--> Europa-List message posted by: "Area-51" <goldsteinindustrial@gmail.com>
If anybody has extended field experience overhauling early and late production
9 series engines I am needing some clarity on the following:
â?¢ Some forums make mention of an SB some 10 years ago related to faulty
hydraulic lifters. Is this true? I cannot find any SB on the FlyRotax website.
â?¢ I am tearing down a 1999 914 with 105hrs TSN. It has Johnson HT-900 (Ford
351 Windsor) lifters fitted. 50% of the lifters are presenting signs of early
failure at the lobe contact face. There is no EDM oiler port on these units.
Were Johnson lifters ever fitted as OE components on the 9 series engines?
â?¢ I have removed the lifters from another earlier +2000hr 912UL. They do not
have any branding laser etched. The lifters also have an EDM pinhole port in
the center of the lobe contact face. The lobe contact face on some lifters are
just beginning to present troughing. Do genuine Rotax hydraulic lifters still
support an EDM oiling port on the base of the hydraulic lifter?
â?¢ Did Rotax supplement the current part number for the hydraulic lifter at
any stage?
Any factual industry knowledge is appreciated.
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http://forums.matronics.com/viewtopic.php?p=511314#511314
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