Matronics Email Lists

I pulled the exhaust pipes to replace the clamps and there was some oil in the upper cylinder exhaust ports. Another engine I worked on did not have oil there and it shot out less or very little oil o ...

I'm going to remove the bottle for inspection with an endoscope and would like to know what (and if I should) to use to clean the inside and what to add to it on reinstalling. I know glycol (50% glyce ...

In the process of doing some maintenance, I noticed the body of the tach generator can be rotated around its mount axis. The tach itself works fine. Is something loose or broken?

Under what circumstances are "normal" and "R1" pistons used?
If I have a cylinder overhauled, would the original piston be reused?
Is replacing a piston without overhauling an en ...

I have a leak from the back of the primer handle and it's been difficult to figure out. I might just end up replacing the whole thing but was curious if anyone has seen this before.

The top b-nut i ...

Because of some looseness in the wing (55M), I am installing new wing bolts that are of a tighter tolerance. The measurements are a bit uneven between the mount on the wing and fuselage sides and I ne ...

What is the best way to preserve (long term) some compressed air and debubbler tank spares? I currently have them in air tight zip locks with dessicant bags inside. I know items like oil coolers and t ...

Thank you for the input everyone. I was aware of the high level functional differences between the 3; was looking for input on what parts need to be changed internally to convert them into an M9F. As ...

Does anyone know what changes are needed for an M9 to be made into an M9F?

M9-35M to M9F?

One more question. Any way to stop the fuel going to the primer? Last time the primer was apart, fuel as gushing out and made a big mess.

Thank you, Dennis. Ordered.

I recently replaced the o-ring for the primer handle and it's not very smooth to pump. I read somewhere that someone lubed their o-ring prior to installation? Any recommendations?

The compressor stopped building up pressure last two flights.
Engine has 600+ hours - fairly certain it is the original compressor.
There are no leaks in the system while the airplane is parked.

...

Was looking at a video made during a flight close to sunset and I noticed on takeoff (before getting off the ground) a few quick flames shot out of the exhaust.

Is this normal or is it an indicatio ...

I've taken apart the primer handle to replace the o-ring and after the reassembly, it will go into cylinder or system position but it cannot be centered. Has anyone encountered this before? I've disas ...

What you don't say is whether you had done anything to conserve the engine during these three months. If you are not using an M 14 for over a month, it really is extremely prudent to firstly squirt pr ...

If it was me, I would treat the engine as a dry engine and pre oil the system. Also, the oil is draining due to a check valve that is most likely dirty, the oil pump does not need to be changed ...

I have been doing some airframe work and the engine hasn't run for 3 months. All oil from the tank seems to have drained via intake drain and exhaust (will replace the oil pump eventually). Do I need ...

Not yet. I am hoping to replace the intake gaskets/seals within the next 10 days.

I've suggested to the owner than a new piece should be made. You will not find one like this unless you are able to get a hold of the owner of the crashed Yak-55 in Germany a couple of years ago.

P ...