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645 wheel loader
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Cash View Drop Down
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Joined: 05 Feb 2023
Location: Usa
Points: 2 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cash Quote  Post ReplyReply Direct Link To This Post Topic: 645 wheel loader
    Posted: 05 Feb 2023 at 10:01pm
I’m needing sone help with finding out if I have a 645 or 645b. Stickers say 645b there’s no serial number tags anywhere left. I’m trying to get a rear drive shaft and talked to junk yard shot him my measurements and he gave me the numbers off a 645b but the u joints would be too big for my yokes. I will add a couple pics of mine. It has the high low trans and is on the steering column, also has the the clamshell bucket. Engine serial is only tag left.

Edited by Cash - 05 Feb 2023 at 10:04pm
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 81333 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2023 at 11:01pm
check the type of fuel pump...... your new decals have a "B"... dont see that on the original number...

The Model 645B loader described



As mentioned earlier, the original Allis-Chalmers 645 was powered by an Allis-Chalmers model 3500 6-cylinder diesel.

A change was made to the engine’s fuel system in 1972 with the discontinuance of the previously used Roosa-Master fuel injection system, replaced by a Simms system.

In this configuration the engine produced 158 flywheel horsepower, slightly up on the previous engine.

Allison provided the powershift transmission, a twin-turbine “soft-shift” TT series which gave the 645B a top speed of around 23mph (37kph).



Edited by steve(ill) - 05 Feb 2023 at 11:02pm
Like them all, but love the "B"s.
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darrel in ND View Drop Down
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Joined: 22 Nov 2009
Location: Hebron, ND
Points: 8636 		Post Options Post Options   Thanks (0) Thanks(0)   Quote darrel in ND Quote  Post ReplyReply Direct Link To This Post Posted: 07 Feb 2023 at 7:13pm
Cash, I possibly would have the parts you need. I have a 645 parts machine. I think my parts machine is prior to the B
Darrel
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im4racin View Drop Down
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Joined: 12 Jun 2017
Location: Garrison ND
Points: 936 		Post Options Post Options   Thanks (0) Thanks(0)   Quote im4racin Quote  Post ReplyReply Direct Link To This Post Posted: 07 Feb 2023 at 9:47pm
Both of yours are b series. one allis and one fiat. One was converted to the old engine package.
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