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Click on image for the lowdown. 
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7 members (fonz8261, Rexville48, 1955 1 Series, Peggy M, mk72, Shardean, 55shaker),
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guests, and
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robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,022 Posts1,055,387 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jun 2008 Posts: 238 Shop Shark | | Shop Shark Joined: Jun 2008 Posts: 238 | If our SVFD 1st Engineer doesn't get around to reading your post in a few days - you might give - Mikestem - a PM and ask him . I got my Barton pump manual from him and he is more familiar with these pumps than I am . I have a older model U40 but have yet to get the chance to fool with it . You might get some answers if you read the post " need a definition " in this fourm . ED H | | |
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