RE: 86 4kcsq vacuum pump

[rwoods@triad1.com (Ron Woods)]

Okay, I too could not find it in the Bentley Manual, but what the hell, I went
for it anyway! 
 
As a matter of fact, there are only TWO nuts holding this pump onto the head
near the front opposite the intake side. Turns out, once you remove the two
nuts, the entire pump will come right off. Actually the push rod inside had
enough pressure on it that it pushed the pump off as I removed the nuts. There
is a rubber o-ring seal recessed into the pump, which I did not have a new one.
I then removed the push rod, rather a large sucker at about 3/8 inches in
diameter and about 4 inches long. Once I had removed the rod, I simply put the
pump back in place, tightened the nuts and I was back in business. I did order a
new o-ring and it should be in at my local dealer today. It was a $2 some dollar
part, no big deal. Now what I intend to do is lube up the actuator with lithium
grease and put it back in when I put the new seal on. I will then let everyone
in the list know whether the ticking sound is still gone. BTW, the entire
process of removing the rod and getting the car up and running again took about
10 minutes. It was well worth the effort! 
 
I tell you, I had forgotten how nice my engine sounded without the horrendous
tick that had been around now for about 6 years. Do I feel stupid now, knowing
that it was something so simple and after replacing the lifters. Oh well, I'll
chalk in up to a learning experience. 
 
This list is EXCELLENT and I'm so glad I stumbled into it! I hope this helps you
out somewhat... Good luck, let us know what you find!  
 
I'm planning on looking deeper into the pump later, without the manual and all!
I've got nothing to loose at this point. Besides, now I have an enormous wealth
of info right here in case I run into problems! <grin>... 
 
-----Original Message----- 
From: DOYT@POBOXES.COM  
Sent: Sunday, May 11, 1997 4:11 PM 
To: RON WOODS 
Subject: 86 4kcsq vacuum pump  
 
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Date: Sun, 11 May 1997 21:14:20 -0400 
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From: "Doyt W. Echelberger" <Doyt@poboxes.com> 
Subject: 86 4kcsq vacuum pump  
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Precedence: bulk 
 
I want to take my 86 4kcsq vacuum pump apart and see if removing the 
actuator stops the ticking sound, like it did for Ron Wood. and others. 
 
O.K., where is it? I mean, in the Bentley.  I looked at that big red book 
for an hour and couldn't find a page dealing with the vacuum pump. 
 
I can find the vacuum pump on the engine, but not in the Bentley. 
 
I have read postings on stopping the ticking that comes from the engine as 
it idles. You just remove the actuator from the vacuum pump, lubricate it 
with lithium grease, put it back in, and enjoy the silence as your engine 
quietly purrs away. 
 
I need some more detailed instructions before I start taking out  bolts and 
prying open seals. Maybe this actuator removal is real easy, but I can't 
even find a picture of it in the Bentley. 
 
So, there is the question. Ron and Pablo, I read your posts about it today, 
but didn't find necessary details about getting out the actuator.  My 
server lost my email for most of the past week, and I probably missed the 
start of the thread. But I want to do this, and am afraid I will 
permanently mess up something if I just start taking things apart. Could 
you copy some details that others sent you, and help me out? Anybody who 
has done this will listened to with great respect. 
 
Doyt 
86 4kcsq