<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Segoe UI Emoji";
panose-1:2 11 5 2 4 2 4 2 2 3;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Over the years one thing that became evident to me, that it is best on some parts to have an expert (someone who does these repairs everyday) repair the unit for you. I have had many Girling boosters rebuilt by the vendor I mentioned previously, Power Brake Exchange, and never had an issue with their work. Granted it has been a long while since the last one and I did not check with them before posting this. </p><p class=MsoNormal>Perry</p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:kags@shaw.ca">Earl Kagna</a><br><b>Sent: </b>Friday, June 12, 2020 8:59 PM<br><b>To: </b><a href="mailto:michaelsalter@gmail.com">Michael Salter</a>; <a href="mailto:bspidell@comcast.net">Bob Spidell</a><br><b>Cc: </b><a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a><br><b>Subject: </b>Re: [Healeys] Brakes</p></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'>Fred / Bob:<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'>I have to agree with Michael on this – rebuilding the Girling servo is tricky at best. Plus, there is always the possibility that the bore in the servo body has enough damage that it would need to be repaired – sleeved – which is a complicated job as the bore is stepped. And you don’t really know it’s needed until it is off the car and apart.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'>Another diagnostic measure: pull the rear spark plugs - if there is brake fluid being drawn in, they will very white in appearance, depending on the brake fluid (glycol or silicone).<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'>Quite a few us here on the west coast in BC have installed the PBR VH44 servo with great success. It is a more modern design – a diaphragm servo, rather than the vacuum piston. Plus it has a very convenient bleed screw of it’s own – particularly helpful if DOT 5 silicone brake fluid is being used. Plus, it doesn’t look too out of place on the Healey, unless you paint it pink! <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'>I’m sure that a search of the usual Healey parts suppliers will tell you if they are available in North America. We have dealt with Hydroboost in Australia – last time we ordered, they supplied fitting kits as well – a couple of pre-bent brake pipes, a correct vacuum hose (it needs to be about 4 inches longer than the original), and a pair of Kilmartin mounting brackets (they are very close neighbours).<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'>One caution: the PBR VH44 is made in several boost ratios, so pay attention to get the correct version for the Healey. Check their web-site – all kinds of interesting information on servos.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'>Hope this helps.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'>Earl Kagna<br>Victoria, B.C.<br>BJ8, BT7 tri-carb<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div><div><div><p class=MsoNormal><b><span style='font-size:12.0pt;color:black'>From:</span></b><span style='font-size:12.0pt;color:black'> <a href="mailto:michaelsalter@gmail.com" title="michaelsalter@gmail.com">Michael Salter</a> </span><span style='font-size:12.0pt;color:black'><o:p></o:p></span></p></div><div><div><div><p class=MsoNormal style='background:whitesmoke'><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#141100'>Sent:</span></b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#141100'> Friday, June 12, 2020 9:35 AM<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:whitesmoke'><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#141100'>To:</span></b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#141100'> <a href="mailto:bspidell@comcast.net" title="bspidell@comcast.net">Bob Spidell</a> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:whitesmoke'><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#141100'>Cc:</span></b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#141100'> <a href="mailto:healeys@autox.team.net" title="healeys@autox.team.net">healeys@autox.team.net</a> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:whitesmoke'><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#141100'>Subject:</span></b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#141100'> Re: [Healeys] Brakes<o:p></o:p></span></p></div></div></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#141100'> <o:p></o:p></span></p></div></div><div><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'>I would agree with Bob that the most likely problem is the servo. </span><span style='font-size:12.0pt;color:black'><o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'>You can check this fairly easily by loosening off the lower 10/32 nuts and screws on the servo chest and gently prying it open a little. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'>If the servo is leaking fluid will run out.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'>IMHO Bob's 50/50 success rate for rebuilds is a little optimistic </span><span style='font-size:12.0pt;font-family:"Segoe UI Emoji",sans-serif;color:black'>🙄🙄</span><span style='font-size:12.0pt;color:black'>.