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Boy G
Expert
Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
| What part no. is a 300GD auto box.
Please can someone clear up the different auto box part no.s for a 617 powered 300 GD and a 300D sedan (if there is a difference)?
Thank you.
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Inkblotz
Expert
Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
| Re: What part no. is a 300GD auto box.
Boy G
I believe the only real differences are slight variations in the gearing ratios, the rear flange and how some of the sedans are set up to start in second gear. I remember reading about several sedan tranny swaps for the G tranny over the years. Perhaps Warren will chime in on this.
Mark |
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roughneck
Expert
Date registered: Apr 2006
Location: UK, Germany & USA
Vehicle(s): 270 cdi.300 GD 300 GE.lwb 300 GE.swb. Disco 2
Posts: 4398
| Re: What part no. is a 300GD auto box.
There must be a difference, on the G there is lock down for hill decent or crawl on first gear, not on Sedan also same feature enables tow start, also not on Sedan, I have one, a 300 GD auto box that is I will check it out before I deliver it to Stuttgart. |
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Razon
Date registered: Jul 2008
Location: Vancouver, BC
Vehicle(s): 1986 280ge Cabrio, 617A, 5sp manual
| Re: What part no. is a 300GD auto box.
On top of the allready mentioned, the case, the oilpan and oil filter are different. I looked inside a G tranny, but not in a sedan so I don't know if they share any components. |
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Boy G
Expert
Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
| Re: What part no. is a 300GD auto box.
roughneck - 5/6/2011 6:30 PM
There must be a difference, on the G there is lock down for hill decent or crawl on first gear, not on Sedan also same feature enables tow start, also not on Sedan, I have one, a 300 GD auto box that is I will check it out before I deliver it to Stuttgart.
Thank you Bill.
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Fernando BR
Date registered: Jan 2007
Location: Brasil
Vehicle(s): G500/05 300GE/91 300GD/80
| RE: What part no. is a 300GD auto box.
Hi Andrew , the G tranny is an older model than turbo engine. G is 720.108 ( W4A018) sedan is a 722.xxx. Pics ( thanks Guido!), so you can see whats is different.
 (tranny 1.JPG)
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mortinson
Expert
Date registered: Apr 2006
Location: Madrid, España
Vehicle(s): '98 G300TD LWB, '98 E300TD Saloon
Posts: 1355
| RE: What part no. is a 300GD auto box.
In addition, the G has also breathers for wading deep water (see the two tubes at the top of the gearbox in the third picture). |
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Steve D
Veteran
Date registered: Apr 2006
Location: Denver, CO
Vehicle(s): 1984 280GE cabrio; 2011 Ford Expedition
Posts: 112
| RE: What part no. is a 300GD auto box.
I have been told the G auto box has straight cut gears for strength whereas the sedan auto box has helical cut gear that are quieter. |
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roughneck
Expert
Date registered: Apr 2006
Location: UK, Germany & USA
Vehicle(s): 270 cdi.300 GD 300 GE.lwb 300 GE.swb. Disco 2
Posts: 4398
| RE: What part no. is a 300GD auto box.
mortinson - 5/8/2011 11:03 PM
In addition, the G has also breathers for wading deep water (see the two tubes at the top of the gearbox in the third picture).
The sedan boxes have breathers, they are just not piped up to be above the water line.
For those that have these autos in their G, the last picture you can see toward the tail of the G Box a black plastic fitting with a white plug next to it,That's the little beggar that causes all kinds of gear box and electrical problems when it goes wrong, the neutral and park lock out. On mission vehicles they were rewired so that you could start in any gear.
Edited by roughneck 5/9/2011 3:27 AM
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kerry460
Elite Veteran
Date registered: Apr 2006
Location: tasmania australia
Vehicle(s): 1984 300GD LWB WAGEN
Posts: 611
| RE: What part no. is a 300GD auto box.
G,,day slightly o/t but following Bills comment,
my G is wired with push button starter, due to switch failure.
and will start in gear , very handy at times.
kerry |
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Inkblotz
Expert
Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
| RE: What part no. is a 300GD auto box.
Early 300d Sedan auto box shared with a 450. Note the vent tube on top.
The top one is a later model and the bottom is earlier.
