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Old 11-11-2002, 12:18 AM
kerry kerry is offline
Registered User
Join Date: Jan 2002
Posts: 18,355
If it's similar to the 123 it could be the pushbutton unit, the switchover valve or the vacuum actuator. It's easiest to check the actuator and work your way back. At the actuator you can determine whether the pushbutton unit and switchover valve are sending vacuum to the actuator.
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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