Is it possible to access the valve body accumulator switches without removing the transmission? Could I gain access by just removing the transmission pan?

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1990 190E 3.0L

The accumulators are in the lower portion of the v/b so it should be easy but depending on what you're going in after you may need to drop the filter.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

Took the valve body off which was surprisingly easy. My goal was to inspect the accumulator switches because of a lead that I received about my reverse making a whistling noise and/or not having reverse, or very little reverse. Its been going on a few years now since the reverse has been problematic, but I did not get a rebuild because one day the reverse was fully functional. I decided to check the valve body and they only thing I did find was 2 beige looking o-rings around a plastic part that looked like they needed replacing. Both had a diagonal cut, maybe they are like that on purpose, I'm not sure. But they were shrunken and allowed the part to move a littler too freely so I replaced them with new o-rings. I have not noticed a difference in the reverse and I think the whistling noise may still be present

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1990 190E 3.0L