight. Old Fart Society: charter member, Last edited by Benson; 01-05-2017 at 10:15 PM. |
01-05-2017, 08:06 PM | #11 | |
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Re: Don"t touch that bolt
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01-05-2017, 08:16 PM | #12 | |
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Re: Don"t touch that bolt
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Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole. |
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01-05-2017, 10:02 PM | #13 | |
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Re: Don"t touch that bolt
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When I place the pump I use a piece of paper to shim the pump to block and it holds the pump up while replacing the pan. |
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01-05-2017, 10:06 PM | #14 | |
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Re: Don"t touch that bolt
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Some on this Forum have opinions that are outright there way and no other, and are rude to boot, absolutely no reflection on you Ray, Happy New Year.
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01-05-2017, 10:11 PM | #15 |
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Re: Don"t touch that bolt
And be sure to check the oil pump spring for any signs of rust or pits. Replace it if any pits or rust is found.
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01-05-2017, 10:14 PM | #16 | |
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Re: Don"t touch that bolt
Quote:
It looks to me like the oil is pumped to the rectangular slot near the top of the shaft then travels up to the valve chamber via the groove in the shaft. The pump would still have to pump oil the same distance dropped or not dropped. I don't see how this would be a "relief" for the pump. If it does drop, how does the oil travel back to the pan? It doesn't look like there is a path to do so. I'm sure there is an explanation, I just can't see it yet.
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01-05-2017, 10:29 PM | #17 | |
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Re: Don"t touch that bolt
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01-05-2017, 10:54 PM | #18 | |
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Re: Don"t touch that bolt
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01-06-2017, 12:49 AM | #19 | |
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Re: Don"t touch that bolt
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01-06-2017, 05:01 AM | #20 |
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Re: Don"t touch that bolt
Wow. You guys really get into it. what a passionate group!
Yes the plug has been replaced with a regular bolt and nut - though I didn't realize it had been a plug. It was holding the pump in place. 1) the mechanic that dismounted it said so and 2) there are bolt bite marks on the flat that looks like it was made to hold the pump in place. it will be backed off or replaced when re-installed. |
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