Technical data

13773-001
20-60
Page 4 30 Nov 2000
Note: Nose Landing Gear Spindle Nut - After initial preload, retorque nose landing gear spindle nut
until 15-20 lbs of force is required at the axle to swivel the nose wheel. Grease spindle
threads.
Main Landing Wheel Nut - After initial preload, retorque main landing wheel nut until side
play is eliminated.
Specific Torque Requirements
Item
Chapter/
Section
Reference
Inch Pounds Nm
Minimum Dry
Torque
Maximum Dry
Torque
Minimum Dry
Torque
Maximum Dry
Torque
Propeller mount-
ing nuts
61-10 840.0 960.0 92.4 105.6
Propeller mount-
ing bolts
61-10 264.0 264.0 29.0 29.0
Propeller governor
nuts
61-20 155 175 17.0 19.2
Spark plugs 72-00 300.0 360.0 33.9 40.7
Engine mount to
firewall bolts (1/4”)
71-20 75.0 100.0 8.5 11.3
Engine mount to
firewall bolts (1/2”)
71-20 456.0 480.0 50.1 52.8
Nose wheel axle
nut
32-20
Preload 150
Final 20
Preload 150
Final 40
Preload 17.0
Final 2.3
Preload 17.0
Final 4.5
Main landing gear
upper attach fitting
to rib fitting nuts
32-10 25 50 2.82 5.65
Main landing gear
fitting to canted rib
clamp bolts
32-10 160 190 18.1 21.5
Main wing attach-
ment bolts
57-10 400 500 45.2 56.5
Main wing span-
ner nuts
57-10 1200 1400 135.6 158.2
Brass exhaust nuts 78-10 100 110 11.0 12.1
Nose landing gear
aft mounting bolts
32-20 480 690 52.8 75.9
Engine mount bolts
(1/2 inch)
71-20 468 480 51.5 52.8