6V92 won't start

[putneyflash@...>]

If the voltage meter drops to below 9 or 10 volts charge the battries, always do
the simple, cheap things first.
re brake>
> From: "mrkane1952" <mrkane@...>
> Date: 2007/08/29 Wed PM 01:57:46 EDT
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] 6V92 won't start
>
> Greetings All:
>
> I was again exercising the systems after being stationary in this park
> for two months, in preparation for getting back on the road next week.
> I could not start the coach engine, an '85 6V92. This is the first
> failure to start I have experienced in the eighteen months I've owned
> the coach. Usually it goes almost as soon as the key engages the
> starter.
>
> Symptoms: the starter motor does not turn. All the dash responses are
> normal when switching on the ignition--relays audibly toggle, low air
> buzzer and light are active and the suspension dump light is on. The
> safeline lights flash in the overhead. Turning the key to "start"
> causes a couple meters to peg low, but the 12 volt ammeter shows no
> change, nor does the volt meter.
>
> I have checked:
> 1) Battery condition--On this coach, all six 6 volt batteries are tied
> together; there is no dedicated house or starting set. All have
> sufficient water, and each reads about 6.3 volts with the charger off.
> Voltage from the positive tie point to the chassis reads about 12.5
> volts--roughly the same as the dash meter. Resistance from the
> battery posts to the tie point, and from the negative posts to the
> chassis is about 2 ohms (without cleaning the grease off.) No
> corrosion is visible at any connector.
>
> 2) Engaging the "aux. battery" switch made no difference.
>
> 3) The no-start response is similar to the times I didn't get the
> transmission selector fully into the "N" neutral position before
> trying to crank the motor over, so I cycled the selector several times
> to be sure.
>
> 4) Toggled the A/T switch.
>
> 5) I have no key for the rear start switch, but I cycled the
> front-off-rear switch several times. For the present I decided not to
> remove and open the box until further consultation.
>
> 6) Fuel (5/8 tank, Racor no water) and coolant seem correct.
>
> Riding a Harley since the seventies prepared me for a certain amount
> of backroad repair using what little I had in my saddlebags, but now I
> have discovered how difficult it is to troubleshoot a 40 foot long
> coach without a helper or sufficient tools. Even tried reading my
> Fluke in the backup camera, but no luck. It embarrasses me to say I
> don't fit under the bus to get to the starter, either!
>
> The lack or prior symptoms makes me suspect a safety interlock
> somewhere may be the cause, rather than the starter itself. So the
> question for the group is what else to try before I call for a mobile
> repair tech (at $110 /hour)?
>
> Thanks--
>
> M.R.Kane
> 1985 PT 40
> near Sanger, TX
>
>
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