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Re: [Healeys] Overdrive pump queries

To: "'simon.lachlan@alexarevel.plus.com'" <simon.lachlan@alexarevel.plus.com>
Subject: Re: [Healeys] Overdrive pump queries
From: Henry G Leach via Healeys <healeys@autox.team.net>
Date: Mon, 30 Aug 2021 22:48:05 +0000 boBusmoQMsMpJgyXWQ+Zw3zHnE7RiPMHQI9g89jvT7n72Y1UmaO44r9XY3Ao0SHr0Rh132/44DfMjFoKp9AK3jIeoAQOnWEZglZdSmptf0oXnxuoZS/qOl9q 77qyfVEv8caOTh4wne8g49lsu7yaftkFJ+c6aXeXnrA=
Cc: 'Healeys' <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
Importance: Normal
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Simon-great that David helped you with the proper tool. I'm sure he=0Aag=
rees that the fitting of the pump body and ball is critical to get=0Agoo=
d pressure. (that suggestion from someone to stretch the spring for=0Amo=
re contact is a workaround) I think if you use good replacement=0Aparts=
 that won't be necessary. With the original unaltered parts you=0Ashould=
 achieve between 450-500 lbs. which is enough to overcome the=0Asprings=
 of the direct drive position.=0A1- Its easier on the bench, but you sho=
uld be able to get to the pump=0Ain position with the unit in the car.=
=0A2- You insert a screwdriver in the channel where the ball goes and=0A=
"guide" the plunger so that it goes as stated with the flat to the=0Area=
r and it will fit the guide peg, and the hole will end up exactly=0Afaci=
ng the channel for the ball, etc. (this may be hard to see in the=0Acar=
 as it quite low and you will have to stick your head to the=0Afloor!) B=
e careful not to damage the seat!!! I would use a wood dowel=0Arather th=
an a screwdriver, but if you are careful not to exert=0Apressure and dis=
tort the seat then OK. You might need two people to do=0Athis-one below=
 to tap the pump home, and one above guiding it.=0AThe trick is to not d=
amage anything by stressing parts. Most important=0Ais, as you say, the=
 plunger must be free to move up and down with the=0Acam action.=0AIt do=
es appear that the issues you were having were that the plunger=0Awas no=
t free to ride up and down with the cam to produce pressure.=0AWhoever g=
lued it in position was not understanding how the overdrive=0Aworks. Goo=
d luck, Hank=0A=0A=09-----------------------------------------From:=0Asi=
mon.lachlan@alexarevel.plus.com=0ATo: "David Nock"=0ACc: "Healeys"=0ASen=
t: Monday August 30 2021 5:30:17AM=0ASubject: RE: [Healeys] Overdrive pu=
mp queries=0A=0A=09Hi, =0A=0A=09David has already steered me in the righ=
t direction with regard to=0Athe reamer. =0A=0A=09And a further query=E2=
=80=A6.. =0A=0A=09It seems very likely from what I confront in my car an=
d from the=0Aadvice received to date =E2=80=93 for which many thanks -..=
it seems very=0Alikely that the issue is caused by the pump plunger bein=
g stuck or, I=0Asuspect, not quite orientated. =0A=0A=09Despite what you=
 guys suspect by now(!), I study form religiously=0Abefore I delve into=
 these things and have been brought up short by a=0Asection in the BMC m=
anual, Section G8, =E2=80=9CPump Valve=E2=80=9D. One is told=0Ahow to pu=
t the =E2=80=9Cpump body=E2=80=9D back in using one of many mythical=0As=
pecial tools and then the manual addresses the insertion of the=0A=E2=80=
=9Cplunger=E2=80=9D (piston):- =E2=80=9CThe pump plunger is prevented fr=
om=0Arotation when in position by a guide peg carried in the front casin=
g.=0AWhen assembling the pump, the plunger should be inserted with the f=
lat=0Aon its head facing the rear of the unit. It is possible to guide i=
