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Re: [Healeys] overdrive problem

To: "'Bob Haskell'" <rchaskell@earthlink.net>
Subject: Re: [Healeys] overdrive problem
From: Henry G Leach via Healeys <healeys@autox.team.net>
Date: Mon, 14 Jun 2021 00:15:22 +0000 PE9JRXLNJkCqjfCD0apnePTAKFb0zHhfd6IMkhLz6N8MHG18+Hdd+si4z4w/S7u+zdVNeRE/72kQ3YA+/0DiMdNPtV5Lleqve3yr0IMXrCSQ3nwycn3r4NO+ n5yY7hX05L7f/on500En/w==
Cc: "'healeys@autox.team.net'" <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
Importance: Normal
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Hi Bob-I agree, Redline MT 90 can work as well, providing the gearbox=0A=
is well sealed. I'm talking about 90W gear oil (hypoy) which is what=0Ai=
t appears has been added to the OD to "get more Pressure"...Jim=0Amentio=
ns MT90, but I want to make the point not to add gear oil as=0Afound in=
 American transmissions.=0AI had a bad experience with Redline in the 10=
0 gearbox, which is not a=0Avery tight unit...it all leaked out overnigh=
t, from a trans that was=0Ain a customer's car. We refilled it with 30W-=
ND and it stayed in the=0Abox. Redline is a synthetic and has a very sma=
ll molecule. Hank=0A=0A=09-----------------------------------------From:=
 "Bob Haskell" =0ATo: "healeymanjim"=0ACc: "healeys@autox.team.net"=0ASe=
nt: Sunday June 13 2021 5:00:43PM=0ASubject: Re: [Healeys] overdrive pro=
blem=0A=0A Hank,=0A=0A Redline MT90 is not 90 weight oil. It's 75W90 GL-=
4 gear oil (similar=0Ato=0A 5W40/10W40 engine oil). Redline's MTL (75W80=
 GL-4) might be a better=0A match to the original specification (SAE 30/=
10W30). Both are safe for=0A brass synchros.=0A=0A Cheers,=0A=0A Bob Has=
kell=0A Austin Healey 3000 BN7/BT7 registrar=0A=0A On 6/13/21 7:49 PM, H=
enry G Leach via Healeys wrote:=0A > Hi healeymanjim -there a few statem=
ents you made that trouble me=0Aabout=0A > your overdrive.=0A >=0A > 1-w=
hy was there 90W oil in the trans? Was there an attempt to get=0Amore=0A=
 > pressure with heavier oil?=0A >=0A > 2- if you can manually engage ov=
erdrive with the lever on the=0A > right-the overdrive is working and pr=
essure has been built up=0Aenough=0A > to switch from direct to OD (over=
come spring pressure). However you=0A > should probably measure the pres=
sure with a gauge and insure that=0Ait=0A > is over 400lbs.(photo)=0A >=
=0A > 3-the mainshaft should have nothing to do with engagement=0A >=0A=
 > 4-if the solenoid is good, and if properly adjusted, it should=0Ashif=
t=0A > into OD if the switch on the dash is in OD. My guess is that the=
=0A > adjustment is not by the book. Measure the solenoid and if it draw=
s=0A > about 8 Amps, it is defective.=0A >=0A > 5-you can follow the pro=
cedure in the workshop manual to remover=0Athe=0A > accumulator, remembe=
ring that a huge spring is pushing on the=0Asolenoid=0A > case and must=
 be eased out. You should have the correct replacement=0A > parts-piston=
 rings or o-rings and any gaskets-and a proper puller=0A > before you pu=
ll it apart, as just examining it and replacing it=0Awon't=0A > give you=
 an answer, unless you see major scoring or broken piston=0Arings.=0A >=
=0A > 6- I would never use 90W oil in that gearbox. It will foam and=0Ac=
ause=0A > problems in the overdrive and when cold adds additional proble=
ms=0Awith=0A > gear engagement. Use the 30 ND (won't foam)=0A >=0A > Tak=
e particular care in disassembly, as this is an involved=0Amechanism,=0A=
 > and must be handled correctly to achieve successful operation. =0A >=
 Regards, Hank=0A >=0A > -----------------------------------------=0A >=
=0A > From: "healeymanjim via Healeys"=0A > To: "healeys@autox.team.net"=
=0A > Cc:=0A > Sent: Sunday June 13 2021 3:33:31PM=0A > Subject: [Healey=
