X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from EXHUB003-2.exch003intermedia.net ([207.5.74.29] verified) by logan.com (CommuniGate Pro SMTP 5.4c2a) with ESMTPS id 4843491 for flyrotary@lancaironline.net; Wed, 09 Feb 2011 08:36:33 -0500 Received-SPF: none receiver=logan.com; client-ip=207.5.74.29; envelope-from=jwhaley@datacast.com Received: from EXVMBX003-5.exch003intermedia.net ([207.5.74.45]) by EXHUB003-2.exch003intermedia.net ([207.5.74.29]) with mapi; Wed, 9 Feb 2011 05:35:58 -0800 From: Jeff Whaley To: 'Rotary motors in aircraft' Date: Wed, 9 Feb 2011 05:37:34 -0800 Subject: Replaced Tension Bolt, Oil Seal, Thrust Bearing ... back in the air. Thread-Topic: Replaced Tension Bolt, Oil Seal, Thrust Bearing ... back in the air. Thread-Index: AcvIXoIUdjn2Phn1SaiVZhV8LyGXMg== Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_C03ABB0A7362B84BB53D544B3C305E0E0179F6678454EXVMBX0035e_" MIME-Version: 1.0 --_000_C03ABB0A7362B84BB53D544B3C305E0E0179F6678454EXVMBX0035e_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable All the subject parts were replaced and the airplane was flown this past Su= nday ... post-flight inspection yesterday revealed no more oil leak - YEAH!= ! The tension bolt most of you on the list already know about - replaced one = tapered bolt with one heavier NEW bolt and re-torqued them all. The rear oil seal was replaced because of a nagging oil leak for some time.= My comment here is that the engine was originally a standard transmission,= so I had to purchase a flex plate/ring gear and counter weight for an auto= matic, both of which were cleaned and painted prior to installation. The c= ounter weight has a very small contact surface with the rear oil seal as se= en by about 1/8 of paint worn-off, so I wonder if that slight amount of sur= face wear and possibly assembling the seal and counter weight DRY may have = contributed to the leak. I can't remember whether they were oiled prior to= first assembly or not - so I definitely oiled both this time around and po= lished a larger area on the counter weight with emery cloth. The thrust bearing (front planet) was entirely my fault. It must have slip= ped out of alignment during re-assembly of the PSRU and got pinched between= the housing and planet carrier ... anyway a bad sounding POP was heard as = the PSRU attach bolts were being tightened up ... a new one with lots of gr= ease replaced the broken one. Jeff (Looking forward to oil-streak free flying) __________ Information from ESET NOD32 Antivirus, version of virus signatur= e database 5858 (20110209) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com This message, and the documents attached hereto, is intended only for the a= ddressee and may contain privileged or confidential information. Any unauth= orized disclosure is strictly prohibited. If you have received this message= in error, please notify us immediately so that we may correct our internal= records. Please then delete the original message. Thank you. --_000_C03ABB0A7362B84BB53D544B3C305E0E0179F6678454EXVMBX0035e_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

All the subject parts were replaced and the airplane= was flown this past Sunday … post-flight inspection yesterday reveal= ed no more oil leak – YEAH!!

The tension bolt most of you on the list already kno= w about – replaced one tapered bolt with one heavier NEW bolt and re-= torqued them all.

The rear oil seal was replaced because of a nagging = oil leak for some time. My comment here is that the engine was originally a= standard transmission, so I had to purchase a flex plate/ring gear and cou= nter weight for an automatic, both of which were cleaned and painted prior to installation.  The counter= weight has a very small contact surface with the rear oil seal as seen by = about 1/8 of paint worn-off, so I wonder if that slight amount of surface w= ear and possibly assembling the seal and counter weight DRY may have contributed to the leak.  I can’= ;t remember whether they were oiled prior to first assembly or not – = so I definitely oiled both this time around and polished a larger area on t= he counter weight with emery cloth.

The thrust bearing (front planet) was entirely my fa= ult.  It must have slipped out of alignment during re-assembly of the = PSRU and got pinched between the housing and planet carrier … anyway = a bad sounding POP was heard as the PSRU attach bolts were being tightened up … a new one with lots of grease replac= ed the broken one.

Jeff

(Looking forward to oil-streak free flying)



__________ Information from ESET NOD32 Antivirus, version of virus signatur= e database 5858 (20110209) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

This message, and the docum= ents attached hereto, is intended only for the addressee and may contain pr= ivileged or confidential information. Any unauthorized disclosure is strict= ly prohibited. If you have received this message in error, please notify us immediately so that we may correct our = internal records. Please then delete the original message. Thank you.
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