Rather than all this wasted money and things like that, why didn’t they just put the bloody trailer brake button next to the suzi’s??
I think the reason trailer brakes aren’t always used is laziness. I get whinged at all the time by shunters in lots of different companies and yards because I use the trailer brake, they then have to walk 1/2 way down the trailer to release it, which is obviously too much effort when you see how many just drag the trailer around with brakes still on.
No, if drivers knew what they were doing it would never happen. Everyone is trying to make things idiot proof when the real answer is teach the idiots.
Can someone please explain to me why you need to put on the park brake?
kitbuilder123:
No, if drivers knew what they were doing it would never happen. Everyone is trying to make things idiot proof when the real answer is teach the idiots.
Can someone please explain to me why you need to put on the park brake?
think of the children! some can’t couple properly, hence company policy put the trailer brake on! You can still get movement between tractor and trailer and if you’ve not used air suspension to lift it up under and aligned with kingpin, Aka the split couple YOU’RE GOING TO GET SQUASHED! merry Xmas!
kitbuilder123:
No, if drivers knew what they were doing it would never happen. Everyone is trying to make things idiot proof when the real answer is teach the idiots. Can someone please explain to me why you need to put on the park brake?
2 main reasons are:
For split coupling, the trailer isn’t on the 5th wheel when you connect the lines, if the trailer park brake isn’t on, the brakes will release and you’ll be between a trailer and a unit.
Belts and braces, the idea being, if you do everything in order with trailer park brake being last, if you have forgotten to put the unit handbrake on, you’re at the trailer park brake when it starts moving so can just pull it.
Ok, I can sort of understand it for split coupling now that most trucks don’t have suzie taps anymore.
I can’t understand why drivers lift the trailer up either. If you back in straight, you only need to touch the rubbing plate and click in.
And yellow suzie first will stop all the running forward and squashing. Unless you drive a Volvo of course which if you do, you already have troubles!
kitbuilder123:
Ok, I can sort of understand it for split coupling now that most trucks don’t have suzie taps anymore.
I can’t understand why drivers lift the trailer up either. If you back in straight, you only need to touch the rubbing plate and click in.
And yellow suzie first will stop all the running forward and squashing. Unless you drive a Volvo of course which if you do, you already have troubles!
4 reasons.
1 - Some trailers have been known to leak air when parked up and when they leak air the suspension drops at the axles. When the axle height drops the pin height lifts as the trailer pivots/hinges over the legs. If the previous user has wound the legs tight to the ground then you can overshoot the pin.
2 - If you do the tug test on the pin and the legs are still grounded you can bend the legs making it difficult to wind the legs all the way up (VOSA fine anyone). It’s also an avoidable cost for the company when having to replace legs.
3 - If the legs ARE tight to the ground it makes the winding of the leg handle hard till the pressure is of even in the low gear.
4 - The grease from the 5th wheel finds its way onto the front lip of the rubbing plate, then onto the lines, then onto the drivers clothing, then into the cab/car and if the vehicle is shared with others is just plain anti social.
kitbuilder123:
I can’t understand why drivers lift the trailer up either. If you back in straight, you only need to touch the rubbing plate and click in.
also if your R send of tractor is UP in the air and trailer is sloping AWAY from you! you won’t GET CRUSHED AS IT WILL RUN AWAY FROM YOU ON THE SPLIT COUPLE if it moves!
But what I’m saying is back in under, lift the tractor unit til it touches the rubbing plate, click in to the pin, then lift the legs clear and do the tug test.
I’ve seen people with auto boxes absolutely clatter into the pin because they have the full weight of the trailer down on the 5th wheel.
Everyone’s differen I suppose.
kitbuilder123:
But what I’m saying is back in under, lift the tractor unit til it touches the rubbing plate, click in to the pin, then lift the legs clear and do the tug test.
I’ve seen people with auto boxes absolutely clatter into the pin because they have the full weight of the trailer down on the 5th wheel.
Everyone’s differen I suppose.
Misread that, I thought you meant to wind the legs right up before the tug test.