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D2 transfer pump rebuild tools

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2 months 3 weeks ago #230014 by neil
Replied by neil on topic D2 transfer pump rebuild tools
Eddie, would worn packings materially affect fuel pressure? (once fully primed and running)

Cheers,
Neil

Pittsford, NY

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2 months 3 weeks ago #230025 by edb
Replied by edb on topic D2 transfer pump rebuild tools
Hi Neil,
the 212 had fuel pressure with needle vertical in the white both before and after rebuild. It had new filters, stretched spring and good fitting gears in main body with lapped cover.
Did not bother going any further as the air bleed issue was resolved and it started easily and ran fine for a show piece. Gauge may be the issue??
Cheers,
Eddie B.

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2 months 3 weeks ago #230031 by neil
Replied by neil on topic D2 transfer pump rebuild tools
Could be - I'll compare it to another and see what I get - thanks!

Cheers,
Neil

Pittsford, NY

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2 months 3 weeks ago #230033 by mog5858
Neil, I would say the packing would only affect your pressure if it was really leaking around the shaft and out past the gear. in a gear, pump end play can be a real killer for presser as it allows fuel to bypass. if it is leaking around your shaft you could have worn bushing in your gear housing or a worn shaft. changing the packing is easy and simple to start with.

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2 months 3 weeks ago #230038 by neil
Replied by neil on topic D2 transfer pump rebuild tools
Good point Martin and I thought about that after posting to Eddie. I'll get the end plate shaved flat if it has any marks as that might give me another half pound. It's interesting how it misses when the pressure is low - like a gas engine running on 3 out of 4 - makes a real banging sound. Once the pressure came up, it stopped the banging and ran smoothly and quietly

Cheers,
Neil

Pittsford, NY

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2 months 3 weeks ago #230042 by edb
Replied by edb on topic D2 transfer pump rebuild tools
Seems this BB swallowed my last answer to you Neil before I could post it s, here we go again.
The end clearance of the gears to the cover we used to aim for was around 0.001" If the pump was a clients we put new gears in if the end clearance to the cover was more than 0.002"--for a restoration low budget machine you could lap some off the gears to get them both the same length and then skim a bit off the body to get the 0.001" clearance.
We always treated each gear as if it had burrs and so de-burred them just before fitting them--seen many finely finished surfaces ruined by burrs on gear ends and tooth surfaces.
Cheers,
Eddie B.

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2 months 3 weeks ago #230094 by greghill25
That would be an interesting info, Eddie! Hope you'll be able to share.

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1 month 3 weeks ago #231025 by Mike Meyer
Refreshing this transfer pump thread for our new member and his D2

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