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Old 05-11-2016, 11:59 AM
Maxbumpo Maxbumpo is offline
Diesel Preferred
 
Join Date: Oct 2007
Location: Charleston SC
Posts: 2,789
On the wagons with the same system, the check valve is integral to the level control valve. What you are describing are the classic symptoms of a failed level control valve. The seals / o-rings inside the valve might need to be replaced (if you can open that valve up), but I tried twice to rebuild that control valve on my 123 wagon with no success.
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Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC
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