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tommyfn
Member
Date registered: Jun 2014
Location: Norway
Vehicle(s): 300GD lwb 87'
Posts: 28
| GL275 transmission trouble
Hey. Im having trouble in my 87' 300gd, the transmission is popping out of 1st gear occasionally... I changes all the rubber rings on the rods under the car, it made it a little better. They are not bent, and for me it looks like they are positioned right. I loosened all of them, when the box was in "N", and they were all in line.
I have ordered oil with 236.2 spec, and will change when it arrives in the mail. But im afraid its worn out? What can be wrong here?
Regards
Tommy |
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bram_r
Expert
Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
| Re: GL275 transmission trouble
When the gearshifter is not in any of the gears, you can insert a 6mm rod at the underside of the gearshifter through the gearshifter arms.
That is the basic position when adjusting your shifter rods.
gr. Bram |
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AlanMcR
Expert
Date registered: Apr 2006
Location: US, CA, Los Altos
Vehicle(s): G300DT E300DT 230SL
Posts: 3500
| Re: GL275 transmission trouble
bram_r - 8/10/2016 12:47 PM When the gearshifter is not in any of the gears, you can insert a 6mm rod at the underside of the gearshifter through the gearshifter arms. That is the basic position when adjusting your shifter rods. gr. Bram There is a piece of useful advice!
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tommyfn
Member
Date registered: Jun 2014
Location: Norway
Vehicle(s): 300GD lwb 87'
Posts: 28
| Re: GL275 transmission trouble
Thanks for the tip but....
It did not help. It was also adjusted correct. But i tried to adjust it so it pulled a little extra in 1st, no improvement.
Kinda grey oil in it, i changed today. Worn out ???
Its so strange, cause when it is engaged in 1st it works well with absolutely no weird sounds :/ |
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tommyfn
Member
Date registered: Jun 2014
Location: Norway
Vehicle(s): 300GD lwb 87'
Posts: 28
| Re: GL275 transmission trouble
Can it be the synchronizing rings that are worn out?
I find it easier to get it into 1st if i roll slowly (5km/h f.example) |
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petermerle
Expert
Date registered: Apr 2006
Location: Cape Town ( deep south )
Vehicle(s): W460 *1, W123 *2, W124
Posts: 1315
| Re: GL275 transmission trouble
I believe Mercedes does not keep "any" spares fro this gearbox . Friend here has tried to source some of the specialized bearings unsuccessfully. CAn anyone confirm this. |
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tommyfn
Member
Date registered: Jun 2014
Location: Norway
Vehicle(s): 300GD lwb 87'
Posts: 28
| Re: GL275 transmission trouble
Im looking for an auto case. Guess it will be some work to get it working perfectly, but worth it in the end. Im tired of this. |
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bram_r
Expert
Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
| Re: GL275 transmission trouble
tommyfn - 8/24/2016 11:47 PM
Can it be the synchronizing rings that are worn out?
I find it easier to get it into 1st if i roll slowly (5km/h f.example)
Indeed, maybe syncroniser rings or the clutch doesn't completely disengage.
When it comes to rebuilding, I would go for a different transmission instead of putting a lot of money in a GL275 (717.42x)
gr. Bram |
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tommyfn
Member
Date registered: Jun 2014
Location: Norway
Vehicle(s): 300GD lwb 87'
Posts: 28
| Re: GL275 transmission trouble
I will try to change brake fluid on the clutch. And maybe it works a little better while I find a suitable 720.1 case from a 280ge. Im not satisfied with the getrag so wont cost any money on it  |
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bram_r
Expert
Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
| Re: GL275 transmission trouble
Of course there are plenty options to find a better 5 speed; from the iron box 711.11x to more modern Getrags 717.44x as found on 290GD's, Sprinters or 717.460 as found on C-class.
Always check if the starter is on the correct side (right side for m110). |
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tommyfn
Member
Date registered: Jun 2014
Location: Norway
Vehicle(s): 300GD lwb 87'
Posts: 28
| Re: GL275 transmission trouble
Yeah, I've considered the 711.116 case since I plan on getting bigger wheels anyway and the 5th gear with 0.8~ ratio would not be needed.
But I prefer automatic so hope i can find one and get all the vacuum details as well! |
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tommyfn
Member
Date registered: Jun 2014
Location: Norway
Vehicle(s): 300GD lwb 87'
Posts: 28
| Re: GL275 transmission trouble
Changed fluid on the clutch today... And i dont know for sure but I think it got a little better.. Maybe some of the problem was that it didnt disengage 100% ? And the grey oil was because of all the synchroing and grinding gears? :p |
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tommyfn
Member
Date registered: Jun 2014
Location: Norway
Vehicle(s): 300GD lwb 87'
Posts: 28
| Re: GL275 transmission trouble
711.116 on the way. Now it is soon a real mercedes, with 100% oem parts... Hehe! |
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