Tach problem

[Gary Miller]

Steve,

You have a tach sending unit on the front of your 3208, behind the
fan. It's 'L' shaped and the longer portion of it is about the size
of a roll of quarters going curbside to roadside. There are wires
coming off near the end of it. It's hard to get to and remove but you
may try getting some lubrication into it. I'd suggest a graphite
based speedometer cable lubricant.

On the drivers side of the sending unit will be a rubber cap (or the
remnants thereof) which covers where a cable would hook up to it.
Remove it and try soaking some lubrication into it.

Sounds like the internal magnets and drive tines are locking up, and
it needs cleaning/lubricating.

Good Luck,

Gary Miller
83 FC 33 - For Sale - 'millercoachworks.com'
Milwaukee area

--- In WanderlodgeForum@yahoogroups.com, "Steve Johnson"
wrote:
> I noticed a few times when starting the engine, the tach would spike
> over to the far right, over 4000 rpm, and stay there. After a few
> minutes it would come back down to a reasonable reading. The last
two
> trips of about three hours each, it never came down. Just stayed
> maxed out to the right until I turned the engine off. Then it came
> back down to zero.
>
> Any idea where I should start?
>
> Thank you.
>
> Steve Johnson
> Grand Rapids, MI
> '82 FC35