Alhall

Have a M20C at 0A4 Johnson City will show it about any time 423-571-5055

Has anyone checked the muffler? It could be blocked some way.

Retention springs are used for more than ground operation. There what retracts your flaps by pushing the flap up and forcing the hydraulic fluid back thru the system. They are what holds your flaps up. If one was to break or come loose it would have half the force when retracting and also be In a bind. One flap may hang slightly down but both are fastened to the same actuator.

It sounds to me that one of your flap retract springs may have broken. Drop the panel that covers flap shaft area and you can see the actuator shaft springs,shaft, and the whole mechanism.

Bob what is the leaver with the knob next to the trim wheel? My 64 does not have that.

When I did mine I removed the floor from the front. The floor is riveted to an angle that is bolted on each side. The bolts are hard to get to. I removed I think about 10 rivets on each side the propped the floor up with pieces of wood.

I suspect one tank expanded and the other siphoned through the vent or the cap with a hose.

Pro seal buy small tube from Aircraft Spruce and hand mix small amount by hand. Remove screw apply sealent and install screw.

When the Prop(hub) AD came out Hartzell offered a swap for a new Prop for 5k some M20c will have that AD free prop with the B hub.

Love my Johnson Bar. I also know a 130 lb 70 year old lady flying an M20E with a Johnson Bar. Just saying

When it's in the 20's I use a small preheater I made from a ceramic heater and aluminum dryer hose. Stick the hose in the cowl flap for 10 or 15 minutes. Works good. Al

The Slick no's installed on mine are 4370 and 4347. The 4347 is the duel point mag.

Just saw one on barnstormer.

Robert I was talking about the line from the carb to the firewall. I'm pretty sure mine had an orifice fitting at the carb. Who knows I could be wrong. Al

The line going to the instrument has a small orifice at the fitting. Would be easy to have a restriction at the beginning of it. Al

I never look at that indicator. I use the position of the control yoke, out about six inches.

Had to replace that fuel pressure line on my M20C last year. Started leaking fuel and dripping on the exhaust pipe. It was old and deteriorating.

Was it very hard removing the studs ? Thinking about overhauling or replacing my governor. Al

Search for the service bulletin SB20-217 it shows some pictures of where to look. I did not remove the whole baggage floor just the side rivets. The front is riveted to an angle that is bolted in. The bolts are hard to get to. Then I propped the floor up with two wood blocks. Two of the rear side rivets hold the brackets for the Actuator springs. Might be able to leave those rivets that hold the brackets. Yes mine was cracked and the rib was also cracked. I found it after reading some post on this forum. You also have to remove the rear seat and panels in that area to get to the back side of the spar to buck rivets.

The kit from Laser is about $200. I'm old and slow and it took me about 35 or 40 hours. I did a a lot of cleaning while I had it apart. I have heard figures of $1200 and $3000. If you do the mod before it cracks the rib it would not be as big of job.

Just finished installing the rear spar center splice mod on my plane. I don't think stepping on the flap will cause any damage to the rear spar. All it does pull the shaft out of the hydraulic cylinder. The problem was the rear spar center splice was too thin material and flexed each time the flaps were lowered due to the pressure applied at the hinge of the actuator. Al

The kit to repair the rear spare center splice should be more like $180 from Laser. Bought one three months ago. $1200 for the kit and repair is no a bad price.

Thought I would repost a few of the pic of my repair.

No that's not it. I don't see it in the search. Must have been deleted. It had couple thousand reviews and lots of post. Some I had posted.

Rear spar center splice inspection for cracking in the area of the hydraulic actuator hinge.