2nd Gen Non-Engine/Transmission 3/4 ton to 1 ton brake cylinders.. how hard?

[C. Harlan]

I am about to tackle this. is there anything I need to know??? any replies would be appreciated!



-Chris-

 

[Matt42]

Changing rear cylinders

If you have ever done any drum brake work, you should have no trouble. The most difficult part is bleeding the brakes. I use a bleeder made for a 1940 LaSalle.



Before you buy new cylinders, though, make sure that yours doesn't already have them. In the late 1990s, D-C changed the setup so that the 3/4 ton got 1 ton rear cylinders. I cannot remember which year was the change, since (1) it didn't affect my 1996, and (2) my memory is awful.



One way to check this is to go to a decent parts store. If the 3/4 ton and 1 ton use different part numbers for your year, buy a set of the cylinders for a 1 ton. If they use the same number, don't bother.

 

[Cooker]

I think 1998 was the year of the changeover to the larger cylinder from the factory, but not all 98's had the larger cylinders.

 

[Matt42]

I thought it was about then, and maybe a midyear change. When I swapped mine out, the difference was astounding. It stopped better, and quit pulling to one side or the other. I wish I had done it the day I drove it off the dealer's lot, except it was dark when I signed the last paper.

 

[C. Harlan]

is it a PITA to bleed these out???? I got short on time, and have to do it tomorrow.



-Chris-

 

[chrleb1]

Mine was is a 98 12V and it already had the 1 ton brake cylinders on it already. You might want to check that before you go by some new ones. Run the part #.

 

[ProspectorTim]

Originally posted by charlan

is it a PITA to bleed these out???? I got short on time, and have to do it tomorrow.



-Chris-

Do yourself a favor and go buy yourself a Mityvac.



Note that the Harbor Freight Tools has it MIS-spelled as Mightyvac!

 

[Cooker]

FWIW - I think a pressure bleeder is the way to go: http://www.motiveproducts.com/index.htm