How to Adjust Camber on a PA28-140
Does any of our Tech People know how to adjust the main gear camber? Thanks
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The only reference in the service manual is in Ch 7A for PA28R's. Toe in is 0 +/-1/2*. Page 2I11 starts the procedure, and the correction table is on 2I12. I see no reference to setting camber.
Tom Jackson
PA28RT-201, N3022U
Tappahannock, VA (KXSA)
A&P/IA, Private Pilot, IR/A
Thanks Tom. I saw this in the Service Manual. I saw on the internet, they use shims in the upper scissor dog ear. Not sure how this will affect the camber??
A quick thought, too early and not enough coffee yet, is that shimming the scissors at all will only remove play from the scissor to housing hardware, and won't change camber on the wheel at all. Thinking logically, again no reference in the AMM, you'd want to take the wheel off the axle and ensure it's level. If not, you could shim the torque plate to strut hardware to level the axle and reassemble. That should true the camber, then reset the toe-in.
Tom Jackson
PA28RT-201, N3022U
Tappahannock, VA (KXSA)
A&P/IA, Private Pilot, IR/A
Tom, I suspect he's dealing with a slightly bent axle or some other geometry problem on the gear leg. Obviously shimming the torque links only corrects toe issues.
X55, what is the exact issue you are trying to correct.? Carl
49 yrs A/P IA DAL A/C inspector. 172N Rotax IRMT 912/914
Hey planewrench, one of the main tires is wearing unevenly. The inboard side of the tire has no tread while the outboard side has about 1/4 tread left. The upper scissor dog ear on the the ldg strut is tight no room for any shims. I did notice on the annual the mid scissor bolt was sloppy. Installed new tire and tube, tighten the bolt and will start to measure the toe-in and camber.. The axle is an integral part of the lower strut (see pic). I plan on removing the wheel and lower the A/C on wooden V-Blocks the same height as the other wheel axle. Measure the axle angle relative to a waterline and to do the same procedure to the other wheel and compare the results. The other tire wears evenly.
Yeah I had a strong suspicion that was going to be your issue you were talking about. You are correct to measure the angle of the axle.
Suggest you just level the airplane on Jacks, measure left and right axles with a digital protractor will probably give you a good idea if you're wearing sid is slightly bent.
Surprisingly the maintenance manual for the PA 28 series doesn't give any information on fixed landing gear alignment. However for the PA 28R toe in is plus or minus half a degree. They use a simple procedure of a straight edge across both wheels with a carpenter square. Might be worth checking. Carl
49 yrs A/P IA DAL A/C inspector. 172N Rotax IRMT 912/914