|
Transfer
Case Shifter Linkage
Knocking TSB
About half
a year after I bought my TJ, I started to notice a funny knocking under
the driver side floor when accelerating or when going over a bump. It
was a kind of a low "thump, thump, thump" in rappid succession
and then it'd go away. Well, since I was still under warranty, I decided
to take my Jeep in to have it looked at. Well, six visits later, at two
different dealerships (once to see a DC specialist) and a lot of anguish,
I was told that nothing was wrong and that the noise I was hearing was
completely normal... "all Jeeps are noisy." Pissed off, I started
to do some research on-line and on the bulletin boards and found out that
a lot of people had this exact same problem. Enough so that the NTHSA
issued a TSB to have it fixed. So, with a TSB number in hand, I went back
to my dealer and what did they say? "Oh yes, there is in fact a TSB
for this, what do you know?" An hour later my Jeep was fixed and
the knocking was gone.
WHAT I FOUND OUT
I don't know who or why anyone would design a T-case shifter linkage as
complicated as this or why it is mounted to the tub but this is where
the knocking is coming from. What happens is that the bronze bushing/retainer
holding the torque shaft wears out and/or the rubber gasket tears on the
end. This allows the torque shaft to travel back and forth too much causing
one of the links to tap on the bracket on the tub. This problem can also
occur if you install a 1" body lift without installing the T-case
shifter drop brackt supplied with many kits.
HOW TO FIX IT
If you are still under warranty, take the TSB (Technical Service Bulletin)
number below to your dealer and have them deal with it. If you are over
warranty, you can by the TSB kit from your dealer for about $19.
TSB 21-09-98 JUL 98
Transfer Case Shifter - Creaking/Thumping Noise
Part Numbers
05014148-AA Torque SH 21-105-001
Although the kit comes with new bushing for every link end, the only ones
I needed was the bronze bushing/retainer and gasket. To install it, you
will need to remove the body bracket from the tub. In order to do this,
you will find the 4-bolts holding it in place underneath your driverside
carpeting. The rest can be accessed from under your Jeep and you do not
need to jack anything up or remove your T-case skid.
Please let me know if you have any questions.
Copyright©
2000-2003 4x4xplor.com - All rights reserved.
|