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Yes, the pump still turned freely.

Vacuum Pump shaft was sheared as expected. Managed to install the pump without removing any accessories. A little tight on lower left nut but I used the special wrench to hold nut in place (with oil filter installed did not have room to turn wrench) and then tightened the other 3 nuts to force...

Thanks, My plane is tied down out in the Florida sun and don't want to get in over my head on this project. I only quickly looked at the right side of the VAC pump to get a model number and went home to see what Youtube videos were available. Couldn't find much in the way of a useful video...

Does anyone have any experience with the removal of the Dry VAC pump on a 1975 Grumman AA5 Traveler (Lycoming 0-320 E2G)? Can the pump be removed without removing MAGs/Oil filter or any other accessories? Do I need to purchase the special VAC pump removal tool or will ratchet open ended...

The 12.2 value is what is indicated on the aircraft digital voltage meter. I brought the battery home and let it sit on a charger overnight. I checked it with my Multimeter and got 13.1 volts. Not that it proves that the battery is 100% healthy. The new battery was installed AUG of 2020 and...

On a 1975 AA5 Traveler my voltage indications occasionally drop off to 12.2 or battery voltage. Normally, there is 14 or 14.1 indicated on the meter. Should the charging system suddenly drop to battery voltage or should it gradually taper off as the battery reaches fully charged? I have...

The problems associated with the Control console became insurmountable. I do not have any circuit board soldiering experience. To check the transistors they would need to be removed. I thought maybe just replacing all transistors may be the way to go. However, the Motorola 2N3116 are...

I see the address now. Let me call.

Where are you located?

Looking at possibilities for upgrading an autopilot to a Trio Pro Pilot for a Grumman AA5. Very few shops install Trio products. I found one shop Plane Instruments in Winter Haven, FL. However, very few reviews online and no pilots I know have ever been there. Anyone had work done at this...

For anyone thinking of checking the brushes it is not an easy process. Evidently, they have a special tool to hold the spring loaded brushes in place during reinstallation. The way I got around it is to remove all 4 screws on the top releasing the spring tension. Place the brushes back in...

After I reinstalled the brushes I ran the motor for about a minute and then rechecked the resistance on the C/D terminals. Using the same settings in the Multimeter I got a reading of .004. Which fell right in line with your earlier post of 3 to 4 Ohms for a 14V motor. The bearing above the...

Servo is reassembled. Cleaned out any remaining brush residue dust. Tested on 12V car battery. Motor rotates with power supplied to the C/D terminals (reversed black and red leads between the C/D terminals to confirm both directions function). Solenoid engages/disengages when power supplied...

Brushes look like they are in good condition to me.

Can the brushes be viewed in this motor without major disassembly?

Forgot to add It is a 14V system.

With the Multimeter set on 3 KOHMs I got a reading of .01. What is the interpretation of this reading?

In the Grumman AA5 the Servo Motor is located in the center console. Just to the right of the pilot's foot. Took about half an hour to remove console panels for access. For the rest of the tests I'm going to pull the Servo out for better access and see if there is a brush inspection panel...

If the C/D terminals are producing a voltage of approximately 11V no matter what the position of the Bank control. Should not the motor responds to the voltage in some way. Such as full deflection of ailerons in one direction?

To check the resistance of the drive motor would I insert the OHM meter black/red terminals into the C/D slots on the Servo side or must I have access to the motor windings?