t=0Apast the guide peg by means of a screwdriver inserted through the si=
de=0Aof the casting=E2=80=9D. =0A=0A=09* Can that procedure be carried o=
ut when the OD is still in the car=0Aas is implied by the manual?=0A =09=
* If so, where is the access point through which one can insert a=0Ascre=
wdriver? (Strikes me that oil would gush out=E2=80=A6..If the pump ever=
=0Arestarted pumping!)=0A =09* If not so, is there a trick involved in g=
etting the plunger up and=0Acorrectly sited?=0A=0A=09Simon =0A=0A=09FROM=
: Healeys  ON BEHALF OF Henry G Leach via Healeys=0ASENT: 30 August 2021=
 01:57=0ATO: 'David Nock' =0ACC: 'Healeys' =0ASUBJECT: Re: [Healeys] Ove=
rdrive pump queries   =0A=0A=09David-help this guy out here...he is gett=
ing desperate! He has been=0Aat this project for months and can't get en=
ough pressure. What size=0Areamer and where can he get one? He lives in=
 UK. Thanks, Hank =0A=0A=09----------------------------------------- =0A=
=0A=09From: "David Nock"=0A To: gradea1@charter.net=0A Cc: "Michael Salt=
er", "Healeys"=0A Sent: Sunday August 29 2021 12:28:02PM=0A Subject: Re:=
 [Healeys] Overdrive pump queries=0A=0A Smacking the check ball will not=
 make a new seat in the pump. You=0Amust cut a new seat with a special r=
eamer.    =0A=0A=09David Nock   =0A=0A=09

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<html><body>Simon-great that David helped you with the proper tool. I'm=
 sure he agrees that the fitting of the pump body and ball is critical t=
o get good pressure. (that suggestion from someone to stretch the spring=
 for more contact is a workaround) I think if you use good replacement p=
arts that won't be necessary. With the original unaltered parts you shou=
ld achieve between 450-500 lbs. which is enough to overcome the springs=
 of the direct drive position.<div><br></div><div>1- Its easier on the b=
ench, but you should be able to get to the pump in position with the uni=
t in the car.</div><div><br></div><div>2- You insert a screwdriver in th=
e channel where the ball goes and "guide" the plunger so that it goes as=
 stated with the flat to the rear and it will fit the guide peg, and the=
 hole will end up exactly facing the channel for the ball, etc. (this ma=
y be hard to see in the car as it quite low and you will have to stick y=
our head to the floor!) Be careful not to damage the seat!!!&nbsp; I wou=
ld use a wood dowel rather than a screwdriver, but if you are careful no=
t to exert pressure and distort the seat then OK. You might need two peo=
ple to do this-one below to tap the pump home, and one above guiding it.=
</div><div><br></div><div>The trick is to not damage anything by stressi=
ng parts. Most important is, as you say, the plunger must be free to mov=
e up and down with the cam action.</div><div><br></div><div>It does appe=
ar that the issues you were having were that the plunger was&nbsp; not f=
ree to ride up and down with the cam to produce pressure.&nbsp; Whoever=
 glued it in position was not understanding how the overdrive works. Goo=
d luck, Hank<br><br><div class=3D"reply-new-signature"></div><p>--------=
---------------------------------</p>From: simon.lachlan@alexarevel.plus=
.com<br>To:  "David Nock"<br>Cc: "Healeys"<br>Sent: Monday August 30 202=
1 5:30:17AM<br>Subject: RE: [Healeys] Overdrive pump queries<br><br>=0A<=
div class=3D"WordSection1">=0A<p class=3D"MsoNormal"><span>Hi,</span></p=
>=0A<p class=3D"MsoNormal"><span>David=0Ahas already steered me in the r=
ight direction with regard to the=0Areamer.</span></p>=0A<p class=3D"Mso=
Normal"><span>&nbsp;</span></p>=0A<p class=3D"MsoNormal"><span>And a=0Af=
