Reading a post in the 601 forum, it refers to fitting an insulating washer under the ignition coils to reduce heat transfer.  It seems to be specific to the Glossy Black coils of earlier engines but I wonder if it is also recommended for the matt black ones of later production?  The document I refer to is:

Jabiru Engine Service Bulletin
Subject: Ignition Coils
Applicable: Jabiru 2200 S/No. 22A1292 to 22A1528
Jabiru 3300 S/No. 22A0360 to 22A0536
Compliance: Before Next Flight

Date: 3rd September 2003 Ref: UKJSB004

Revision: 2 Dated 9th September 2003

 

Ignition Coils - Glossy Black Coils marked "LEADING GX"

We have been monitoring a problem with ignition coils fitted to recent Jabiru engines, we have seen tell tail signs of break down leading to either a misfire, failure or call to ourselves for advice. The tell tale signs are: hard to start, ignition noise on RT, missing at high load typically in the climb or eventually complete failure at Mag Check.

The original GREY coils P/N P10522N have never given problems with over 600 coils in service in the UK and only 1-2 failures since 1996.

Our supplier stopped producing this coil and Jabiru sourced another coil P/N P10523N, it can be identified by a gloss black casing and text "LEADING GC'. Some of these coils have been breaking down on high usage aircraft, as well as a couple of moderate usage.

The engines fitted with these coils are:

2200
22A1292 to 22A1528

3300
33A0360 to 33A0536

Grey coils are considered good.

Matt Black coils P/N P10524N with a rectangular projection on the side and marked TEK (looks like TEC) JAPAN FL833 are considered good.
All new engines from S/N 1529 (2200) and 537 (3300) use TEK coils.

Recommended Action

If your engine is within this serial number range or you have a glossy black coil fitted :

  1. Do not fly until replacement coils have been supplied by Jabiru.
  2. Strongly recommend that all cowled installations supply cooling air to the coils
  3. Fit insulating washers P/N PH4A004 under coils to prevent heat transfer

Views: 1063

Reply to This

Replies to This Discussion

the fibre washers were fitted at factory after 2003. 

the coils have changed a couple more times since the article, I beleive the cooling tube recommendation is still current

it was really invented to fix the faulty brand coils

I need to also comment on this - there are some folks using the cheaper Honda lawn-mower coils, which have the same bolt hole spacing and plate curvatureas the official Jabiru coils. I went to Jabiru USA in Shelbyville TN to watch the NTSB un-crate Bill Lanman's 3300, from his 601xlB.

The day before Bill's fatal accident he installed one official coil and one mower coil. The NTSB runup test found the cause of his engine out - the mower coil failed completely (2.5 hours total time) and he unknowingly cracked the distributor cap HT tower on the good coil side. The cracked cap worked OK until the crack propagated all the way around the base of the center wire receptacle.

If any of you Jabiru guys are using the mower coils, be advised. Bill had the cooling tubes correctly done, the insulating washers were there, and it "worked" for almost 3 hours... from Louisville to Kenosha WI. I believe when he landed in Valpariso to re-fuel, hot day, heat-soaked under cowl, etc. Things went south just 40 minutes after that.

RIP, Bill Lanman.

Brian,

Thanks for sharing.  You should also post this info to the thread on the 601/650 forum where they are discussing the accident.  It is certainly a good warning for all of us.  When it comes to aircraft, you want only the best, most proven parts installed.  Saving a few bucks can cost you your life. In addition to the coil issues, I've also heard of builders having problems with off-brand distributor caps cracking... another thing to be wary of.

Tim

Thanks, Tim. Have done that, including all of the details as found out... I just want to make sure all interested parties know what NOT to do with a Jabiru, regardless of airframe. Be safe and have fun, y'all!!
Advise to call Pete and confirm what you need. Don't be stupid and take short cuts and wreck because someone "suggested" you could
Do without.
Juan

Hey folks,

I spoke with the fine people in Shelbyville, TN, Nick at Arion Aircraft, about the magnetos. He mentioned they think the Honda mags are likely better than the Jabiru mags made in China. He also said reading the resistances can be tricky and are probably ok if they're near the specification range and especially not ground. I have the Honda mags and decided to stay with them since I only needed to replace the modified piggyback connector that cracked (which in my case slips onto the mag's tab) and I think was the cause of my mag not firing and misfiring intermittently recently.

If I had Jabiru mags I would also comply with the above SB. I hope this information helps us.

Blue skies and God bless,

Tim

The plane ran good today. Regarding the Honda mag discussion, I wanted to add I don't know if Honda has improved its mag / coils over the years.

Tim

RSS

New from Zenith:

Zenith Planes For Sale 
 

Classified listing for buying or selling your Zenith building or flying related stuff...

                                                     

Weather Maps


Custom Instrument Panels
for your Zenith
:

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, power distribution panel, Approach Fast Stack harnesses, Dynon and Garmin avionics, and more.


Custom Upholstery Kits for your Zenith Aircraft:

Zenith Vinyl Upholstery Kits


Zenith Apparel from EAA:


Zenair Floats


Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz


Builder & Pilot Supplies:

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

 

West Coast USA:

Transition Training:

Wheels & Wings

Pro Builder Assistance


 

Aircraft Spruce & Specialty for all your building and pilot supplies!

© 2019   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service