Removal Sequence on My 6A
After reading all the posts on this thread, I assumed the position with a lot of apprehensions, head first with my back bent over the wing spar. First, everything in the way or attached had to be removed. In my case, this included:
- throttle quadrant lowered
- brake cylinders removed from the rudder pedals and down tube ears and pushed up and forward of the cross over tubes
- rudder cable linkages removed from outer down tube ears
- Right side vent hose removed
I left the individual rudder pedals attached for the entire process.
Next, the AN-3 bolts (6) securing the mounting saddle blocks to the fuselage structure were completely removed from the blocks otherwise the blocks would not be able to slide under the NACA vents. The center saddle mount halves were removed at this point and their orientation was labeled.
The sequence to move the tubes for removal was as follows:
- the left side saddle block and tubes were moved as far forward as they would go.
- the right side saddle block and tubes were moved as far aft as possible (at this point the right block was still not able to be removed).
- the left side saddle block and tubes were pushed up as far as they would go. (This provides enough clearance on the right side saddle block to clear the upright vertical structure. A little twisting of the right saddle block clock-wise a quarter of a turn provided ample clearance to remove the entire assembly.
Locations of control cables for heat control boxes, parking brakes, and other components can cause issues or dictate which assembly side gets pushed and which gets pulled. My cables were on the left side dictating that the right side block had to get pulled out first.
These steps took 45 minutes to complete. Iím heading to the welder tomorrow.
Iím hoping to reinstall by just reversing the sequence. Reassembly may be complicated by the finger gussets on the left rudder tube assembly causing limited spacing between the right rudder tube in front of it. This could limit the ability to twist the assembly Ė maybe not. I donít see how the saddle blocks could be reinstalled (whole) independently of the tubes. Worse case, the saddle blocks can be cut in half and the tubes installed separately.
Keep in mind, your airplane may be totally unique requiring a different set of steps/sequences. As with most tasks on this yearís Condition Inspection, there was a lot more apprehension generated from reading these posts than actually doing the work. The fuel tank removal was another walk in the park. Iíll get back to you with a report on the installation when that is done. Good luck.
RV-6A N30YD Bill Boyd's creation - I just keep it flying.
Acrosport II N827JA My creation - still rolling
MiniMAX N962JA Another of my creations - retired
Grumman AA-1A N9462L Restoration - sold