Menu

Slow punctures on a Mercedes C class in PO22

Today I was called out to a customer with a Mercedes C class that had a slow puncture. When I met the customer at his home, he told me that his TPMS warning light kept coming on, he kept pumping up his tyres but since he only uses the car occasionally, he couldn't remember which tyre was the problem.

I took out my air gauge to check all the tyres and found that both tyres on the offside were approx. 15 psi down, so it was decided that I would check them both.

I soon had the car jacked up and took off the front wheel, a check around the outside did not show any obvious punctures. The next check was to squirt leak detector all around the valve and rim areas. This soon showed that there was a leak around the rim.

The tyre was then deflated and using the bead breaker in the van, I loosened off the tyre and then removed it from the rim. Checking the rim showed up the problem, there was corrosion which had lifted the paint inside the rim allowing air to escape. The next job was to remove any loose paint, then using a wire brush, clean up the rim getting it back to bare metal. Once clean, I applied a bead seal to the rim, put in a new valve and refitted the tyre. It was then inflated to the correct pressure and balanced before putting back on the car.

Now to check out the rear tyre, the jack was moved to the back and the car raised. The wheel was removed from the car and taken into the van, a quick check around the tyre soon showed a screw in the tread area. This would be a simple repair, the tyre was deflated and using the bead breaker the tyre was taken off the rim.

The screw in the tread was removed and a 6mm hole was drilled through the tyre, a plug patch was then glued in place sealing the hole. A quick check around the inside showed that there had been a previous puncture, which had been temporarily repaired with string and glue. This is not something that should be left, as it is a 'get you home' repair only. So I removed the string plug and glued in a proper plug patch in its place. A new valve was put in the rim, the tyre was refitted and the wheel balanced. The wheel was then bolted back on the car, and the bolts on both wheels were then torqued to the correct settings.

Once finished I was then able to complete the tyre report, and the invoice before taking a payment by debit card using our on board card reader.

 


Buy Tyres Online Here


 
 
UK Mobile Tyre Service

check coverage
in your area

 

REQUEST A CALL BACK

 
Need Tyres Today? Call 0333 444 5454
 
Hometyre van driving on the road

Winter to summer tyre swap over? Book your advance fitting date now!

HometyreGroup

Join the conversation
on Twitter

Follow us

YouTube

Instagram Like Us on Facebook Follow us on Twitter

Need help choosing? Call 0333 444 5454