Stall Warning Device Washer Problem
Reilly,
Marty Santic had your same problem. In quotes below is what Marty said on 10-03-2008 in
http://www.vansairforce.com/community/showthread.php?t=34767.
"Page 16-02 Step 4: Ensure Hardware bag 2618 contains 16 AN-960-4 and 12 AN-960-4L washers. Looking at the 28 washers supplied to me they appear alike. All are 0.0225" to 0.024" thick. These are the small washers used to assemble the stall warning microswitch.
Specifications from Internet:
AN960-4 - #4 .125 x .312 x .032"
AN960-4L - #4 .125 x .312 x .016"
Elected to place 7 AN960-4 washers (I measured the one's sent to me at 0.023") between the outboard face of VA-195A and the micro-switch. This gave me a build-up of 0.161" compared to a buildup of 0.160" if the AN960-4 washers were per the MIL spec. I placed 3 of of the 0.023" AN960-4 washers between the micro-switch and the VA-195B keeper plate. With this arrangement the stall warning vane did not bind. After I installed the wing skin to check alignment, the vane was centered in the slot in the wing skin. (All of this was approved by Van's via a phone conversation.)"
Vans has changed these washers in the newer kits. I have kit 120457 and just finished installing my stall warning device. My bag 2618-1 contained the following washers:
20 NAS1149FN432P (repalces AN960-4)
12 NAS1149FN416P (replaces AN960-4L)
8 NAS1149FN832P (replaces AN960-8)
12 NAS1149F0363P (replaces AN960-10)
12 NAS1149F0332P (replaces AN960-10L)
My stall warner required six NAS1149FN432P (.032") washers in two locations between the VA-195A Mount Plate and the ES E22-50K Microswitch. It required four NAS1149FN416P (.016") washers in two locations between the microswitch and the VA-195B Keeper Plate. It also required two NAS1149FN832P (.032") washers between the VA-195A Mount Plate and the VA-196 Vane and one NAS1149FN washer between the Vane and the VA-195B Keeper Plate. I used one NAS1149FN416P (.016") washer under each of the MS21044N04 nuts and one NAS1149FN832P (.032") washer under the AN365-832 nut.
With these spacings, my stall warner was installed and checked out with the center left wing skin with no interferences.
Fred Carnes