Specifications
276OPERATION
DANGER
Neverreleaseordriveatruckthathas
abrakediscrepancy—nomatterhow
minor—untilithasbeenrepaired
orcorrected.Failuretorepairbrake
discrepanciescanresultincompromised
brakeefciencyandmayleadtolossof
controlofthevehicleresultinginsevere
personalinjuryordeath.
Airpressuresinthetwocircuitsaremonitoredbytwopressuregaugesontheright
sideoftheinstrumentcluster.Theprimary(rear)brakecircuitgaugeismarkedwith
an"R"withinasymbolandthesecondary(front)brakecircuitgaugeismarkedwith
an"F"withinasymbol.Thetwopointersshouldregisterequalornearlyequal
pressure.Byobservingthegaugepointers,theoperatorisforewarnedintheeventofa
pressuredropineitherorbothofthecircuits.