InspectionGuide
12.Doors:Ensurewindowsarecleanandoperateproperly
andsmoothlyinbothdoors.
13.Windshieldandwipers:Checkwindshieldforcracks,
dirt,illegalstickersorotherobstructionstoview.Ensure
wipersandwindshieldwasherarefunctioningproperly.
14.Lightingindicators:Checktoseethatinstrumentpanel
indicatorsilluminatewhencorrespondinglightsare
turnedon.
15.Heater/defroster:Checktobesurethatheater/
defrosterisworking.Verifyadequateairowfrom
louversandvents.Operatetemperatureandmode
controlstoverifyproperoperation.
16.Airbrakecheck:Checktheairbrakesinthefollowing
manner:
a.Installwheelchocksifnecessary.Pushinparking
brakeandstartengine.
b.Checkforaircompressororgovernorcut-out
pressureat125-135psi(862-931kPa).Shift
intoalowgear,andgentlypullagainstserviceand
parkingbrakesseparatelytomakesuretheyhold.
c.TurnengineOFFandturnignitionbackON.
d.Withoutbrakepedalapplied,noteairpressuredrop
foroneminute.Itshouldbelessthan2psi(14kPa).
e.Depressandholdbrakepedalandensurepressure
dropsnomorethan3psi(21kPa)perminute.For
combinationvehicles,thereshouldbenomorethan
4psi(28kPa)perminutepressuredrop.
f.Steponandoffbrakepedalandcheckthatwarning
indicatorandalarmcomeonatabout60-76psi
(414-524kPa).
g.Steponandoffbrakepedalandchecktomakesure
theparkingbrakeknobspopoutfrom20-45psi
(138-310kPa).
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