How else can I test and adjust the Load sensing Proportioning and By-Pass Valve (LSP & BV)? (By adjust I mean the process without the SST, not the actual physical adjustments - I know how to do that from reading the FSM). The spec states 636 ± 71 psi on the rear brakes with the Rear axle load (1,874 lb). Note: these specs are for 4x4.
How to adjust rear Load Sensing Proportioning and By-Pass Valve (LSP ...