Rotax 912 Carb Overhaul (Bing 64) Walkthrough ...


The Bing 64 Overhaul process includes the following steps ...
  • 1. Carbs removed from aircraft.
  • 2. Carbs are fully dismantled.
  • 3. Carbs are deep cleaned in our ultrasonic cleaner.
  • 4. Carb's components are removed from the cleaner and rinsed.
  • 5. Carb's (bodies only) are soda blasted if necessary.
  • 6. SkyDrive / Conair overhaul kits are fitted.
  • 7. Carbs are rebuilt.
  • 8. Carbs are refitted.

When should I consider overhauling my Rotax 912 carbs?

We recommend that carbs that are overhauled either at 600 hours or more than 5 years since new or last overhauled (as part of Rotax's 5 year rubber replacement recommendation) whichever comes sooner. Commonly we get asked to overhaul Rotax 912 carbs at a 200 hour service when they get a full strip / inspection and it is discovered that the floats are flaking, weigh different amounts when they have surface dried, items like the jet needle show signs or wear, or the o-rings are no longer providing a seal as they were intended to due to rubber perishing.



How much does it cost?

Please see pricing page for the current price.

This price includes SkyDrive / Rotax 912 overhaul kit plus butterfly valve "peen over" screws, carb cleaner, lubricants, loctites and blasting soda if used.



On-Site cleaning service vs. Postal service?

The pros of on-site cleaning are that we can remove and refit your carbs for you and then balance them afterwards (at small additional cost). Also we can repair / replace damaged choke / throttle cables whilst we are on site (at additional cost). There is little point in having your carbs overhauled and balanced if your throttle and choke cables are sticking and preventing your carbs from working properly.

The pros of sending them to us for overhaul in the workshop is that if they are particularly soiled the bodies (only) can be soda blasted to remove marks that didn't come off in the ultrasonic cleaner. Also you avoid having to pay the mileage charge for a site visit.



Rotax Aircraft Engines Bing 64 carburetor before cleaning

Bing 64 before cleaning begins!

Here you can see the carbs before we start cleaning.

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Rotax Aircraft Engines Bing 64 carburetor before cleaning

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Rotax Aircraft Engines Bing 64 carburetor before cleaning

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Rotax Aircraft Engines Bing 64 carburetor before cleaning

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Rotax Aircraft Engines Bing 64 carburetor before cleaning

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Rotax 912 Bing 64 carburetor in the ultrasonic cleaner

In the Ultrasonic Cleaner!

Next they are stripped down and all parts placed in the ultrasonic cleaner ...

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Rotax 912 Bing 64 carburetor overhaul kit

Rotax's 912 / Bing 64 overhaul kit !

Here's is the overhaul kit as it comes from SkyDrive / Conair ...

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Contents of a Rotax 912 Bing 64 overhaul kit

And this is what's inside ...

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Rotax 912 Bing 64 carburetor components removed from cleaner 1

Remove the parts out of the ultrasonic cleaner.

Here are all the original parts removed from the ultrasonic cleaner.

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Rotax 912 Bing 64 carburettor components removed from cleaner 2

And carb body a bit closer up ...

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Soda Blasting a Bing 64 carburettor

Soda Blasting the Rotax 912 carburettor body.

If the external body of the carb has really stuborn dirt / discolouration then we soda blast the external surface (ONLY) at a very low PSI. The inside of the carb is usually more than adequately cleaned by the ultrasonic cleaner. Soda blasting is a completely non-destructive blasting media. The next step is to replace all the old o-rings, and rebuild the carbs with the new components from the overhaul kit.

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Rotax 912 carb cleaned view 1

And here is the finished item ...

These next few photos show the deep cleaned / overhauled carb next to the other carb (yet to be cleaned) off the same aircraft for comparison. This particular set of carb had 500 hours service.

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Rotax 912 carb cleaned view 2

And here is the finished item ...

These next few photos show the deep cleaned / overhauled carb next to the other carb (yet to be cleaned) off the same aircraft for comparison. This particular set of carbs had seen 500 hours service and were believed to be 18 years old.

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Rotax 912 carb after cleaning 3

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Rotax 912 carb after cleaning 4

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Rotax 912 carb after cleaning 5

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Rotax 912 carb after cleaning 6

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whats left in cleaner after Rotax Aircraft Engines 912 carb has been cleaned

And finally ...

Here's what came off both the interior and exterior of these carbs in the ultrasonic cleaner. And there was plenty of sludge, grite and flakes in the bottom after the cleaning solution was poured out ...

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If you'd like to have us deep clean and overhaul your Rotax 912 carbs please give us a ring.

Our Hours:

The mobile is normally answered during the following times ...

Monday - Sunday: 8:30 am - 9:30pm

Please leave a message as we may be unable to answer. We will call you back!

AeroFix Aviation Ltd
Bolton
Lancashire
United Kingdom
BL3 4NN
Telephone: 07779 147 229
E-mail:
Enquiries@AeroFixAviation.co.uk