s] overdrive problem=0A >=0A > is there such a thing as a stuck accumula=
tor in the overdrive? a=0Afew=0A > weeks ago we changed the gasket on th=
e side of the=0A > case that houses the solenoid and arm. have been unab=
le to get o/d=0Ato=0A > engage electrically ever since. the solenoid is=
 new=0A > and works perfectly as long as the overdrive mainshaft is not=
=0Aturning.=0A > it tries to move the arm but is unable. pushing on=0A >=
 the right side shaft lever for a second or two will engage the o/d=0Aan=
d=0A > it will stay in o/d until the o/d switch is returned to=0A > norm=
al. it is like the accumulator has no pressure and does not=0Agive=0A >=
 the boost to engage the o/d. can the accumulator be=0A > removed withou=
t damaging it? it had MT 90 oil in it which we=0Areplaced=0A > with 30ND=
 hoping to stop any more leaks but can=0A > put it back in if it would h=
elp. any assistance welcomed.=0A > _____________________________________=
__________=0A > Support Team.Net http://www.team.net/donate.html=0A /> >=
 /> Suggested annual donation $12.75=0A >=0A > Archive:  [1]=0A > http:/=
/www.team.net/pipermail/healeys [2]=0A >  [3] http://autox.team.net/arch=
ive=0A /> > />=0A > Healeys@autox.team.net=0A >  [4]=0A > http://autox.t=
eam.net/mailman/listinfo/healeys=0A /> > />=0A > Unsubscribe/Manage:=0A=
 >  [5]=0A > http://autox.team.net/mailman/options/healeys/gradea1@chart=
er.net=0A /> > />=0A > =0A /> >=0A > ___________________________________=
____________=0A > Support Team.Net http://www.team.net/donate.html=0A />=
 > Suggested annual donation $12.75=0A >=0A > Archive: http://www.team.n=
et/pipermail/healeys [6]=0Ahttp://autox.team.net/archive=0A /> >=0A > He=
aleys@autox.team.net=0A > http://autox.team.net/mailman/listinfo/healeys=
=0A /> >=0A > Unsubscribe/Manage:=0Ahttp://autox.team.net/mailman/option=
s/healeys/rchaskell@earthlink.net=0A /> >=0A=0A =0A=0ALinks:=0A------=0A=
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p://autox.team.net/archive%3Cbr%3E=0A[5] http://autox.team.net/mailman/l=
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<html><body>Hi Bob-I agree, Redline MT 90 can work as well, providing th=
e gearbox is well sealed. I'm talking about 90W gear oil (hypoy) which i=
s what it appears has been added to the OD to "get more Pressure"...Jim=
 mentions MT90, but I want to make the point not to add gear oil as foun=
d in American transmissions.<div><br></div><div>I had a bad experience w=
ith Redline in the 100 gearbox, which is not a very tight unit...it all=
 leaked out overnight, from a trans that was in a customer's car.&nbsp;=
 We refilled it with 30W-ND and it stayed in the box. Redline is a synth=
etic and has a very small molecule.&nbsp; Hank<br><br><div class=3D"repl=
y-new-signature"></div><p>-----------------------------------------</p>F=
rom: "Bob Haskell" <rchaskell@earthlink.net><br>To:  "healeymanjim"<br>C=
c: "healeys@autox.team.net"<br>Sent: Sunday June 13 2021 5:00:43PM<br>Su=
bject: Re: [Healeys] overdrive problem<br><br>=0AHank,<br><br>=0ARedline=
 MT90 is not 90 weight oil.&nbsp; It's 75W90 GL-4 gear oil=0A(similar to=
<br>=0A5W40/10W40 engine oil).&nbsp; Redline's MTL (75W80 GL-4) might be=
 a=0Abetter<br>=0Amatch to the original specification (SAE 30/10W30).&nb=
sp; Both are=0Asafe for<br>=0Abrass synchros.<br><br>=0ACheers,<br><br>=
=0ABob Haskell<br>=0AAustin Healey 3000 BN7/BT7 registrar<br><br>=0AOn 6=
/13/21 7:49 PM, Henry G Leach via Healeys wrote:<br>=0A&gt; Hi healeyman=
jim -there a few statements you made that trouble=0Ame about<br>=0A&gt;=
 your overdrive.<br>=0A&gt;<br>=0A&gt; 1-why was there 90W oil in the tr=
ans? Was there an attempt to=0Aget more<br>=0A&gt; pressure with heavier=
 oil?<br>=0A&gt;<br>=0A&gt; 2- if you can manually engage overdrive with=