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'>Unless you are fairly skilled you are unlikely to succeed on your first few attempts.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'>Commercially I gave up rebuilding them many years ago because of the dismal success rate and started installing PBR VH44 servos, possibly still available from Healey Surgeons, which require different mount brackets and fluid lines. We never had a VH44 come-back.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'>M<o:p></o:p></span></p></div></div><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'> <o:p></o:p></span></p></div><div><div><p class=MsoNormal><span style='font-size:12.0pt;color:black'>On Fri., Jun. 12, 2020, 12:19 p.m. Bob Spidell, <<a href="mailto:bspidell@comcast.net">bspidell@comcast.net</a>> wrote:<o:p></o:p></span></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:12.0pt;color:black'>If a significant amount of brake fluid is leaking into the servo you <br>will get white smoke out of the tailpipes (under most running <br>conditions). This is because the engine will suck fluid into the intake <br>manifold through the vacuum hose. The most likely cause of this is the <br>'gland' seal; which seals the vacuum piston--the large canister on the <br>servo--from the servo's hydraulics (it has two pistons; one is activated <br>by pedal pressure to gate air at ambient pressure into the canister to <br>assist a second 'master' cylinder, which powers the slave cyls).<br><br>You can rebuild the servo yourself; I've done it once successfully, <br>others report 50-50 success. I've not heard overwhelming stories of <br>success with aftermarket (Lockheed, or an Australian equivalent) <br>replacements, but some like them. They aren't apparently, a 'drop in' <br>replacement without some fiddling, and hearsay says they're not as <br>effective as the Girling (putting my Nomex suit on). The hydraulic <br>section of the servos is not much different from ordinary brake <br>cylinders. The shop manual has an excellent explanation of the theory <br>and workings of the servos; it took me several reads and some cogitating <br>to grok it all, but they are pretty ingenious.<br><br>If you're not getting any white smoke, your guess is as good as mine; I <br>have the same problem--although I haven't pulled the drums to check the <br>rear slave cylinders (fronts are not leaking)--but since I had bled them <br>before the problem occurred I'm thinking I screwed the pooch somehow on <br>the bleed.<br><br>Bob<br><br><br>On 6/12/2020 8:46 AM, Fred Wescoe wrote:<br>> I am having issues with the brakes on my 66 BJ8. I am new to this BJ8 <br>> with boosted brakes, but I have owned a BJ7 for many years. I don't <br>> find any clues in the shop manual or in Norm Nock's tech talk manual.<br>><br>> When I press the brake pedal, it slowly goes to the floor. I am losing <br>> hydraulic fluid in the reservoir but there are no apparent leaks that <br>> I can see. There are no fluid spots on the garage floor at each wheel <br>> and no evidence of brake fluid on the wire wheels which would indicate <br>> a leak. I have pulled each wheel and I do not see brake fluid anywhere.<br>><br>> Is it possible that the fluid is leaking into the brake booster? How <br>> am I able to check that out? If this is the case, can the booster be <br>> repaired by me or someone else, if so, who. If fluid is leaking into <br>> the booster, is it better to simply replace the booster and who is a <br>> good source?<br>><br>> Something always happens before what promises to be a great sunny weekend.<br>><br>> Thanks for any help,<br>><br>> Fred<br>><br>><br>><br><br>_______________________________________________<br>Support Team.Net <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Suggested annual donation $12.75<br><br>Archive: <a href="http://www.team.net/pipermail/healeys" target="_blank">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive</a><br><br><a href="mailto:Healeys@autox.team.net" target="_blank">Healeys@autox.team.net</a><br><a href="http://autox.team.net/mailman/listinfo/healeys" target="_blank">http://autox.team.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com" target="_blank">http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com</a><o:p></o:p></span></p></blockquote></div><p class=MsoNormal><span style='font-size:12.0pt;color:black'><img border=0 width=708 height=1 style='width:7.375in;height:.0104in' id="Horizontal_x0020_Line_x0020_1" src="cid:image002.png@01D64103.63F53550"></span><span style='font-size:12.0pt;color:black'><o:p></o:p></span></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:12.0pt;color:black'>_______________________________________________<br>Support Team.Net http://www.team.net/donate.html<br>Suggested annual donation $12.75<br><br>Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive<br><br>Healeys@autox.team.net<br>http://autox.team.net/mailman/listinfo/healeys<br><br>Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/kags@shaw.ca<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>