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Old 07-14-2014, 07:17 PM   #3
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Join Date: Mar 2014
Location: Albuquerque
Posts: 46
2002 Boxster S 5-chain 97K hard miles. IMS bearing NSK 782 6204DU17 ENGLAND in perfect condition observed visually. Seals removed; no evidence of any grease, all surfaces oil covered. About 1/2 cup of dark oil recovered from IMS. The oil from the IMS is compared with oil from the engine in an attached picture. A lot of oil apparently has made it through the bearing seals over time and miles. Removing BOTH SEALS would let the engine communicate with the IMS directly. With the IMS so low in the engine, the bearing would appear to only be protected from debris by the fresh, filtered DOF spray. The engine oil quite apparently gets by the bearing seals into the IMS, but does not get out so easily. The fresh, clean DOF oil continuously sprayed onto the outside of the bearing would likely ameliorate the old, possibly rancid and acidic, oil seeping through the inside seal from the IMS. Ummm? When in doubt, go with the recommendation of only removing the outside seal? I'll think about it for a bit before pulling seal/s.
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