 the lever on=0Athe<br>=0A&gt; right-the overdrive is working and pressu=
re has been built up=0Aenough<br>=0A&gt; to switch from direct to OD (ov=
ercome spring pressure).=0AHowever you<br>=0A&gt; should probably measur=
e the pressure with a gauge and insure=0Athat it<br>=0A&gt; is over 400l=
bs.(photo)<br>=0A&gt;<br>=0A&gt; 3-the mainshaft should have nothing to=
 do with engagement<br>=0A&gt;<br>=0A&gt; 4-if the solenoid is good, and=
 if properly adjusted, it should=0Ashift<br>=0A&gt; into OD if the switc=
h on the dash is in OD. My guess is that=0Athe<br>=0A&gt; adjustment is=
 not by the book. Measure the solenoid and if it=0Adraws<br>=0A&gt; abou=
t 8 Amps, it is defective.<br>=0A&gt;<br>=0A&gt; 5-you can follow the pr=
ocedure in the workshop manual to=0Aremover the<br>=0A&gt; accumulator,=
 remembering that a huge spring is pushing on the=0Asolenoid<br>=0A&gt;=
 case and must be eased out. You should have the correct=0Areplacement<b=
r>=0A&gt; parts-piston rings or o-rings and any gaskets-and a proper=0Ap=
uller<br>=0A&gt; before you pull it apart, as just examining it and repl=
acing=0Ait won't<br>=0A&gt; give you an answer, unless you see major sco=
ring or broken=0Apiston rings.<br>=0A&gt;<br>=0A&gt; 6- I would never us=
e 90W oil in that gearbox. It will foam and=0Acause<br>=0A&gt; problems=
 in the overdrive and when cold adds additional=0Aproblems with<br>=0A&g=
t; gear engagement. Use the 30 ND (won't foam)<br>=0A&gt;<br>=0A&gt; Tak=
e particular care in disassembly, as this is an involved=0Amechanism,<br=
>=0A&gt; and must be handled correctly to achieve successful=0Aoperation=
.&nbsp;<br>=0A&gt; Regards, Hank<br>=0A&gt;<br>=0A&gt; -----------------=
------------------------<br>=0A&gt;<br>=0A&gt; From: "healeymanjim via H=
ealeys"<br>=0A&gt; To: "healeys@autox.team.net"<br>=0A&gt; Cc:<br>=0A&gt=
; Sent: Sunday June 13 2021 3:33:31PM<br>=0A&gt; Subject: [Healeys] over=
drive problem<br>=0A&gt;<br>=0A&gt; is there such a thing as a stuck acc=
umulator in the overdrive?=0Aa few<br>=0A&gt; weeks ago we changed the g=
asket on the side of the<br>=0A&gt; case that houses the solenoid and ar=
m. have been unable to get=0Ao/d to<br>=0A&gt; engage electrically ever=
 since. the solenoid is new<br>=0A&gt; and works perfectly as long as th=
e overdrive mainshaft is not=0Aturning.<br>=0A&gt; it tries to move the=
 arm but is unable. pushing on<br>=0A&gt; the right side shaft lever for=
 a second or two will engage the=0Ao/d and<br>=0A&gt; it will stay in o/=
d until the o/d switch is returned to<br>=0A&gt; normal. it is like the=
 accumulator has no pressure and does=0Anot give<br>=0A&gt; the boost to=
 engage the o/d. can the accumulator be<br>=0A&gt; removed without damag=
ing it? it had MT 90 oil in it which we=0Areplaced<br>=0A&gt; with 30ND=
 hoping to stop any more leaks but can<br>=0A&gt; put it back in if it w=
ould help. any assistance welcomed.<br>=0A&gt; _________________________=
______________________<br>=0A&gt; Support Team.Net <a href=3D"http://www=
.team.net/donate.html%3Cbr">http://www.team.net/donate.html<br>=0A/&gt;=
 &gt; /&gt; Suggested annual donation $12.75<br>=0A&gt;<br>=0A&gt; Archi=
ve: &lt;</a><a href=3D"http://www.team.net/donate.html%3Cbr%3E";>http://w=
ww.team.net/donate.html%3Cbr&gt;</a><br>=0A&gt; <a href=3D"http://www.te=
am.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a><br>=
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www.team.net/pipermail/healeys&gt;</a> <a href=3D"http://autox.team.net/=
archive%3Cbr">http://autox.team.net/archive<br>=0A/&gt; &gt; /&gt;<br>=
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x.team.net/archive%3Cbr%3E">http://autox.team.net/archive%3Cbr&gt;</a><b=
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