At low speed, maybe 25mph we heard/felt a rather loud and solid bang
underneath the 123 300cd. first thought was a flex joint or possibly
an axle......nope. I put the back end up on jack stands and rotated
the drive axle(while in park) and started hearing a distictive clicking
or ratcheting sound coming from the very back of the trans....the
shaft going into the trans. was turning.....what did I do?
1982 300cd 310k miles.

__________________
81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

Did something go haywire with the "park" pawl and engage while you were driving, which caused it to fail, and now it's pseudo-ratcheting in a semi-broken fashion?

Do you have the ATSG manual for the 722.3 transmission?

__________________
James Marriott
2003 Buick Regal
1983 300D (228k, frau Auto)
1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000)
www.engineeringworks.biz
1987 300SDL junker 170k
1982 300SD junker, 265k

If that were the case, wouldn't the trans. still engage? that is not
happening, I have No power being transfered through the tranny.

no

__________________
81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

I read from somebody here on this forum that had bolts at the rubber sphere brake loose and the result was no drive or reverse but wasnt the trannie it self.

Make sure the rear yoke on the transmission is not stripped out. Bit of a long shot probably. Yet it has happened on these cars.

x2

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

heres the thread
Transmission Problem & Fix

I'm gonna drop the drive shaft hopefully this weekend. That does
make a lot of sense. I also forgot to mention that the nut itself
appears to have been covered by a boot.....that has been ripped
away. Clean metal is seen on the nut and spline.......Very out of
place on the underside of my car.

__________________
81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

Thanks, the pics really help put things together

__________________
81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project