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Roller Brake Testing  Rate Topic 
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 Posted: Thu Jun 12th, 2008 06:16 pm
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David
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Mana: 
It sounds like the VE had a lack of confidence at the last moment. the Regulations do make mention to the pipe diameter being reduced by a 1/3, but this is not always possible to see due to corrosion, or as somebody said previously hidden pipes over fuel tanks etc. Any pipes which cannot be seen really a note on a VT32 should be made, and after careful scraping of the effected area a note on your VT40 until the RBT has been concluded, if its not leaked then issue a VT32, sounds reasonable to me.

David:D

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 Posted: Thu Jun 12th, 2008 07:57 am
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removalizer
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I spoke to a VE about corroded brake pipes and he said if you were not sure about the level of corrosion stand on the brake pedal during RBT and if it doesn't burst pass it, but in the next breath he said if it was "tree bark" then fail it.

Crikey talk about Grey areas.

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 Posted: Wed Jun 11th, 2008 10:53 pm
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castrolrob
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dont think ive ever had a brake pipe burst that was"clearly visible"even tho ive known theyre shagged(vectra/mondeo/astra/ducato et al)but hey,we still liable even if they aint visible....

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 Posted: Sun Jun 8th, 2008 10:20 pm
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Wesley
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There we go, uploading of photo`s causing a bit of head scratching.:D........lol.

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 Posted: Sat Jun 7th, 2008 02:02 pm
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big..E.
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RFR wrote: Hi David,

              Been up all night waiting, and waiting, and waiting. You Don't work for a train company do you?

Cheers

RFR:D

No must be a Bus Company,wait all night for one and then two will  come together;)

Last edited on Sat Jun 7th, 2008 02:02 pm by big..E.

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 Posted: Sat Jun 7th, 2008 11:00 am
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RFR
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Hi David,

              Been up all night waiting, and waiting, and waiting. You Don't work for a train company do you?

Cheers

RFR:D

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 Posted: Sat Jun 7th, 2008 12:04 am
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Wesley
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David, In Anticipation,

And maybe a couple of days off,..lol,;) Looking Forward to your explanation, As in initial posting of this subject, and subsequent post by me? 

Thanks, Wes. 

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 Posted: Fri Jun 6th, 2008 10:15 pm
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big..E.
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Come on then David spill the beans...;)

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 Posted: Fri Jun 6th, 2008 10:15 pm
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Wesley
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David wrote: Hi Wesley

This posting is somewhat dated now about RBT testing, but have only just read what you said, with your permission I would like to upload a picture or two and give a brief explanation regarding MOT RBT Testing vehicles.

Please advise

David:D

Hi David, just read post, Yeah Go ahead,;)

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 Posted: Fri Jun 6th, 2008 09:33 pm
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David
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Thanks for the reply

I have a couple of really good examples showing why it is important not to carry out a RBT before an underside inspection

Cheers David:D

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 Posted: Fri Jun 6th, 2008 08:47 pm
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keithd
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I always test the vehicle first for one reason - there may be something become apparent during the test that makes doing a RBT unsafe or not suitable. Piece of metal or sharp object stuck in a tyre that could make a nice mess of your rollers is one example. LSD fitted non-standard - odd car thats been converted to 4wd (sierras common) glad to say few and far between now but things like this or something worse like susspension problems.

 

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 Posted: Fri Jun 6th, 2008 07:14 pm
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David
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Hi Wesley

This posting is somewhat dated now about RBT testing, but have only just read what you said, with your permission I would like to upload a picture or two and give a brief explanation regarding MOT RBT Testing vehicles.

Please advise

David:D

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 Posted: Mon Feb 11th, 2008 11:18 pm
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Wesley
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The reason I asked was, We had a plastic coated concealed brake pipe on a Renault Megane, Burst while carring out the RBT. it was located above the heat shield for the rear silencer.

I personally throughout a normal working day, due to daily circumstances, carry out the RBT on different vehicles both on the way in or on the way out.

This particular vehicle was RBT on the way in, Highlighting an Issue requiring further investigation during the rest of the normal test procedure.

The "Pipes" are plain Renault green or black in colour, until they dissappear over the heat shield, where they are coated in thicker black plastic.

After applying brake pedal pressure to attain Maximum brake readings, this issue became apparent.

If under normal brake application by Your Presenter whlist normal required checks are inspected, applies the brakes, Then this issue, May Not come to light until the RBT is carried out, Requiring a further visit to the inspection ramp.

Wes.

 

 

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 Posted: Sat Feb 9th, 2008 10:18 pm
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Johnboy
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Mana: 
The only difference I can think of, is if you examine the car and then do the RBT last, you can check for any dodgy brake pipes or damaged or under inflated tyres that could cause you grief on the rollers.

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 Posted: Thu Feb 7th, 2008 10:48 pm
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Wesley
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You are allowed by VOSA to carry out a  RBT on the way in, or on the way out.

What are the advantages and or disadvantages of each option?

Wes.

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