The brake proportioning valve above the rear diff allows more brake pressure to the rears when a load is carried.
Type: Posts; User: 7mmsaum
The brake proportioning valve above the rear diff allows more brake pressure to the rears when a load is carried.
Wow
Check your brake booster vacuum level against factory specs
Inlet manifold vacuum in a diesel is virtually nonexistent so they use a vacuum pump, often piggybacked to the back of the alternator.
...