I want to rebuilt my manual tranny. - Page 2 - PeachParts Mercedes-Benz Forum

pawoSD · #16 12-13-2007, 10:58 AM

So the manual trannys can wear out too....

I'm at 266k on my auto still shifting perfect. I bet a well maintained auto can last just as long as a manual. Not as fun of course, but way more convenient in the city.

winmutt · #17 12-13-2007, 11:14 AM

Quote:

Originally Posted by pawoSD

I bet a well maintained auto can last just as long as a manual. Not as fun of course, but way more convenient in the city.

Certainly it can last as long, replacing the wear parts is alot more expensive. I will never understand why people think that manuals are bad for city driving. All I see auto drivers doing is constantly using their brakes.

rs899 · #18 12-13-2007, 11:22 AM

Quote:

Is the overdrive just a bigger gear or a 5thgear?

More than you probably ever wanted to know...( dialup users beware -2 meg)

http://www.tonydrews.com/Overdrive/A-type%20OD%20manual.pdf

It's an electromechanical clutched unit that hangs off the end of your gearbox mainshaft. Used on all Britcars from about 1950 to 1980. Also on some Volvos in the early 80s. Really transforms little Britcars into highway cruisers ( well, in the speed aspect anyway)

Rick

pawoSD · #19 12-13-2007, 11:24 AM

Quote:

Originally Posted by winmutt

Certainly it can last as long, replacing the wear parts is alot more expensive. I will never understand why people think that manuals are bad for city driving. All I see auto drivers doing is constantly using their brakes.

I don't need my brakes much in the city because I drive in 3rd gear most of the time, so it slows the car down when I let off the throttle.

Our van on the other hand....that thing will gain speed on a flat surface w/out throttle!

I just replaced my front pads a couple weeks ago....they had 46k on them.

Rotors are still good.

rs899 · #20 12-13-2007, 11:30 AM

Quote:

I bet a well maintained auto can last just as long as a manual

I'll take that bet. If you had ever poked around in both types of transmissions you would wonder how any slushbox would ever get to 50K miles. They have precise roller bearings along with friction clutches and bands along with itty bitty fluid passages (control valve) all lubed with ATF. Very complex piece of machinery with conflicting requirements within. The 722.xxx that MBZ is a marvel in that it routinely goes 250K miles without complaint.

Rick

pawoSD · #21 12-13-2007, 11:33 AM

Quote:

Originally Posted by rs899

I'll take that bet. If you had ever poked around in both types of transmissions you would wonder how any slushbox would ever get to 50K miles. They have precise roller bearings along with friction clutches and bands along with itty bitty fluid passages (control valve) all lubed with ATF. Very complex piece of machinery with conflicting requirements within. The 722.xxx that MBZ is a marvel in that it routinely goes 250K miles without complaint.

Rick

I'm guessing it all depends on fluid maintenace. Thats why I do it yearly.

My dad's is at 293k, and it shifts absolutely flawlessly.

MB trannys last so long because they have such extreme precision

winmutt · #22 12-13-2007, 11:44 AM

Quote:

Originally Posted by rs899

More than you probably ever wanted to know...( dialup users beware -2 meg)

http://www.tonydrews.com/Overdrive/A-type%20OD%20manual.pdf

It's an electromechanical clutched unit that hangs off the end of your gearbox mainshaft. Used on all Britcars from about 1950 to 1980. Also on some Volvos in the early 80s. Really transforms little Britcars into highway cruisers ( well, in the speed aspect anyway)

Rick

One cutaway later I am over that bit of curiosity. My mom had a Volvo with that OD unit. It did make a bit of diff.

Diesel911 · #23 12-13-2007, 11:59 AM

Quote:

Originally Posted by winmutt

Certainly it can last as long, replacing the wear parts is alot more expensive. I will never understand why people think that manuals are bad for city driving. All I see auto drivers doing is constantly using their brakes.

I like manual transmissions (Volvo 244Gl diesel) but in stop-and-go traffic it seems at some point you end up needeing to go too fast for the lower gear and too slow for the higher gear and I don't like slipping my clutch. At the end of the day, after work, stuck in stop-and-go traffic I prefer an automatic transmission.

charmalu · #24 12-13-2007, 11:48 PM

well I have 334000 on our automatic w/o any repairs so far.
so regular fluid and filter changes go a long way.

But I have been eyeballin a manual at P N P. Just in case.

Charlie

t walgamuth · #25 12-14-2007, 01:43 AM

Quote:

Originally Posted by Diesel911

I like manual transmissions (Volvo 244Gl diesel) but in stop-and-go traffic it seems at some point you end up needeing to go too fast for the lower gear and too slow for the higher gear and I don't like slipping my clutch. At the end of the day, after work, stuck in stop-and-go traffic I prefer an automatic transmission.

I don't get all worked up about staying close to the car in front. I just try to keep moving at the fastest pace in which I can keep moving. I let the distance between me and the vehicle in front vary quite a bit. It is a lot more relaxing than trying to keep close to them.

From time to time somebody jumps in front of me though, but since I am relaxed I don't mind much.

Tom W

Cervan · #26 12-14-2007, 04:39 AM

Wow alot of replies! Well mainly my throwout bearing is going bad (that lovely squeal when you let out the clutch) the shifter needs rebuilt and the carrier bearing needs replaced, whats really sad about the tranny, hell the entire car is that it only has 180k on it (Assuming the spedo is not toyed with) the engine in it drank more oil than diesel (Literally, i went to school 2 miles away and had to add oil) So what im thinking is why not rebuild the tranny while its out, and not wait for it to explode when i just get it back together? its like not rebuilding an engine when your doing an engine swap...

t walgamuth · #27 12-14-2007, 07:43 AM

I wouldn't tear it apart at that mileage unless a problem with the tranny was evident.

TO bearings wouldn't count.

Tom W

Stevo · #28 12-14-2007, 10:49 AM

I wouldn't tear into it either. However if its grinding going into gear you are ready for syncros. the 5 spd in my 79 will pop out of first when descending a steep drive way on "compression". I just avoid doing that

At under 200K your tranny should not need a rebuild. When replacing the throw out bearing I would also do the pilot bearing, its cheap and check the out put shaft for slop.

winmutt · #29 12-14-2007, 01:22 PM

Quote:

Originally Posted by Stevo

I wouldn't tear into it either. However if its grinding going into gear you are ready for syncros. the 5 spd in my 79 will pop out of first when descending a steep drive way on "compression". I just avoid doing that

Ill trade that 5 speed for a 4speed with 108k that doesnt do that

t walgamuth · #30 12-14-2007, 01:25 PM

Quote:

Originally Posted by Stevo

I wouldn't tear into it either. However if its grinding going into gear you are ready for syncros. the 5 spd in my 79 will pop out of first when descending a steep drive way on "compression". I just avoid doing that

At under 200K your tranny should not need a rebuild. When replacing the throw out bearing I would also do the pilot bearing, its cheap and check the out put shaft for slop.

Are you sure your linkage is adjusted correctly?

Tom W