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Abr. 25, 2024 15:27 Volver á lista

Por que moverías unha quinta roda ao remolcar un semirremolque? Quinta Roda

You’ve hooked up your trailer and you’ve headed to a weighbridge and the bad news is that your front (steering) axle is overloaded. An overloaded axle is both illegal and dangerous. It can overheat your tyres, make your braking performance much worse, affect your steering and even cause a jackknife if it’s bad enough.

Whoever loaded the trailer has put too much weight at the front, but you don’t have any ability to change that, so what can you do?

 

JOST TAPE Kits de reparación de quinta roda 37C pezas de remolque

Why would you move a fifth wheel when towing a semitrailer? Fifth Wheel

 

Se tes un deslizamento quinta roda, you can move the load backwards so that more weight is over the tractor unit’s drive axles.

Why would you move a fifth wheel when towing a semitrailer? Fifth Wheel

It’s common for drivers to move the fifth wheel, not only for weight distribution, but also to get the best aerodynamic performance from the vehicle. A smaller distance between the cab and the trailer makes for better fuel economy, but it’s not always possible to do this if the front of the trailer is heavy because too much weight will be over the steering axles.

Add to this the complication of full vs empty fuel tanks (diesel weighs around 8 pounds per gallon) and you’ll see it’s difficult to calculate an exact weight distribution.

Se a súa tractora ten unha quinta roda móbil, haberá un interruptor detrás da cabina para desbloqueala.

Why would you move a fifth wheel when towing a semitrailer? Fifth Wheel

When the fifth wheel is unlocked, it can slide on this notched rail. Each notch represents a certain percentage of weight distribution forwards and backwards – you’d need to check the manufacturer’s documentation to know just how much.

Why would you move a fifth wheel when towing a semitrailer? Fifth Wheel

Why would you move a fifth wheel when towing a semitrailer? Fifth Wheel

Como mover a quinta roda deslizante

  1. Asegúrese de aplicar os freos do remolque e de que o semirremolque estea ben conectado
  2. The trailer must be in line with the tractor unit – you can cause damage if it isn’t
  3. Desbloquee a quinta roda usando o interruptor
  4. Move o motor principal cara adiante para cambiar o equilibrio de peso máis nas rodas motrices e viceversa
  5. Aplique o freo de estacionamento na tractora
  6. Sae e bloquea a quinta roda
  7. Comprobeo de novo na báscula

Unha vez que deixes caer o remolque, volve a quinta roda á súa posición normal.

Que comprobar

  • Before you try to move the trailer, check both slider plunger pins are out (there’s one either side)
  • Once you’ve moved the trailer, ensure that both slide plunger pins have moved back in. If they won’t go back in, move the tractor unit forwards or backwards slightly to take any pressure off the connection
  • Comprobe que a unidade é revisada regularmente e ten graxa suficiente
  • Do a tug test before you drive away – if the pins are unlocked, the first time you brake, the trailer will slide forward and break the coupling.

Podes mover a quinta roda?

Non todas as quintas rodas se poden mover mentres están acopladas a un remolque. Esta quinta roda pódese mover, pero só desfacendo os parafusos e deslizándoa cara adiante ou cara atrás.

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