I know you've probably moved on, but it you need more info on the Hydrovac maybe the 1955-2nd Shop Manual write-up will help.

It's on the same web site as the other manuals. Here's the link;

https://chevy.oldcarmanualproject.com/shop/1955truck2/55ctsm0526.htm

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD