wiseng Posted July 24, 2013 Report Posted July 24, 2013 I had to get my Dual Bendix mag sent in for an internal short that resulted in the right mag being hot. I.E. No drop in RPM during the mag check. I was charged 8.5 hours for the R&R. Anyone have any experience from their favorite mechanics on time to do the job. Quality aircraft accessories did the 500 hr inspection and repaired for $950. Quote
N601RX Posted July 24, 2013 Report Posted July 24, 2013 I've done several single mags before and it took a little over an hr to replace and set timing. Can't imagine a dual taking any long. It would be quicker than changing 2 singles. Quote
thinwing Posted July 24, 2013 Report Posted July 24, 2013 when you mean RR that 8hr estimate is if shop overhauls the dual magneto right??If it is for removal ,replacement and retiming....than I would suggust you find a shop that has done one before and can loosen required bolts,remove distributer cap and ship out to mag repair facilty without falling asleep in the middle of it for a 6 hour nap Quote
wiseng Posted July 24, 2013 Author Report Posted July 24, 2013 That was just to remove and reinstall the mag. I was presented a bill for $1194 for the mag repair/inspection.. Quote
bumper Posted July 24, 2013 Report Posted July 24, 2013 wiseng, I had a problem very similar to yours . . . it was caused by an intermittent *open* P-lead within the mag . . . NOT a short! Back when my Mooney had a D3000, the mag left me in a lurch a couple of times. Seems before I bought the place an overzealous mechanic pulled too hard on the mag cover with ignition leads when servicing the points - - it's awkward getting that cover out of the way and in so doing the wire going to one of the sets of points was over stressed and stretched enough for the P-lead wire to break. The wire in question is rubber insulated and when the wire broke the insulation remained intact, pulling the wires ends back together in contact and essentially hiding the damage. That lasted a couple of years until the wire ends arced and melted hidden within the insulation. Every time the wire went open, it caused the engine to hammer and buck. The magneto guy at Sac Sky Ranch said when it went open, removing the capacitor from the circuit, it effectively advanced the spark. bumper Quote
wiseng Posted July 25, 2013 Author Report Posted July 25, 2013 Bumper Waiting on the mag shop report to see what the problem was. I have had 51Am for 16 years. The only other problem I have had with the mag was a bad capacitor bout 6 years ago. The plane came out of annual 3 months and what you described is entirely possible.. What gets me is the 8.5 hr for the R&R. I emailed the mechanic and we are going to have a chat. Quote
jetdriven Posted July 25, 2013 Report Posted July 25, 2013 That's ridiculous. Its a 2 hour job, including setting the timing. I removed both Slick mags and put in Bendix mags, including a new harness which was routed different, in 5 hours. Quote
N601RX Posted July 25, 2013 Report Posted July 25, 2013 These type of post seem to come up every few months, so here is a Lycoming document that shows the hrs they are willing to reimburse shops for who perform labor work. Perhaps you can show this to the shop who billed 8 hrs to change a mag. ssp-875.pdf Quote
N201MKTurbo Posted July 25, 2013 Report Posted July 25, 2013 The first time I R&R the D3000 it took forever and caused me to use a lot of foul language. It is quite a puzzle. After 10 years of owning and servicing the dual mag I can put it on and time it in less then 30 min. If they didn't have any experience with the mag it may have taken that long. You shouldn't have to pay for their education. 1 Quote
wiseng Posted July 25, 2013 Author Report Posted July 25, 2013 I have come to the conclusion on this scenario the time proven "Fool me once shame on you etc.." Quote
orionflt Posted July 25, 2013 Report Posted July 25, 2013 On 7/25/2013 at 12:31 PM, N601RX said: These type of post seem to come up every few months, so here is a Lycoming document that shows the hrs they are willing to reimburse shops for who perform labor work. Perhaps you can show this to the shop who billed 8 hrs to change a mag. that document is from 2000, it is now 2013 so those numbers do not take into account inflation........if t took 2.5 hours then now it would have to be at least 8 hrs I would defiantly be questioning the amount of time he took to do the job, even adding in the cowl R&R and maybe pulling the vacuum pump he has a lot of unaccounted for hours. as for the 950 mag repair that is a good price, but where did the the other $244 come from? you could ship them around the world twice for that amount. by the way what shop should we be avoiding? Brian Quote
jetdriven Posted July 25, 2013 Report Posted July 25, 2013 The previous owners of our plane got banged for a 1000$ charge to R&R a Bendix D2000 dual mag due to "hard starting". Then a couple months later the whole fuel injection system was overhauled due to "hard starting" and after that, no more repairs in that area. Perhaps a failure of diagnosis? Quote
wiseng Posted July 25, 2013 Author Report Posted July 25, 2013 OK ,the long version. Hot right mag. Brought into West Texas Aero and specifically told the boys to check the P lead and obvious connections that would cause such. Was inspected and told it was internal to the mag and got the feeling then. Shipped off to Quality Aircraft accessories for repair and 500 hr inspection. Got mag back, installed and its fine. Got $1800 bill for the mag work I.E. 8.5 hours to R&R mag @ $80/Hr and for the mag rework $1018 with a %20 markup (which is reasonable not the labor). Called QAA and asked about what repairs were done. New points, gears, shaft bearing, condensers, capacitors. and impulse springs. With the exception of the shaft bearing (which is condition based) this is all standard replacement for a 500 Hr inspection from QAA. The mag had 360 hrs and 4 yrs since last inspection. So i am probably going to bitch some more and see if I can get the labor cost down and pay the bill.. Welcome to the price of ownership and airplanes where everything is one decimal point to the right of what it should cost... Quote
Mark Pavinich Posted March 18, 2017 Report Posted March 18, 2017 I have a 78J with the Bendix D3000 single drive --- I am in need of a p-lead / capacitor replacement. By any chance do you know and call supply a part number? Thank you. Quote
N201MKTurbo Posted March 18, 2017 Report Posted March 18, 2017 bendix_magneto_parts.pdf BendixMagnetoCapacitorValues.pdf BendixMagnetoRotorID.pdf bendixSB_magneto_operating.pdf Quote
Mark Pavinich Posted March 19, 2017 Report Posted March 19, 2017 (edited) 201MK thanks for the parts list. If I read it right, I will need part # ES10-382807. Yes, I do have the D4LN-300 mags. I hate to order the wrong stuff. Edited March 19, 2017 by Mark Pavinich Quote
carusoam Posted March 19, 2017 Report Posted March 19, 2017 (edited) Posta non grata.... or something like that. -a- Edited March 19, 2017 by carusoam Quote
N201MKTurbo Posted March 19, 2017 Report Posted March 19, 2017 Yes, that looks right. Our mags are part number: 10-682555-11 Quote
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