Navistar International LT Series - Hookup; Un-Hook

Operation
Tolockthefthwheeloncethedesiredpositionisreached,press
thelowerportionoftheswitch.Theswitchindicatorwillturnoff
whenthefthwheelislocked.
NOTE:Afastashing(twicepersecond)switchindicator
signiesaprobleminthefthwheellocksystem.
Hookup
1.Fifthwheeljawsmustbeopenedfully.
2.Tiltfthwheelbacktopreventbodydamagewhen
tractorisbackedundertrailer.
3.Blocktrailerwheelsandbesuretrailerspringbrakesare
adjustedandapplied.Neverchaseatrailer.
4.Makesurebrakehosesandlightcordsareclearofthe
fthwheel.
5.Backtractorsquarelyundertrailer,engagingfthwheel
jawsontrailerkingpin.Alwaysbackslowly,makingsure
trailerisneithertoohighnortoolow.Avoidbacking
undertrailerfromanangle.
6.Connectserviceandparkingbrakehosesandtrailer
lightconnector.RefertotheWarninglocatedinthe
Tractor-TrailerConnectionsinformation.Usea
three-pointstancewhenconnectinganddisconnecting
trailer.
7.Inspectfthwheeljawstobesuretheyhaveclosedon
trailerkingpinandthetrailerplateisrestingsecurelyon
thefthwheel.
8.Besurethecouplerreleaseleverisinthelocked
position.
9.Chargetrailerbrakesystem.Settrailerbrake,either
withthehandvalveortractorprotectionvalve.Pull
againsttrailerforanadditionalcheckofhookup.Donot
pullhardenoughtodamageorstraintheequipment.
10.Settractorparkingbrakesandfullyraisetrailerlanding
gear.RefertoBrakessegmentofthissectionfor
OperationofParkingBrakesandTrailerBrake.
11.Checkoperationofalltrailerlightsandcorrectfaulty
lights.
Un-Hook
1.Trytokeeptractorandtrailerinstraightline.
2.Applytractorandtrailerparkingbrakes.
3.Lowertrailerlandinggear,makingsureitisonsolid,
levelground.Theweightoftrailermustbeonlanding
gear.
4.Blocktrailerwheels.
5.Disconnectbrakehosesandlightcords.Besurehoses
andcordsareclear.
6.Pullcouplerreleaselevertodisengagefthwheeljaws.
7.Releasetractorparkingbrakes.
8.Pulloutfromtrailerslowly,allowinglandinggeartotake
loadgradually.
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