The hand-priming lever on my LD10 fuel pump has a lot of free movement and the diaphragm is only moved at the very end of its travel.
Intuition tells me that it's badly worn and shouldn't have any free play, but I have no experience of the AC Delco pump... maybe it's deliberate?
Can anyone confirm whether the lever starts working as soon as it's moved from the horizontal or does nothing happen until almost the end of its stroke?
(I realise that the engine must be turned over until the cam isn't operating the lever, otherwise the diaphragm will already be part pulled down.)
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Always look at "ACTIVE TOPICS" to see all posts in date & time order as they are sometimes moved; or look at "Your Posts".
Please add Reg. nrs. when posting a photo or anything about a car as this will help searches. Don't add punctuation next to nr. as this negates search.
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LD10 fuel pump priming lever
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- Posts: 307
- Joined: Mon May 03, 2021 8:34 am
- Location: Bognor Regis
Re: LD10 fuel pump priming lever
Have you tried turning the engine over a quarter or half a turn? It could be that the camshaft is in a position where it will only allow the pump to work at the end of its stroke.
Nick
Nick
"Nick - do you think you will ever put that old car back together again?"
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- Posts: 307
- Joined: Mon May 03, 2021 8:34 am
- Location: Bognor Regis
Re: LD10 fuel pump priming lever
I've had the pump off the engine and verified the free movement of the arm before it begins to move the diaphragm rod... it's nearly all of its travel.
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- Posts: 307
- Joined: Mon May 03, 2021 8:34 am
- Location: Bognor Regis
Re: LD10 fuel pump priming lever
Unfortunately, the hand-priming arm is rivetted at each end of its spindle and not removeable. The play is between the arm and the spindle.
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- Posts: 307
- Joined: Mon May 03, 2021 8:34 am
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Re: LD10 fuel pump priming lever
To wrap up this thread...
By going through all the pictures of mechanical pumps for sale on Ebay I found a number of pumps for other vehicles that used the same lower aluminium casting as the type T.
I bought a type U pump intended for an Austin/Morris commercial vehicle with a suitable lower casting, swapped the Lanchester arm and the upper section of tmy pump and now I have an as-new pump with a fully-functional priming lever.
By going through all the pictures of mechanical pumps for sale on Ebay I found a number of pumps for other vehicles that used the same lower aluminium casting as the type T.
I bought a type U pump intended for an Austin/Morris commercial vehicle with a suitable lower casting, swapped the Lanchester arm and the upper section of tmy pump and now I have an as-new pump with a fully-functional priming lever.
Re: LD10 fuel pump priming lever
^ that is impressive research