Hi Mike, thought this may be worth mentioning to the dedicated
electromagician in the group.
A little finding about the full load test on your myriad alternaters.
Decided to fit an oil pressure gauge. Where to fit so as to be visible,
well the old speaker housing is now replaced with a binnacle which
contains two gauges, dash matching cover material and wood fascia with
the gauges part dropped into the dash. Used a nibbler to trim the dash
metal at the gauge front area to do the lowering but it looks as though
fitted at Coventry. As two gauges what to marry the oil pressure with.
Decided on the ammeter, done it before on other cars and besides nice to
see the needle flick left and right - only it didn't. I have it working
now but the road to success brought the full load test into perspective.
I have a Bosch 56amp alternater mounted and carry the Lucas 28 amp in
the boot as spare. On both of them I found that the voltage sensing
terminal is in fact common with the load terminal (on the Lucas,
visually obvious) so if you still have this wire connected and are not
achieving full output on test that would be because some of the little
electrons are being sneaky and nipping down this wire. Removal has not
caused any hardship. If you are using other machines check with your
meter on resistance, you should get zero ohms. Next swop the leads over
on the terminals and you should still get zero again. If not the
terminals will not be common and the machine will need the sensing wire.
Hope that helps, with 5 cars that could be 5 worries less.
Screenwashers: Nowt to do wi alternators. After cleaning everything
still maintaining a low profile. This has worked for me and another
owner, who I must say didn't fix the one on the car but the one he had
thrown in the bin for the one on the car. Check the pump gasket, the
edge of which is visible without dismantling. Years of water plus had
caused the gasket to swell into the ports of the pump blocking same
quite dramatically. Careful application of a craft knife to remove gungy
bits and the car behind was washed.
rgds
Graham
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