auto trans shifts to early - Page 2 - Mercedes-Benz Forum

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post #11 of 16 (permalink) Old 07-06-2004, 02:59 AM
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RE: auto trans shifts to early

ill have a look for some data on it "if i can get it" that is, but it seems the system is working ok but its an old system based on electronic floor switch linked to vacuum operated solenoid ill do my best to see what i can got hold of[:)]those 3 speed boxes were not that good on the power only way to get best out of them was to use the shift lever from 1-2nd then D with foot to the floor for maximum revs in each gear which defeats the idea of the automatic really ( they are cruisers ) for street power the manual shift is the best
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post #12 of 16 (permalink) Old 07-07-2004, 03:46 PM
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RE: auto trans shifts to early

On my 1973 280SE there was a stick going from the throttle at the fuel-injection that goes down to the automatic gearbox to "tell" the gearbox how much gas you are giving. By adjusting the length of that stick (very easily done) you can change the shiftpoints.

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post #13 of 16 (permalink) Old 07-07-2004, 07:01 PM Thread Starter
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RE: auto trans shifts to early

wohaa!!!!!!! cool
I will check first thing tomorrow... (still waiting on my manual :-( )

Thanks, I will post any updates


Mike
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post #14 of 16 (permalink) Old 07-09-2004, 11:39 AM Thread Starter
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RE: auto trans shifts to early

Hi,
I found the rod that is connected to the acc mechanism (just right next to the fuel distributor towards the fire wall).. now, there are no markings on that rod.... and I really don't know which way to adjust... besides is this like trial and error? I am certain there must be some kind of specs on the Mercedes W107 1977-1979 to adjust the shift points on the tranny..... can anyone help me out [V]

Thanks, Mike
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post #15 of 16 (permalink) Old 07-09-2004, 12:24 PM
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RE: auto trans shifts to early

shorten the length for lazy gearing
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post #16 of 16 (permalink) Old 07-17-2004, 12:50 PM Thread Starter
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RE: auto trans shifts to early

for all that want to know...
the shift points seem to be accurate...
factory spec on the 107.024 is at full throttle and position "D" 1st-2nd ~80kph ~49mph and 2nd-3rd ~140kph ~87mph ....

Cheers Mike
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