Tom
I have a set of those bushings in my parts supply and the center
metal piece is a slip fit in there normal state. I have not looked at
Tom's tech tip for grease fittings for these bushing for some time but I
think he drills a hole to the center metal piece so it receives lubrication.
You want the center metal piece to be free to rotate.
I think you have got everything right, but when it comes to safety
with the front suspension and other major parts I think it is wise of you to
ask for advice or a second opinion. Don't stop asking questions until you
are satisfied with the answers. Confusion and doubt are the last things
you want.
Compressing different materials like these bushing will generally
result in 2 types of results. First there is compression of the materials
due to the press fit. Second forces tend to move material in the path of
least resistance, in this case the materials will try to elongate. It is
very possible that little to none of this force actually reduces the ID of
the bushing. It all depends on the properties of the materials and the
dimensional tolerances in the parts.
Ron Fraser
-----Original Message-----
From: owner-tigers@autox.team.net [mailto:owner-tigers@autox.team.net] On
Behalf Of Tom Witt
Sent: Monday, June 02, 2003 4:35 PM
To: tigers@autox.team.net
Subject: Lower A-arm bushings (stranger than fiction - HELP!)
Today I started to install my lower A-arm bushings (SS black). Again,:
1. I chamfered the (leading) metal edge as recommended by Tom Hall.
2. I Slightly (and I do mean slightly) honed out the bushing housing to make
insertion smooth (the bushing shell is not loose).
3. I put the bushings in the freezer to shrink them.
4. I greased the housing and bushing.
5. I used a fixture for pressing in the bushing that just slipped over the
rubber part, yet only pushed on the outer metal edge.
6. I made sure the bushing was going in straight.
7. I had a clearance piece for the last part of the pressing for the end of
the bushing to pass through to prevent compressing it.
8. I made sure the bushing seated completely against the housing.
9. I never saw any buckling, distortion or metal shavings when pressing the
bushing in.
10. I compared a pressed and unpress bushing they look similar.
Therefore, can someone PLEASE tell my why pressing the bushing into a
slightly smaller hole caused the center metal piece to fit loosely instead
of
even more snuggly than it did before it was pressed??? The only place where
the inner metal piece fits snuggly is the small inner section (near the
bevel
washer) that overhangs the bushing shell.
This makes absolutely no sense to me and I can't imagine what else I could
have done to install these bushings more properly!!! I used the same method
on
the upper A-arm bushings and the fit was snug throughout both before and
after
pressing.
What can I do about it now? Will tightening the fulcrim pin nuts compress
the
rubber back to the normal size?
Thanks for any help, this doing things right and having them come out wrong
is
really getting old and discouraging. For that matter when I do things that I
am sometimes cautioned against more often than not, those thing work out
right! Go figure?
Tom Wit B9470101
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