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2 speed rear end question

Posted By D2Denny Thursday, February 17, 2022 3:50 AM
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andremariyo
 Posted Wednesday, March 23, 2022 9:12 PM
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Geoff Weeks
 Posted Monday, February 21, 2022 7:28 AM
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The U series (under Rockwell but were Timken) were made in both front loading and top loading designs. The ring and pinion (actually bevel gear) stays the same but the 1st stage reduction can be mounted out front or on top. My guess is that is what you have. The Timken design wasn't limited to what planetary gearset would fit inside a ring gear like the Eaton design so you could have wide ratio two speed with a Timken. It was that way until Eatons patent ran out.
Never had one or was around one however, they are mostly found in older stuff from the 40's and 50's.
D2Denny
 Posted Monday, February 21, 2022 12:46 AM
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Geoff:
Not in the catalog but probably is a Timpkin.

Dennis
Geoff Weeks
 Posted Friday, February 18, 2022 9:49 AM
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Timken (later Rockwell later Meritor). Those are the only top loaders outside a Mack that I know of and the only other mfg to make two speed axles for trucks.
You might look through the Weller diff catalog and see if you can ID it

weller-diff-id-catalog.pdf (wellertruck.com)
The Timken U series was made in both top loader and front loader versions The catalog only show the front load versions but they are basically the same.
Friday, February 18, 2022 9:58 AM by Geoff Weeks
D2Denny
 Posted Thursday, February 17, 2022 3:50 AM
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A 1969 Freightliner 2 axle tractor has recently come up for sale in Ohio. Believed to be a former CF tractor as it has the "jeep" axle alignment block and air line connections on the rear crossmember. Advertised as a 2 stick transmission, in actuality it has a manually shifted 2 speed rear axle and a 5 speed trans. The carrier drops in from the top. Anyone have an idea as to the manufacturer and model of this diff assembly?

Dennis

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