9999 MIDLAND ROSS MIDLAND ROSS Recalls (2)

Campaign:: 76E006000 on 10/11/1979
Component:: Service brakes, hydraulic:foundation components:master cylinder
Affected:: 3,880
Notes:: Part numbers c-2904 (model 600) and c-2904-f (model 450).possibility of afailure of the synchronizing valve to adequately seal the brake fluid fromleaking or being drawn into the vaccuum section of the valve.this conditioncan cause the brake fluid to be depleted from the master cylinder reservoir andresult in loss of brakes which could cause vehicle crash without prior warning(correct by inspecting andreplacing with a new re-manufactured valve assembly).
Campaign:: 77E026000 on 10/11/1979
Component:: Service brakes, hydraulic:foundation components
Affected:: 67
Defect:: On the involved vehicles, the "o" ring seal which the check valve seals on in the power piston of the hydraulic cylinder may fail. this failure can cause loss of brake holding capability but will not affect the performance of the service brakes.
Correction:: Dealer will inspect and will replace the existing unit with a new one, when available, or refund the purchase price.
Notes:: Vehicle category: trucks.system: service brakes; hydraguard operational holding brake, model c-4703.consequences of defect: continued use of the operational holding brake couldresult in failure of the unit, loss of vehicle control, and an accident.note: owner is warned to discontinue using the holding brake.