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D 2 fuel transfer pump.

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1 month 1 day ago #222496 by tomprice
After fitting new internal seals,What should i use to seal the other bits Tom Price

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1 month 23 hours ago #222518 by D4Jim
Replied by D4Jim on topic D 2 fuel transfer pump.
Here is a pic of a typical transfer pump, maybe it will clarify your question or are you referring to gaskets?


ACMOC Member 21 years
D47U 1950
Cat 112 1949
Cat 40 Scraper
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1 month 17 hours ago #222524 by tomprice
Replied by tomprice on topic D 2 fuel transfer pump.
Many thanks for the help. Cover No 19 and Body 21 and Bracket 22 don't seem to have gaskets between them. What seals them? Regards Tom Price

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1 month 15 hours ago #222533 by Rome K/G
Replied by Rome K/G on topic D 2 fuel transfer pump.
Close machined surfaces.

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1 month 7 hours ago #222539 by tomprice
Replied by tomprice on topic D 2 fuel transfer pump.
Thanks

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4 weeks 2 days ago #222543 by edb
Replied by edb on topic D 2 fuel transfer pump.
Hi,
now we know what you are asking about to be sealed--at the Dealer we used Permatex Aviation Form a Gasket #3.
It is a formulation for sealing highly finished surfaces.

www.permatex.com/products/gasketing/gask...no-3-sealant-liquid/

Hope this helps.
Cheers,
Eddie B.
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4 weeks 2 days ago #222544 by wimmera farmer
I believe the reason for no gaskets is to maintaine the very close end clearance on the pumping gears. Any extra clearance will seriously effect pumping performance. If the cover shows wear or score marks it can be relapped to dead flat but if there is wear in other places it may not help much.
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3 weeks 6 days ago #222651 by oldbeek
Replied by oldbeek on topic D 2 fuel transfer pump.
Think the new tolerance is ..002 . I measured mine with plastigauge. Just went through my manuals and cant find it. But .002 is just .001 per side clearance. Don't know why these machines didn't at least have a pre screen.

Cat 12 grader, 8T6995 running and restoring, Cat 12 grader 9K3585. parts machine, Adams leaning wheel Pull grader Mod # 22, ser#438

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3 weeks 6 days ago #222658 by edb
Replied by edb on topic D 2 fuel transfer pump.
Hi Team,
from a No12 Grader Service Manual with the D333 Engine in the Spec. sheet we are given :-
clearance between gears and cover --- 0.001"-0.0022", with a max. of 0.0035"--this is what we applied at the Dealer to all similar designed transfer pumps.
For light worked machines a bit more is likely OK.
Cheers,
Eddie B.
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