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Two Speed Axle Shift Control Valve Construction and Operation
#1576905 05/09/2025 2:56 AM
Joined: Mar 2004
Posts: 6,214
Silver Spring, MD
M
Mike B
Offline
'Bolter
Mike B
'Bolter
M Offline
Joined: Mar 2004
Posts: 6,214
Silver Spring, MD
I found the 'Construction and Operation of the Two Speed Axle Shift Control Valve' manual in my 1956 Chevrolet Product Data Book and thought those with the 2-speed vacuum shift rears might like to see it! laalaa

Mike B smile
Attachments
PXL_20250509_012025255.jpg (51.61 KB, 60 downloads)
PXL_20250509_012048500.MP~2.jpg (27.71 KB, 59 downloads)
PXL_20250509_012114966.jpg (42.96 KB, 59 downloads)
PXL_20250509_012149186.MP~2.jpg (31.03 KB, 59 downloads)
PXL_20250509_012207620.jpg (51.87 KB, 59 downloads)
PXL_20250509_012239810.jpg (65.99 KB, 59 downloads)
PXL_20250509_012502801.MP.jpg (43.68 KB, 60 downloads)
PXL_20250509_012537063.jpg (71.43 KB, 60 downloads)

Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD
Re: Two Speed Axle Shift Control Valve Construction and Operation
Mike B #1576919 05/09/2025 1:03 PM
Joined: Feb 2016
Posts: 1,989
Southeast Michigan
7
78buckshot Offline
'Bolter
78buckshot
'Bolter
7 Offline
Joined: Feb 2016
Posts: 1,989
Southeast Michigan
Thank you Mike, that is a nice piece of info. I sourced my 2 speed from member DougH, the pig and valve were a direct fit for my truck. I disassembled the valve prior to mounting it, cleaned and lubed it, working very nicely and didn't have to replace any interior parts.

1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
Re: Two Speed Axle Shift Control Valve Construction and Operation
Mike B #1577020 05/10/2025 3:34 PM
Joined: Feb 2010
Posts: 476
JAX. FL.
C
Chris's 46 / 515 Offline
'Bolter
Chris's 46 / 515
'Bolter
C Offline
Joined: Feb 2010
Posts: 476
JAX. FL.
The diff looks similar to my 46, but my valve is dash mounted and a sealed unit, no cable.

1946 C.O.E. with a Holmes Traffic King Wrecker

Moderated by  69Cuda, Super55 

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