Gentle Warning - Service your 722.9 Transmission every 39K miles 60K Km's
Member
Joined: Nov 2011
Posts: 82
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From: Toronto, Canada
2018 GLC300 4Matic- White
See 722.6 tranny picture at:
http://www.benzworld.org/forums/w210...ssion-faq.html
post #6
The TC should look the same.
http://www.benzworld.org/forums/w210...ssion-faq.html
post #6
The TC should look the same.
Senior Member
Joined: Jul 2013
Posts: 493
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84 300d 2009 e320 bluetec (retired)/, now 2012 E350 4-matic blueefficiency automatic
MBZ sell the TC plug with seal for about $4. The plug comes pre-treated with a lock tight material. There are two common sizes that MBZ uses. The part department can give the right size with the VIN.
Junior Member
Joined: Jul 2012
Posts: 71
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2010 C300
I serviced the transmission on my 2010 C300 2wd this weekend. Thanks to the forum it went very well. A few things that I can add:
1) The crankshaft nut is 27mm, and it allows you to easily rotate the engine to get to the TC drain plug. Engine turns clockwise as you face it.
2) There is a catalytic converter bracket beneath the transmission that does block access to the drain plug. It is easily removed with six bolts, and once off, the fluid will drain from the TC without dribbling.
3) I made a fill adapter using a 12x1.5 drain plug from O'reilly's. Drilled a hole thru it, and used JB Weld to attach a barbed nipple. Cost about $6.00.
4) Used a drill powered Jabsco pump to fill the transmission. I use this pump on my sailboats to drain the engine oil.
5) Judged the temperature by feel. It worked well, and the spill over worked fine.
All the other stuff is in the other emails, so I won't bother with those details.
1) The crankshaft nut is 27mm, and it allows you to easily rotate the engine to get to the TC drain plug. Engine turns clockwise as you face it.
2) There is a catalytic converter bracket beneath the transmission that does block access to the drain plug. It is easily removed with six bolts, and once off, the fluid will drain from the TC without dribbling.
3) I made a fill adapter using a 12x1.5 drain plug from O'reilly's. Drilled a hole thru it, and used JB Weld to attach a barbed nipple. Cost about $6.00.
4) Used a drill powered Jabsco pump to fill the transmission. I use this pump on my sailboats to drain the engine oil.
5) Judged the temperature by feel. It worked well, and the spill over worked fine.
All the other stuff is in the other emails, so I won't bother with those details.
Member
Joined: Nov 2011
Posts: 82
Likes: 0
From: Toronto, Canada
2018 GLC300 4Matic- White
Yes, there is only one on the TC. It's wheel-like, so needs to be rotated until the drain plug is at 6 o'clock position. Lots of people use a large screw driver or pry bar to rotate the TC clockwise (front to rear view).
MBZ sell the TC plug with seal for about $4. The plug comes pre-treated with a lock tight material. There are two common sizes that MBZ uses. The part department can give the right size with the VIN.
MBZ sell the TC plug with seal for about $4. The plug comes pre-treated with a lock tight material. There are two common sizes that MBZ uses. The part department can give the right size with the VIN.
Had I not read this thread/discussion forum, I would be just screwed up as many!
Thanks folks...great and helpful forum for people like me with no background in the vehicle repair/components.
Junior Member
Joined: Apr 2008
Posts: 31
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From: Calgary
2010 C350 4M
Alright....took the car to the same dealer and they lifted up. Before taking me in, they realized there is TC drain screw!!! I went in and confirmed it. Now the dealer is offering to do the entire drain for FREE. They charged me less amount for the transmission drain because it didn't include the TC. Normally the complete drain is about $500 here. The fact is that they are correcting their mistake, but I need more from them to make me happy
Had I not read this thread/discussion forum, I would be just screwed up as many!
Thanks folks...great and helpful forum for people like me with no background in the vehicle repair/components.
Had I not read this thread/discussion forum, I would be just screwed up as many!
Thanks folks...great and helpful forum for people like me with no background in the vehicle repair/components.
Now I just need to wait and see if the folks here in Calgary give me the same runaround.
Member
Joined: Nov 2011
Posts: 82
Likes: 0
From: Toronto, Canada
2018 GLC300 4Matic- White
Member
Joined: Nov 2011
Posts: 82
Likes: 0
From: Toronto, Canada
2018 GLC300 4Matic- White
They also confirm that the transmission fluid has to be changed only ONCE in the lifetime of the car. I assume this is true...or do I have to do more reading on that claim as well?
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Junior Member
Joined: Apr 2008
Posts: 31
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From: Calgary
2010 C350 4M
They also confirm that the transmission fluid has to be changed only ONCE in the lifetime of the car. I assume this is true...or do I have to do more reading on that claim as well?
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
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'08 C300 4Matic Sport, '02 530i
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2005 C 320 CDI
No TC drain plug ion 722.9 box
Hi Guys,
I'm pretty sure I have one of the 722.9 gearboxes without the TC drain plug. I recently serviced the my box but could not find the drain plug. My question is how to I now go about replacing all the fluid including the TC fluid if I don't have a TC drain plug.
Any help on this problem will be greatly appreciated.
I'm pretty sure I have one of the 722.9 gearboxes without the TC drain plug. I recently serviced the my box but could not find the drain plug. My question is how to I now go about replacing all the fluid including the TC fluid if I don't have a TC drain plug.
