Nissan Micra (1992 - 2003) - 1993 1.0 rear brake pressure.

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Wed 4 Jun 2008 20:37
1993 1.0 rear brake pressure. - telecaster
While testing rear brakes for mot I had an assistant brake firmly with rear wheels in the air.
The wheels stopped but if I exerted a bit of pressure they moved?Applying the handbrake rendered the wheels solid.
I was worried about this failing mot yet it passed....what gives? Is this something to do with the brake pressure compensator ie: 70% braking force to the front and 30% to the rear(or thereabouts).
In layman terms what im asking is should the rear drums lock the wheels solid when carrying out the aforementioned test?

Edited by Pugugly on 04/06/2008 at 20:41

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Wed 4 Jun 2008 20:47
1993 1.0 rear brake pressure. - Screwloose
in the air...


If it's got load compensation, then the rear brakes make have little effect at full travel.
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Wed 4 Jun 2008 20:49
1993 1.0 rear brake pressure. - telecaster
Cheers S...yes it has a load compensator!
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Wed 4 Jun 2008 20:54
1993 1.0 rear brake pressure. - Screwloose

If they came good on the rollers; then that's all I can think of.
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Wed 4 Jun 2008 20:59
1993 1.0 rear brake pressure. - Number_Cruncher
Even with the suspension in the right position, you'll find that the rear brakes don't do a great deal!

A short car, with a non sporty centre of gravity height and a front heavy weight bias, and a legal need to avoid rear locking all conspire to make the front brakes do by far the majority of the braking on cars like this.

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Wed 4 Jun 2008 23:53
1993 1.0 rear brake pressure. - bathtub tom
It passed the MOT?

My old KIA, barely scrapes through each MOT on foot applied rear brakes, but passes the handbrake efficiency with no problem. This is after I pull off the drums, roughen up the shoes and check the cylinders. It has a fixed pressure reducing valve!
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Thu 5 Jun 2008 01:03
1993 1.0 rear brake pressure. - telecaster
Yeah Tom......it passed, kinda confused me a bit.
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