urther query=E2=80=A6..</span></p>=0A<p class=3D"MsoNormal"><span>It=0As=
eems very likely from what I confront in my car and from the=0Aadvice re=
ceived to date =E2=80=93 for which many thanks -..it seems very=0Alikely=
 that the issue is caused by the pump plunger being stuck or,=0AI suspec=
t, not quite orientated.</span></p>=0A<p class=3D"MsoNormal"><span>Despi=
te what you guys suspect by=0Anow(!), I study form religiously before I=
 delve into these things=0Aand have been brought up short by a section i=
n the BMC manual,=0ASection G8, =E2=80=9CPump Valve=E2=80=9D. One is tol=
d how to put the =E2=80=9Cpump body=E2=80=9D=0Aback in using one of many=
 mythical special tools and then the=0Amanual addresses the insertion of=
 the =E2=80=9Cplunger=E2=80=9D (piston):- =E2=80=9CThe=0Apump plunger is=
 prevented from rotation when in position by a guide=0Apeg carried in th=
e front casing. When assembling the pump, the=0Aplunger should be insert=
ed with the flat on its head facing the=0Arear of the unit. It is possib=
le to guide it past the guide peg by=0Ameans of a screwdriver inserted t=
hrough the side of the=0Acasting=E2=80=9D.</span></p>=0A<ol style=3D"mar=
gin-top:0cm;" start=3D"1" type=3D"1"><li class=3D"MsoListParagraph" styl=
e=3D"margin-left:0cm;"><span>Can that procedure be carried out when=0Ath=
e OD is still in the car as is implied by the manual?</span></li>=0A<li=
 class=3D"MsoListParagraph" style=3D"margin-left:0cm;"><span>If so, wher=
e is the access point=0Athrough which one can insert a screwdriver? (Str=
ikes me that oil=0Awould gush out=E2=80=A6..If the pump ever restarted p=
umping!)</span></li>=0A<li class=3D"MsoListParagraph" style=3D"margin-le=
ft:0cm;"><span>If not so, is there a trick involved=0Ain getting the plu=
nger up and correctly sited?</span></li>=0A</ol><p class=3D"MsoListParag=
raph"><span>&nbsp;</span></p>=0A<p class=3D"MsoListParagraph"><span>Simo=
n</span></p>=0A<p class=3D"MsoNormal"><span>&nbsp;</span></p>=0A<p class=
=3D"MsoNormal"><span>&nbsp;</span></p>=0A<p class=3D"MsoNormal"><span>&n=
bsp;</span></p>=0A<div>=0A<div style=3D"border:none;border-top:solid #E1=
E1E1 1pt;padding:3pt 0cm 0cm 0cm;">=0A<p class=3D"MsoNormal"><b><span la=
ng=3D"en-us">From:</span></b>=0A<span lang=3D"en-us">Healeys &lt;healeys=
-bounces@autox.team.net&gt;=0A<b>On Behalf Of</b> Henry G Leach via Heal=
eys<br><b>Sent:</b> 30 August 2021 01:57<br><b>To:</b> 'David Nock' &lt;=
healeydoc@sbcglobal.net&gt;<br><b>Cc:</b> 'Healeys' &lt;healeys@autox.te=
am.net&gt;<br><b>Subject:</b> Re: [Healeys] Overdrive pump queries</span=
></p>=0A</div>=0A</div>=0A<p class=3D"MsoNormal">&nbsp;</p>=0A<p class=
=3D"MsoNormal" style=3D"margin-bottom:12pt;">David-help this=0Aguy out h=
ere...he is getting desperate! He has been at this project=0Afor months=
 and can't get enough pressure. What size reamer and=0Awhere can he get=
 one?&nbsp; He lives in UK.&nbsp; Thanks, Hank</p>=0A<p>----------------=
-------------------------</p>=0A<p class=3D"MsoNormal" style=3D"margin-b=
ottom:12pt;">From: "David=0ANock"<br>=0ATo: <a>gradea1@charter.net</a><b=
r>=0ACc: "Michael Salter", "Healeys"<br>=0ASent: Sunday August 29 2021 1=
2:28:02PM<br>=0ASubject: Re: [Healeys] Overdrive pump queries<br><br>=0A=
Smacking the check ball will not make a new seat in the pump. You=0Amust=
 cut a new seat with a special reamer.&nbsp;</p>=0A<div>=0A<div>=0A<p cl=
ass=3D"MsoNormal">David Nock</p>=0A</div>=0A<div>=0A<p class=3D"MsoNorma=
l">&nbsp;</p>=0A</div>=0A</div>=0A</div>=0A</div></body></html>

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