Any help on this problem will be greatly appreciated.
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Joined: Jul 2013
Posts: 493
Likes: 14
84 300d 2009 e320 bluetec (retired)/, now 2012 E350 4-matic blueefficiency automatic
Hi Guys,
I'm pretty sure I have one of the 722.9 gearboxes without the TC drain plug. I recently serviced the my box but could not find the drain plug. My question is how to I now go about replacing all the fluid including the TC fluid if I don't have a TC drain plug.
Any help on this problem will be greatly appreciated.
I'm pretty sure I have one of the 722.9 gearboxes without the TC drain plug. I recently serviced the my box but could not find the drain plug. My question is how to I now go about replacing all the fluid including the TC fluid if I don't have a TC drain plug.
Any help on this problem will be greatly appreciated.
Check to see if mbz sell the TC plug for your car using the VIN. See Wiki for a copy of the "flushing or pumping" out the atf
https://mbworld.org/wiki/images/f/f1...nflush2-1-.pdf
The 722.9 will use a similar method, except no dipstick tube and the use of a weir tube to adjust the atf level. See AP27.00-P-2702W for the filling procedure.
2009 e320 bluetec
Last edited by dave2001auto; Oct 14, 2013 at 12:59 AM.
Thread Starter
Super Moderator
Joined: Jun 2008
Posts: 19,942
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
A 2010 should have a drain plug. From approx August 2010 build onward they are 722.9 Plus transmissions with 120,000Km drain & the new Blue 236.15 fluid.
Most dealers appear too lazy to remove the plastic plug in the bellhousing, rotate the engine until the TC plug lines up with the hole & remove it.
It should never be necessary to do the 722.6 flush procedure on a 722.9. That is for post 1999 722.6 transmissions that had their TC drain plug removed by some cost saving bean counter.
With 722.9 only a very few early transmission had no drain plug mainly fitted to S Class. Even late 7 speed W203's had a drain plug.
Most dealers appear too lazy to remove the plastic plug in the bellhousing, rotate the engine until the TC plug lines up with the hole & remove it.
It should never be necessary to do the 722.6 flush procedure on a 722.9. That is for post 1999 722.6 transmissions that had their TC drain plug removed by some cost saving bean counter.
With 722.9 only a very few early transmission had no drain plug mainly fitted to S Class. Even late 7 speed W203's had a drain plug.
Last edited by Glyn M Ruck; Oct 31, 2013 at 07:56 AM.
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Hello Glyn,
Interested to know the latest thinking on whether to flush my 5 speed .(no drain plug).
The dealers mechanic who I trust said to just drain it & I think in the past you have said the same as long as the fluid is clean & not burnt.
At the 50,000 km drain the fluid was clean .
All this 'religious fervour' of complete draining of the 7 speed , is making me twitchy !!.
Thank you.
Young John.
Interested to know the latest thinking on whether to flush my 5 speed .(no drain plug).
The dealers mechanic who I trust said to just drain it & I think in the past you have said the same as long as the fluid is clean & not burnt.
At the 50,000 km drain the fluid was clean .
All this 'religious fervour' of complete draining of the 7 speed , is making me twitchy !!.
Thank you.
Young John.
Thread Starter
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
JC ~ The 7 speed stresses it's fluid charge considerably more than the 5 speed. All those extra gear changes, clutch slips & lock ups. The fluid never looks great out of a 7 speed.
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Joined: Mar 2008
Posts: 3,714
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Thank you Glyn.
Makes me wonder about the oppositions 8 speed!
The old ZF 4 speed always just needed a regular drain too & went on uncomplaining for ever.
Makes me wonder about the oppositions 8 speed!
The old ZF 4 speed always just needed a regular drain too & went on uncomplaining for ever.
MBWorld Fanatic!
Joined: Mar 2008
Posts: 3,714
Likes: 56
From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
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Joined: Oct 2012
Posts: 583
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2026 GLC300 4Matic (X254)
A 2010 should have a drain plug. From approx August 2010 build onward they are 722.9 Plus transmissions with 120,000Km drain & the new Blue 236.15 fluid.
Most dealers appear too lazy to remove the plastic plug in the bellhousing, rotate the engine until the TC plug lines up with the hole & remove it.
It should never be necessary to do the 722.6 flush procedure on a 722.9. That is for post 1999 722.6 transmissions that had their TC drain plug removed by some cost saving bean counter.
With 722.9 only a very few early transmission had no drain plug mainly fitted to S Class. Even late 7 speed W203's had a drain plug.
Most dealers appear too lazy to remove the plastic plug in the bellhousing, rotate the engine until the TC plug lines up with the hole & remove it.
It should never be necessary to do the 722.6 flush procedure on a 722.9. That is for post 1999 722.6 transmissions that had their TC drain plug removed by some cost saving bean counter.
With 722.9 only a very few early transmission had no drain plug mainly fitted to S Class. Even late 7 speed W203's had a drain plug.
Still looking for fluid CAPACITY (different for RWD and 4MATIC) and drain instructions on "Plus" transmissions and TCs with the new thin fluid and long drain intervals.
Thread Starter
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Thanks for the US intro dates. The plants must have been working off stock of the previous transmission.
