TableofContents
Interior.............................................................150
InteriorLightBarCleaning..................................150
UpholsteryCare..............................................150
Flooring.......................................................151
Exterior............................................................151
WaxingorPolishingVehicles...............................152
CrossingArmCleaning.....................................152
Section12–Maintenance
Preface............................................................153
MaintenanceGuidelines.........................................153
SupportingYourVehicleforService............................155
Pre-TripandPost-TripInspections.............................155
ChassisLubrication..............................................155
EngineCompartmentFluidCheckPoints......................156
Air-OperatedPassengerDoorAdjustments...................157
DoorOpeningandClosingSpeedAdjustmentPoints...157
PressureRegulatorAdjustment............................157
OpeningSpeedAdjustment................................158
ClosingSpeedAdjustment.................................158
ElectricallyActuatedEntranceDoorAdjustment.........158
Axles...............................................................158
FrontAxle–InspectionandLubrication...................158
FrontAxle–NormalMaintenance.........................159
FrontAxle–Alignment......................................159
RearAxle–InspectionandLubrication...................159
Body...........................................................160
Brakes.............................................................160
GeneralInformation.........................................160
AirBrakes....................................................161
BrakeInspectionandAdjustment..........................161
AirDryer......................................................163
AirDryerDesiccantReplacement..........................163
AirDryerPurgeValve.......................................163
AirDryerHeater..............................................163
AirReservoir/TanksMoistureDraining...................163
ABSConnectionsandSensors............................164
HydraulicFullPowerBrakes...............................164
BrakeInspectionandAdjustment..........................164
BrakeFluidLevel............................................164
FluidPrecautions............................................165
BrakeLines,Hoses,andFittings...........................165
HydraulicBrakeFluidAccumulators.......................165
ABSConnectionsandSensors............................165
ChassisInspection..........................................165
Electrical...........................................................166
Alternator–Starter–BatteryTest............................166
TerminalInspection–Cleaning–CorrosionProtection....166
AccessoryFeedConnections..............................166
Engine.............................................................166
General.......................................................166
PSI8.8LLPGEngine........................................167
ScheduledMaintenance....................................167
AirInductionSystem........................................167
AirCleanerElementService...............................168
AirRestrictionGaugeService..............................168
Chassis-MountedChargeAirCoolerandRadiator
CoreInspectionandCleaning..............................170
CoolingSystem..............................................171
Gravity-FillCoolantMethod(PSI8.8LLPGEngine).....171
FillingInstructions...........................................171
CoolantConcentration......................................172
ContaminationofCoolant...................................173
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