Q: Broken Shackle pin and it's effect on drive

asked by on June 16, 2016

We have a LPG filling station and we normally receive 6 axle trucks for filling. The other day while filling such a truck we observed that it's shackle pin is broken. It was one damaged pin on one of the rear three axles, the middle axle. By the time we realized only 10% of the load was filled. Remember that it was a 40tonnes cargo capacity tanker. Filling was stopped. Now my question pertains to moving the truck for repairs. Is it safe to slowly drive it to the workshop. What precautions should then be taken. What effects are felt with this one compromised leaf spring. Will the other two leaf spring hold the load appropriately. Will the condition make the truck imbalance on road.

This is a question for a diesel trailer mechanic. Without seeing the vehicle, I would not attempt to tell you what is and isn’t safe. The old adage, a picture is worth a thousand words definitely applies here.

Personally, I would not be driving anything with this much weight on a highway with a compromised leaf spring. As far as will the others hold the load, there is no way for me to tell without directly inspecting it. My recommendation is to have it repaired by a mobile trailer tech. Mobile tractor repair has been around for much longer than mobile light vehicle repair. It’s the nature of owning a heavy machine. They just can’t be transported to a repair facility easily.

Look for tractor repair. If you’re not aware, a tractor is a semi-truck. This is actually what he industry refers to them as. By extension, tractor repair work on trailers as well.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Experienced Mechanic?

Earn up to $70/hr

What others are asking

Car stalls and sputters when driving
If your engine is going to have to be replaced due to using too much oil, then you may choose to try and use thicker oil (https://www.yourmechanic.com/article/why-does-motor-oil-viscosity-matter). I would not recommend it, but it is your choice. You could go...
Engine makes tapping noise, exhaust blows bluish smoke
If you are burning oil and you have a noise in the engine, then you need to have the noise checked to see if it is coming from a piston. You may also have valve problems and oil getting through...
Steering wheel locked while going around curve
I would suspect that the steering is electronic and something was not making contact when you were going over the bumps and caused the steering to lock. It could also be a programming issue or a steering sensor issue. Have...
Car will not start - 2007 Chevrolet Cobalt
Hey there. You may have a problem with the anti-theft system in the vehicle disabling the start circuit. You will notice the theft light on the dashboard stays on. If you do not see the theft light come on and...
Seems like a belt squeal upon cold start and gets louder with acceleration. Stops after the car is warmed.
This may be related to a squeaky belt. In cold weather these belts will make this kind of squeal when the rubber belt material is cold. The cold weather causes rubber to be less pliable and a bit brittle. As...
Had an oil Leak repaired. Then a tune up. Now there's a puddle leaking from my car. What happened?
The 750 is a great car, but when it gets some age and miles it can become pretty high maintenance. There is no way I can tell you what is leaking from here at my desk, the car will have...
Wheel Bearings
This may be a sign of failing or worn out wheel bearings. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race. Both the surface of the rollers...
I have a 2007 Audi RS4; it usually refuses to start.
If you can hear the relay clicking, then you may have an issue with the starter. Starters often become tempermental before they fail altogether, so the trick is to diagnose it while it is in failure. If you can access...
Why would my car drive at 0 rpms ? It's a 2011 Hyundai Accent.
Hello, thank you for writing in. The gauge on your dashboard that tells you the engine speed, measured in RPMs, is called the tachometer. If just the tachometer is not working, it may be getting a weak signal (or no...

Related articles

4 Essential Things to Know About Your Car’s Check Engine Light
The Check Engine Light turns on when there's an engine problem. A bad oxygen sensor or failed spark plug are common causes for the Check Engine Light.
How to Lower a Vehicle’s Suspension
One of the most popular car modifications done today is lowering a vehicle’s suspension (https://www.yourmechanic.com/article/how-car-suspension-system-works). A vehicle’s suspension is...
P0434 OBD-II Trouble Code: Heated Catalyst Temperature Below Threshold (Bank 2)
Trouble code P0434 means the computer has detected a temperature variance in the catalytic converter.