[Healeys] overdrive problem

[gradea1 at charter.net]

The other possible simple adjustment is the throttle switch set to
1/5th throttle-use the 12V test lamp and it sets perfect. (procedure
in workshop book) If you fooled with carbs or linkage, this setting
can be disrupted.
Another possible issue is dirt in the valve body...remove the tunnel,
unscrew valve nut and "carefully" remove shaft, spring and ball and
clean orffice. Be sure that the tiny hole in the bottom of the valve
shaft is open. Don't use a rag, q-tip or shop towel-no lint! Use a
small wire or welding tip cleaner. Hank

	-----------------------------------------From: "Bruce Steele" 
To: "Bob Spidell"
Cc: 
Sent: Monday March 22 2021 9:41:20PM
Subject: Re: [Healeys] overdrive problem

 I agree with Bob, but I'll share an experience I had in the off
chance it
 helps. I had a problem with my OD dropping out and/or cycling in and
out.
 After much trial and error and tracing with the volt meter, I figured
out
 that the problem was that the fiber washer that came with the
replacement
 gear level position switch was slightly too thick, resulting in
intermittent
 closure of the switch. Removed the washer and used Teflon tape
instead,
 problem solved.

 Bruce Steele
 Brea, CA
 1960 BN7

 -----Original Message-----
 From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of
Bob
 Spidell
 Sent: Monday, March 22, 2021 7:50 PM
 To: healeys at autox.team.net
 Subject: Re: [Healeys] overdrive problem

 The shop manual has a comprehensive diagnostic flow chart; and maybe
a
 troubleshooting guide as well.

 To make SWAGs, we need a little more info:

 - does it stay in OD indefinitely, until he accelerates, or pop out
 immediately?
 - does it initially engage in 2-3 seconds, or take longer?

 If the pump is weak, OD would be slow to engage and, once the
accumulator
 has engaged there might not be enough to hold OD. But, my guess would
be
 something electrical; possibly the relay.

 Bob

 On 3/22/2021 5:06 PM, healeymanjim via Healeys wrote:
 > friends BT7 had o/d quit. solenoid was bad so replaced it. now it
will
 go into o/d but pop out when accelerating. any
 > ideas what the cause is and the fix?
 > _______________________________________________
 >

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