View single post by kit1958
 Posted: Sat Jan 12th, 2013 10:20 pm
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Joined: Sat May 15th, 2010
Location: The Finest Country On Earth , United Kingdom
Posts: 1099
ivorbiggin wrote:
kit1958 wrote: Its been a while since i was involved with class 7 but from mem if both front wheels lock and each rear pulls over 100kg and its unloaded its deamd tobe ok. If both p b lock what more can you do?

On class 4 rember to use the wieght from the rbt in the vts, & you are required to keep the printout.

Hope that helps

Where does it say the vehicle has to be unloaded?

Also, provided more than half of the braked wheels lock out, its a pass on efficiency. That goes for both service and parking brake

Have a read of this from the manual
"When testing service brake performance on unladen Class 7 vehicles premature wheel lock can occur resulting in less than the required brake effort being achieved. This may be due to the action of load sensing or pressure reducing equipment in the service brake system. In such cases, the service brake percentage efficiency is considered satisfactory if: (i) more than half the wheels lock, or (ii) both front wheels lock and at least 100kg (220lb) is achieved by each rear wheel"

3.7 info, it's still there :D:D