Hi Brent,
the operation of the over drive reduces the engine revs at a maintained
speed, when you engage it the engine revs drop as the overall gearing
has been increased.
For example, if you are running at say 60 MPH and engage o/d, you should
see the engine revs drop but the speed remain pretty much the same.
engaging o/d is normally pretty smooth but if the od unit has new
clutches fitted after a rebuild then they can be a little sharp.
Dis-engaging can be harsh if you don't feather the throttle a little to
get the engine ready to increase speed quickly, otherwise it acts like a
down change without the clutch.
On a newly fitted od, the oil can sometimes takes a few miles to get
around the system and clear airlocks. what oil are you running? It
should be engine oil rather than hypoid.
the first thing I would check if it does not work is the electrics,
when you engage over drive, do you get a 12 volt feed on the yellow
purple wire at the solenoid ?
regards
Jeff
In message <3AF5C97A.4FABB5C6@navix.net>, Brent Kasl <kasl100@navix.net>
writes
>For those who have OD in their Alpines, when engaged, what it is sign
>everything is working? Does the rpm's drop or does the speedo drop? I
>still have concerns about my operation. Also, is their a breaking in
>period when all of the oil is run through the mechanics of the OD system
>before it engages? I have run it twice now and checked the gear oil
>after each run without having to add any. I thought maybe it takes time
>for the pressure to build up after install. Any comments greatly
>appreciated. Thanks Brent (Second gearbox,OD removal-gearbox.OD install)
--
Jeff Howarth
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