BrakeMaintenance
AdjustingtheParkingBrake
ServiceInterval:Every25hours
Every200hours
1.Disengagethebrakelever(leverdown).
2.Measurethelengthofthespring.Themeasurement
shouldbe2-3/4inch(70mm)betweenthewashers
(Figure58).
3.Ifanadjustmentisnecessary,loosenthejamnut
belowthespringandtightenthenutdirectlybelow
theyoke(Figure58).Turnthenutuntilthecorrect
measurementisobtained.Tightenthetwonuts
togetherandrepeatontheoppositesideoftheunit.
4.Turnthenutsclockwisetoshortenthespringlength
andcounterclockwisetolengthenthespring.
5.Engagetheparkingbrake,leverup.
6.Measurethedistancebetweenthespringbracket
andtheadjustingnutunderspringbracket.The
measurementshouldbe1/4-5/16inch(5-8mm)
(Figure58).
7.Ifanadjustmentisnecessary,loosenthejamnut
directlyabovethetrunionroller.Turnthelock
nutbelowthetrunionrolleruntilthecorrect
measurementisobtained(Figure58).
8.Tightenthejamnutdirectlyabovethetrunionroller
(Figure58).
Note:Ifthe1/4-5/16inch(5-8mm)cannotbe
achieved,removeapinfromeitheryokeattheends
ofthebrakerod.Adjustthelengthoftherodso
1/4-5/16inch(5-8mm)canbeachievedandinstall
thebrakerod.
Figure58
1.Brakelever-engaged
7.1/4-5/16inch(5-8mm)
2.Brakelever-disengaged
8.Springbracket
3.Spring,2-3/4inch(70mm)
9.Locknutbelowtrunion
roller
4.Jamnutabovetrunion
roller
10.Brakerod
5.Nutbelowspringbracket11.Yoke
6.Trunionroller
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