Master Cylinder

[dennisbwrs1]

Anyone know where to find the Master Cyl. on a 1977 Dodge Champion motorhome?

[BFlinn181]

If it's not directly in line with the brake pedal push rod in front of the firewall, it would be mounted underneath along the frame rail in front of the left front tire. It should be found by finding the large round brake booster chamber mounted to the master cylinder.

[KSagal]

I found mine by following the linkage from the back of the brake pedal.

In cars, this usually goes forward, thru the firewall to the engine compartment.

On my 84 Coachman class c this was true. Under the hood where I expected it.

On my 88 Fleetwood Southwind, the linkage went straight down thru the floor, and the master cylinder was mounted inside the driver's side front wheel, on the frame of the vehicle itself.

Again, the linkage from the brake on your vehicle is likely to go thru the floor or firewall directly to the master cylinder.

Good luck.

[TQ60]

Also possible to have slave units further back.

Our 74 had main that activated secondary units.

All have vacuum boosters.