Mark
Edited by Inkblotz 5/10/2011 7:21 AM
 (Screen shot 2011-05-09 at 7.18.20 AM.png)
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Screen shot 2011-05-09 at 7.18.20 AM.png (227KB - 0 downloads)
Screen shot 2011-05-10 at 7.18.25 AM.png (684KB - 0 downloads)
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Boy G
Expert
Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
| Re: What part no. is a 300GD auto box.
Where is the part number to be found on these boxes?
Fernando - that is original G wagon box in your picture yes? What is the stuff on top of the valve cover? It looks like "Tempomat" cruis control stuff.
Mark apart from the output shaft is there a difference between these boxes and the G box. (Straight and helical gears aside) |
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Inkblotz
Expert
Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
| Re: What part no. is a 300GD auto box.
If I remember correctly the early 300sd like the one in the photo, because of it's size started in first instead of second like a number of the smaller sedans.
I believe the G starts in first as well.
For the price I think it would be worth a shot to give it a try. I personally have not done this trans plant but have heard of other who have with much success.
BTW I pulled both of these tranny photos off current Ebay postings.
Mark
Edited by Inkblotz 5/10/2011 5:12 PM
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Fernando BR
Date registered: Jan 2007
Location: Brasil
Vehicle(s): G500/05 300GE/91 300GD/80
| RE: What part no. is a 300GD auto box.
Hi Andrew , yes thats the one used on 300GD , this truck had " tempomat" , pic of the engine IP side. Its a nice pretty new engine !! Dont understand why someone
take it out.Anyway each man has different thought.
take care !
 (tranny 4.JPG)
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Boy G
Expert
Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
| Re: What part no. is a 300GD auto box.
Mark I put an auto in my 300GD for a while but it must have been from a sedan and was very frustrating to drive. Either it was a higher ratio or pulled away in 2nd and I did not know how to make it use first.
There is a little solenoid (just in front of the two round things in Fernandos pictures) that is involved with first gear.
No one know where the part no is written?
Edited by Boy G 5/11/2011 2:07 AM
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Inkblotz
Expert
Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
| Re: What part no. is a 300GD auto box.
I guess if you found one of the ones that started in first you many have been happier. I remember reading about that solenoid issue as well and how they resolved it to start in first, either on this board, ClubG, or Benzworld. I do not remember where.
Mark |
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Inkblotz
Expert
Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
| Re: What part no. is a 300GD auto box.
A couple of good reads.
http://www.continentalimports.com/ser_ic20242.html
http://www.mercedesdismantlers.com/722.3and722.416_transmission_adj...
Also some rebuilt trannys for sale: the 115s and the 116 chassis would have the similar tranny. Give them a call and ask which tranny starts in first.
http://www.adsitco.com/category.asp?CID=1634&VID=
Edited by Inkblotz 5/11/2011 7:35 AM
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Fernando BR
Date registered: Jan 2007
Location: Brasil
Vehicle(s): G500/05 300GE/91 300GD/80
| RE: What part no. is a 300GD auto box.
Andrew , you will find the number on tranny passenger side (RHD). |
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SamG
Member
Date registered: Nov 2015
Location: northern Norway
Vehicle(s): 1985 W460 300GD LWB
Posts: 8
| RE: What part no. is a 300GD auto box.
Hei all,
Old topic, but I happen to install the same gearbox as in the first pictures of this post. I have 2 questions regarding the connections. what are nr 1 and 2 connected to?
Is the vacuum hose nr 3 connected to anything?
Thanks! |
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SamG
Member
Date registered: Nov 2015
Location: northern Norway
Vehicle(s): 1985 W460 300GD LWB
Posts: 8
| RE: What part no. is a 300GD auto box.
Hei Fernando , or anybody else  I am about to install that same gearbox (720.108), I think I figured out all the connections so far, apart from one: On your second picture is a little bolt visible on the right side just above the kickdown-switch.
On other automatics there seems to be a rod connected to this going to the valve-cover on the engine and there connected to the gas.
Do you know what funktion that bolt has? On my box is just a hole at that place, will the gearbox work anyway or will I have to replace it? Thanks, Sam
 (tranny2_marked.jpg)
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