Use a continuity tester or make up a test bulb and battery (charger) hook
it up and “go shifting” If you make a motor noise with your tongue and
lips you be joining ML!
One should have continuity in fourth the other in reverse! It will also
show if the switches are good! (bulb and battery is best to see if load
can be switched on and off)
Regards,
Rick
In reply to a message from holland-rick@juno.com sent Thu 5 Jan 2006:
After I hit the send button I thought to myself
‘‘Rich, why didn’t you just go out and put a tester on them… boy,
are you gonna catch crap for this’’ 
I’ll test them and report back.
RN
PS Is this why he has wipers on the INSIDE of the car??–
The original message included these comments:
Use a continuity tester or make up a test bulb and battery (charger) hook
it up and ‘‘go shifting’’ If you make a motor noise with your tongue and
lips you be joining ML!
Regards,
Rick
–
rich neary
perrineville/new jersey, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php –
In reply to a message from rich neary sent Fri 6 Jan 2006:
Guys, As I stated ‘‘I’ll check and report back’’.
Forwardmost switch on top of trans is reverse light switch, rear
switch on top of trans is 4th gear switch for OD. Both are normally
open and each is closed when trans is put in appropriate gear.
Thanks
Rich–
The original message included these comments:
In reply to a message from holland-rick@juno.com sent Thu 5 Jan 2006:
After I hit the send button I thought to myself
‘‘Rich, why didn’t you just go out and put a tester on them… boy,
are you gonna catch crap for this’’
I’ll test them and report back.
RN
PS Is this why he has wipers on the INSIDE of the car??
The original message included these comments:Use a continuity tester or make up a test bulb and battery (charger) hook
it up and ‘‘go shifting’’ If you make a motor noise with your tongue and
lips you be joining ML!
–
rich neary
perrineville/new jersey, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php –
All this discussion about overdrive do’s & don’t’s have me confused a bit.
I’ve had 2 cars with overdrive & neither followed statements made here. My 1st
O/D car, a -53 Nash Ambassador 2dr., had a 3sp. with O/D, manually engaged
with a pull/push cable, similar to the bonnet cable in my 150, in the same
position also. It was always engaged i.e. in the free-wheeling position. It was
also engaged when I backed out of the driveway every day, so I don’t
understand the statement, “don’t put the car in reverse with the O/D engaged”.
When driving, if I removed my foot from the gas pedal, the engine would go
to idle speed but the car would continue to coast along until wind resistance
& other non engine factors would slow it down. If, while coasting, I pulled
out the cable, disengaging the O/D, the car would immediately slow down or
gear down with the engines. rpm. You couldn’t engage the O/D unless you were at
a complete stop, without leaving the trans. in pieces on the ground.
The 150 has electrically operated O/D, & again, it was always in the “On”
position while driving or backing up, for 10yrs. When I accelerated, then took
my foot off the gas, the O/D engaged, no matter what gear it was in, the
free-wheeling was there & I continued to shift through the gears to 4th. Once the
O/D was engaged in 1st gear, it would stay engaged until you shut the
ignition off or switched it off.
Again, WHILE THE CAR IS MOVING, AT ANY SPEED, DO NOT ENGAGE THE O/D, but you
can disengage at any speed & have your seat belt on because there will be
rapid deceleration in the lower gears.
Sooo…, somebody want to explain why you can’t put the gear in reverse with
the O/D engaged without blowing your overdrive gears? The only way that will
happen is, engaging the O/D while moving forward or backward.
Regards, Otto M.
Hi Otto,
On page 20 of the XK150 supplement service manual,
“IMPORTANT - If the overdrive does not release, do NOT reverse the car,
otherwise extensive damage may be caused.”
Page 19 shows a picture of the 4th gear engagement switch.
The contemporary MK1 had a complete service and operating manual, and on
page F.25 says: “The overdrive operates in top gear only” and " the
overdrive should be brought into operation when the required cruising speed
has been obtained."
I imagine the Nash did not use a Laycock de Normanville overdrive unit.
Mike Eck
New Jersey, USA
'51 XK120 OTS, '62 3.8 MK2 MOD, '72 SIII E-Type 2+2
All this discussion about overdrive do’s & don’t’s have me confused a
bit.
I’ve had 2 cars with overdrive & neither followed statements made here.
My 1st
O/D car, a -53 Nash Ambassador 2dr., had a 3sp. with O/D,
Again, WHILE THE CAR IS MOVING, AT ANY SPEED, DO NOT ENGAGE THE O/D, but
you
can disengage at any speed & have your seat belt on because there will
be
rapid deceleration in the lower gears.
Sooo…, somebody want to explain why you can’t put the gear in reverse
with
the O/D engaged without blowing your overdrive gears? The only way that
will> happen is, engaging the O/D while moving forward or backward.Regards, Otto M.
Mike,
Are you referring to a manual O/D or electrically operated O/D? Mine is
operated by a relay & when the switch is in the “ON” position it’s always in
overdrive no matter what gear. By that I mean, whatever gear it’s in, when you
lift the foot off the pedal, the car will coast, (no load), until it comes to a
stop. Try switching to “OFF”, then go in first gear till you reach 5,000rpm,
remove your foot & you will lurch forward in your seat as the car rapidly
decelerates. Do this while in O/D, the car will coast & come to a slow stop.
I looked at the breakdown of all the pieces in the parts catalog for the MK
VII & XK-140 fitted with the Laycock O/D & my 150 has none of that. Looks
like that relay has only 2 terminals, mine has 5 term. & nothing to do with
the engine, carbs., linkage etc.
So maybe we’re talking apples & oranges?
Regards, Otto M.
Otto,
Sorry, but you’re just not right on this one. There is a switch on the 150
carb linkage, and electrically operated O/D is engaged only in fourth gear
if properly wired through the top gear switch located on the trans top plate
to the solenoid.
When in other gears, there is no power to the solenoid, which can only be
engaged by the dash on/off switch if in top gear. As I recall, the carb
switch locks out the dash switch so that at closed throttle the O/D cannot
be disengaged, causing wear on the clutches by sudden disengagement into 4th
gear.
Jerry Oliver
Olympia, WA----- Original Message -----
From: Ottman0401@aol.com
To: xk@jag-lovers.org
Sent: Monday, January 09, 2006 7:08 PM
Subject: Re: [xk] To O.D. or not to O.D.
Mike,
Are you referring to a manual O/D or electrically operated O/D? Mine is
operated by a relay & when the switch is in the “ON” position it’s always
in
overdrive no matter what gear. By that I mean, whatever gear it’s in,
when you
lift the foot off the pedal, the car will coast, (no load), until it
comes to a
stop. Try switching to “OFF”, then go in first gear till you reach
5,000rpm,
remove your foot & you will lurch forward in your seat as the car rapidly
decelerates. Do this while in O/D, the car will coast & come to a slow
stop.
I looked at the breakdown of all the pieces in the parts catalog for the
MK
VII & XK-140 fitted with the Laycock O/D & my 150 has none of that.
Looks
like that relay has only 2 terminals, mine has 5 term. & nothing to do
with
the engine, carbs., linkage etc.
So maybe we’re talking apples & oranges?Regards, Otto M.