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Old 09-19-2001, 10:06 PM
Benzmac Benzmac is offline
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Actually I have seen professional techs have problems in this area. What I do is soak the o-rings in oil then install them. Next put a little drop of oil on the mating surfaces of the expansion valve before installation.

When you install, you will have to tighten the 3mm allens side by side at 1 turn each, alternating untill done. Then install the outboard pipes carefully making sure that they are fully engauged. Then tighten.

Good luck
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Donnie Drummonds
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MERCEDES SPECIALIST 11 YRS
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