Piper Aircraft Corporation Cherokee 140 PA-28-140, Service Manual

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PIPER CHEROKEE SERVICE MANUAL
III - INSPECTION 01/31/08
3K20
(27) WING AFT SPAR-TO-FUSELAGE ATTACHMENT HARDWARE 100 HOUR
INSPECTION
Each 100 hours time-in-service, inspect the aft wing spar-to-fuselage attachment hardware for
both the right and left wings, as follows:
NOTE: Perform the following with weight on wheels (i.e. - not on jacks).
(a) Remove the lower wing-to-fuselage fairing in the area of the wing aft spar.
(b) Lower the flaps to gain access to the head of the wing-to-fuselage attachment bolt.
(c) Check the bolt for tightness in the fittings.
1 If bolt is tight:
a
Ensure that the washer(s) are in place on the bolt and ensure the bolts are
torqued as specified in Section IV, Figure 4-2, Sketch B.
b Re-install the fairings and make a log book entry indicating completion of this
inspection.
2 If the bolt is loose:
a
Remove the bolt and check the holes in the fittings for size and make sure no
out-of-round condition exists outside of allowable limits. The specified hole size
for each fitting is 0.3745 - 0.3765 inch diameter.
b If the holes meet the requirements specified above, check the gap between the
fittings.
1) If gap is below 0.032 inches, it is acceptable to install a replacement nut
P/N 404-532 (MS21042-6), bolt P/N 402-915 (NAS464P6LA6), and
washers P/N’s 690-629 (NAS1149F0663P) and P/N 690-620
(NAS1149F0632P) and torque as specified in Section IV, Figure 4-2,
Sketch B. Ensure that 1
½ threads of the bolt protrude from the nut.
2) If the gap is above 0.032 inches, install a thick or thin washer (or any
combination) as necessary to fill the gap, as described in Section IV, Figure
4-2, Sketch B, prior to installation of the nut/bolt combination above.
NOTE: If the gap (before shimming with washers) exceeds 0.15 inches,
contact Piper factory Technical Support through your Piper Dealer
for further instructions.
c If the holes do not meet the requirements specified above, install Piper Kit No.
767-383.
d Re-install the fairings and make a log book entry documenting completion of
this inspection.