Great post.
Thanks!
daniel ... "Liesel" '84 300D Turbo
--- "Mark in Fort Collins, CO"
<beeser750@earthlink.net> wrote:
---------------------------------
Yeah, they're small, but they're tough li'l lumps.
They were used on every model car MB made in the mid-
to late-'70s, including the 450SE/L, which had a lot
more power in Europe than the ones we got here. The
only exception may be the 450SEL 6.9. And no,
there're no B And M, Transgo or Mr Shift kits
available. You're just not going to get that bark
going into third....
I like the BulkPart transmission kits:
the parts for yours are listed here:
http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=2&Category_Code=722-1
These kits are unusually complete, and include more
seals and steel rings than you will need. They have
the pan and valve body gaskets, too, which Ma sells
seperately. They come with a piece of paper listing
tightening torques, cleareances and commonly-needed MB
part numbers (like the various sized band anchor
pins). They even include the plastic bits which hold
those pins for the middle and rear bands, which
invariably break as you disassemble the transmission.
After 30-some years and uncountable heat/cold cycles,
they're pretty brittle.
As to which of the kits to get, it's going to depend
on what you find when you take yours apart. Was there
solid matter on the bottom of the pan? Any metal
bits, beyond tiny metalics? As I recall, yours just
died, in the middle of an intersection. That makes me
think something solid and metal broke, and you're
going to need to get parts from a place that breaks
down transmissons and sells used parts. Or get a
parts tranny from the salvage yards..
You'll need to get into the clutch packs to determine
if you need new discs. On my 300,000 mile '79 300SD,
there was no indication at the bottom of the pan of
worn clutches, but a couple of the friction discs in
the forward clutch were down to the metal. There
should be .040" to .060" clearance in each of the
clutch packs. Anything more than that, and you'll
definately need the kit with the friction discs.
Check the bands, too. There are oil grooves that run
inside of them. If the grooves sort of disappear at
the ends of the bands, where they clamp together, they
will need to be replaced. If your fingernail can
easily prick the friction material from the steel
banding, they'll need to be replaced. The center and
rear bands are not adjustable by conventional means;
you must change the little anchoring pins, available
in different lengths. There should be 2 mm to 4 mm
play in the bands..
Think twice about replacing the valve body gasket.
It's usually dry and brittle, and should be replaced.
BUT, there're a BUNCH of small steel and plastic
balls, and some very small valves and springs located
between the three(!!) sections of the valve body.
They LOVE to pop out and roll all over. And getting
them back in is a trick. Don't go in there unless you
have a diagram of some sort to refer to. I used a
copy of the page showing an exploded view of the valve
body found in the multi-make transmission repair
manual at the Denver Public Library. (Sorry I can't
remember the publisher. These manuals are fantastic.
Generally black and gold cover. Not Chilton's,
Clymer's, Haynes,... I'll have to go the shop and
look at one to remember....)
I don't know of any on-line manuals. There used to be
an ATSG paper manual on these, but it's now out of
print. I've never seen one. Nor have I ever seen the
factory manual. Maybe on E-bay? I take a LOT of
photos as I take the transmissions apart, and lay out
everything the way they came out. I use a felt pen to
number or label things, too.
You'll need to get the nut which bolts the flange to
the output shaft. The original one takes a special
socket. I don't have this socket, and end up using a
chisel to get it off, which ruins it. Fortunately,
Rusty's place:
sells these, and the new ones use a conventional
12-point socket. He also has some of the bronze,
spacer-bushings, which I like to replace, too.
That's all I can think of, for now. Hopefully, I've
answered your questions, and this information is worth
something more than what you paid for it. You'll just
have to start tearing into your transmission, and
write back when something arises.
Mark in Fort Collins, CO
-----Original Message-----
From: Lawrence Rhodes
Sent: Jan 28, 2008 6:28 PM
To: diesel_mercedes@yahoogroups.com
Subject: [diesel_mercedes] Transmission gives up. I
win.
Got the tranny out of my 1977 240D (not much to it is
there. Smallish
tranny). Now which kit should I get to put in? Is
there a racing kit(haha
a little joke) I'd certainly like to do a good job. Is
there any spring
balancing or shimming on this early mechanical advance
automatic???? Thanks
for any info & you guys have been a great help as well
as the Mercedesshop
site. Is there a rebuild manual on line? Lawrence
Rhodes....
____________________________________________________________________________________
Never miss a thing. Make Yahoo your home page.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/diesel_mercedes/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/diesel_mercedes/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:diesel_mercedes-digest@yahoogroups.com
mailto:diesel_mercedes-fullfeatured@yahoogroups.com
<*> To unsubscribe from this group, send an email to:
diesel_mercedes-unsubscribe@yahoogroups.com
<*> Your use of Yahoo! Groups is subject to:
No comments:
Post a Comment