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

apr. 25, 2024 15:27 Aftur á lista

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

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 Fimmta hjól 37C viðgerðarsett kerruhlutir

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

 

Ef þú ert með rennibraut fimmta hjólið, 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.

Ef dráttarvélin þín er með færanlegt fimmta hjól, verður rofi fyrir aftan stýrishúsið til að opna það.

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

Hvernig á að færa fimmta hjólið sem rennur

  1. Gakktu úr skugga um að kerrubremsurnar séu notaðar og að festivagninn sé tryggilega tengdur
  2. The trailer must be in line with the tractor unit – you can cause damage if it isn’t
  3. Opnaðu fimmta hjólið með því að nota rofann
  4. Færðu drifhjólið áfram til að breyta þyngdarjafnvæginu meira á drifhjólin og öfugt
  5. Settu handbremsuna á dráttarvélina
  6. Farðu út og læstu fimmta hjólinu
  7. Athugaðu það aftur á voginni

Þegar þú hefur sleppt kerrunni skaltu setja fimmta hjólið aftur í venjulega stöðu.

Hvað á að athuga

  • 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
  • Gakktu úr skugga um að einingin sé í viðhaldi reglulega og að hún sé með næga fitu
  • 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.

Geturðu hreyft fimmta hjólið þitt?

Ekki er hægt að færa öll fimmtu hjólin á meðan þau eru tengd við kerru. Þetta fimmta hjól er hægt að færa, en aðeins með því að losa boltana og renna því fram eða aftur.

Deila

Ef þú hefur áhuga á vörum okkar geturðu valið að skilja eftir upplýsingarnar þínar hér og við munum hafa samband við þig fljótlega.


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