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Old 01-29-2009, 10:10 PM
BathCity BathCity is offline
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Join Date: May 2008
Location: Southeast Michigan
Posts: 84
Setting Transmission vacuum & modulator

1983 300CD Turbo, 199,400 miles.
I have been reading the threads on the flaring/shifting issues with the transmission here and elsewhere and started the check out of mine, this is where I am at.

1-adjusted linkage to VCV at IP to have the proper clearance at WOT
2 -Removed lines to 3-2 valve and tees, replaced tees with straight hose
3-at double tee from main line vacuum to brake booster = 20 in vacuum
4-at line to trans modulator = 10in vacuum
5-VCV vacuum starts at 10 in and drops to zero at WOT
6-Cleaned bajo bolt at intake manifold, found crud in the bolt, but little, if any, in the fitting. Cleaned out bolt.


I believe I have to adjust the VCV up to get to 15 at idle, does this sound right?

She is still flaring, much more at 2-3 than at 3-4, but not flaring anywher near as much.
I will also recheck the trans fluid level, this time in nuetral. She was about 1/2 pint low today, so checking in uetral rather than park might change the level reading.

After doing the above, I will adjust the modulator a turn CCW to see what happens.
__________________
1983 Mercedes 300CD Turbo- 199,370 miles - Lapis Blau
1974 Mercedes 240D - 186,445 miles - Aqua Blau
1982 Volvo 244GL Diesel wagon - 168,956 miles - to be sold
1994 Chevy G30 6.5 Diesel "short bus" converted for camping, painted red white & blue & white stars 78,956 miles
JD F935 diesel front mower
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