Differential Fluid Change (4MATIC Owners)
12-19-2011, 06:20 PM
#26
Here is a video I found showing the 4m system at work on the w221, check out 1:15, it mentions the integrated transfer case, you were right, my question is what happens to that transfer case on the RWD models, their transmission must have a different part number and must be built without that transfer case right?
http://www.youtube.com/watch?v=ZoIc4SyZy2M
Last edited by LandSeaAir; 12-19-2011 at 06:28 PM.
12-19-2011, 06:28 PM
#27
Okay makes sense. So if this is the case, would that mean that W204 4MATICs have different transmissions than the RWD cars? If its all integrated into one unit than you would need a transmission that has a driveline going to the front and rear whereas the RWD cars just have one going to the rear, and again if its all integrated, the whole unit must be different. Its hard for me to understand.
I know this isn't a reliable source but this listing for a W204 trans claims it works for RWD and AWD, how could that be?
http://www.ebay.com/itm/722-9-TRANSM...#ht_1251wt_945
I've been look for a 4MATIC system diagram, no luck yet.
I know this isn't a reliable source but this listing for a W204 trans claims it works for RWD and AWD, how could that be?
http://www.ebay.com/itm/722-9-TRANSM...#ht_1251wt_945
I've been look for a 4MATIC system diagram, no luck yet.
here is a picture from the GLK sales brocher. looks like its all integrated into the same unit.
12-19-2011, 06:40 PM
#30
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Nissan GT-R BE / '12 Ducati-1199 Panigale S / '12 C300-4M Loaded/GLK350-4M Loaded
Here's a C-Class / GLK Class 4-Matic differential.... Sure looks like it has a drain and filler plug to me!
... seen here too! (#3).. but the filler plug looks sealed off in this sketch.
... seen here too! (#3).. but the filler plug looks sealed off in this sketch.
Last edited by MBRedux; 12-19-2011 at 09:36 PM.
12-19-2011, 06:41 PM
#31
And to top it all off, it seems the E-Class for some reason has a separate transfer case, so JC had correct info, just different for the C-class, taken from the MBusa website:
notice bottom left of picture
notice bottom left of picture
12-19-2011, 06:41 PM
#32
Super Moderator
The transfer case is integral with the transmission. It bolts straight onto the back of the 722.9 in place of the tail shaft. All Benz 4Matic systems are modifications of the same theme. The E Class & C Class have the same system. Propshafts are different.
Last edited by Glyn M Ruck; 12-19-2011 at 07:49 PM. Reason: Softened & accuracy.
12-19-2011, 06:46 PM
#33
12-19-2011, 06:53 PM
#35
lets not talk about the e-class. the w212 should be the same, but keep that in e-class forums please. people here are getting confused........
in the end, no transfer case like the older 4matic for the W204. front and rear differentials need different gear oil (85w-90)
in the end, no transfer case like the older 4matic for the W204. front and rear differentials need different gear oil (85w-90)
12-19-2011, 07:00 PM
#36
Super Moderator
Of course the transfer case is integral with the transmission. It bolts staraight onto the back of the 722.9 in place of the tail shaft. All Benz 4Matic systems are modifications of the same theme. The E Class & C Class have the same system. Propshafts are different.
5 speed C Class Transfer Case:
5 speed E Class Transfer Case:
Last edited by Glyn M Ruck; 12-19-2011 at 09:15 PM.
12-19-2011, 07:10 PM
#38
Super Moderator
The transmission fluid is common sump. There is no seal between transmission & transfer case.
Edit - This appears to apply to W204/W212 I can't identify if this applies from certain VIN numbers. Benz has done a number of running upgrades on the 4Matic system. LandSeaAir - What E Class was that you posted for above?
W203/W211 have a level plug at the rear but no drain & show a seal & run on transmission fluid. Now I intend investigating whether any service has ever been recommended on W203/211 4 Matics.
Both new and old have magnets in the base of the housing.
Edit - This appears to apply to W204/W212 I can't identify if this applies from certain VIN numbers. Benz has done a number of running upgrades on the 4Matic system. LandSeaAir - What E Class was that you posted for above?
W203/W211 have a level plug at the rear but no drain & show a seal & run on transmission fluid. Now I intend investigating whether any service has ever been recommended on W203/211 4 Matics.
Both new and old have magnets in the base of the housing.
Last edited by Glyn M Ruck; 12-19-2011 at 08:13 PM.
12-19-2011, 07:18 PM
#39
And this must be why the 4MATIC engine requires 7.4 quarts of oil while the RWD takes 8.5, always wondered how a awd system could effect engine oil capacity, I learned a lot from this thread!
12-19-2011, 07:34 PM
#40
Super Moderator
Indeed - the driveshaft goes through the sump. This can mess with sucking oil out of a 4Matic's engine. Many gripes on the 203 forum.
12-19-2011, 08:00 PM
#41
The transmission fluid is common sump. There is no seal between transmission & transfer case.
Edit - This appears to apply to W204/W212 I can't identify if this applies from certain VIN numbers. Benz has done a number of running upgrades on the 4Matic system. LandSeaAir - What E Class was that you posted for above?
W203/W211 have a level plug at the rear but no drain & show a seal & run on transmission fluid. Now I intend investigating whether any service has ever been recommended on W203/211 4 Matics. I don't think I have seen any for 203.
Both new and old have magnets in the base of the housing.
Edit - This appears to apply to W204/W212 I can't identify if this applies from certain VIN numbers. Benz has done a number of running upgrades on the 4Matic system. LandSeaAir - What E Class was that you posted for above?
W203/W211 have a level plug at the rear but no drain & show a seal & run on transmission fluid. Now I intend investigating whether any service has ever been recommended on W203/211 4 Matics. I don't think I have seen any for 203.
Both new and old have magnets in the base of the housing.
has been mention before. you can still drain it but you might or might not get all of it out.
12-19-2011, 08:24 PM
#42
Super Moderator
Indeed - Look what I found and I'm pleased I did. With the 5 Speed 4matic the transfer case took gear oil. This applies to W203 & W211. W204 4Matics were a running change to 7 speed - Yes? That is why the EPC is confusing. The above diagrams I have posted are for 5 Speed 4Matics.
Here is oil drain method for 5 speed 4Matics.
Here is oil drain method for 5 speed 4Matics.
12-19-2011, 08:26 PM
#43
Indeed - Look what I found and I'm pleased I did. With the 5 Speed 4matic the transfer case took gear oil. This applies to W203 & W211. W204 4Matics were a running change to 7 speed - Yes? That is why the EPC is confusing. The above diagrams I have posted are for 5 Speed 4Matics.
Here is oil drain method for 5 speed 4Matics.
Here is oil drain method for 5 speed 4Matics.
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12-19-2011, 09:13 PM
#44
Super Moderator
Thanks guys. It's been some useful research. The W204 4Matics were never built in RHD so I have limited knowledge of them.
12-19-2011, 09:21 PM
#45
just looked on japan site. they offer 4matic but in LHD form. never knew 4matix is so exclusivly for LHD markets.....
12-19-2011, 09:33 PM
#46
Super Moderator
No RHD 4Matics built.
I've had my say here. If you want any more go look it up yourself.
I've had my say here. If you want any more go look it up yourself.
12-19-2011, 09:35 PM
#48
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Actually the driveshaft doesn't go through the sump... it goes under it... there's a a channel under the sump where it goes through.... thus it decreases the capacity of the sump in AWD 4-Matics... this was widely discussed in the GLK forum.
12-19-2011, 09:55 PM
#49
Super Moderator
12-19-2011, 09:57 PM
#50
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