154. Use a drill and 7/32-inch (5.5mm) drill bit to enlarge the
holes to mount the engine.
155. Use a drill and 5/32-inch (4mm) drill bit to drill the hole
for the throttle pushrod in the fi rewall in the location
shown.
156. Attach the motor mount to the fi rewall using four M4
x 30 machine screws, four M4 lock nuts and eight M4
washers. Use a #2 Phillips screwdriver to tighten the
screws.
157. Fit the engine in the mounts and use a clamp to hold
it in position. Adjust the engine so the face of the drive
1
washer is 6
/
inches (159mm) forward of the fi rewall.
4
158. Use a pencil or felt-tipped pen to mark the locations for
the engine mounting screws on the engine mount.
P-47D Thunderbolt 20cc
154.
155.
25/32 inch (20mm)
9
1
/
inch (40mm)
16
156.
157.
158.
159. Remove the engine from the mounts. Use a drill and
5/32-inch (4mm) drill bit to drill the holes for the engine
mounting screws.
TIP: Remove the mounts and use a drill press when
drilling the holes in the engine mount to ensure the
mounting screws are straight and the motor mounts easily.
160. Fit the engine to the mounts. Slide an M4 washer on
each of the M4 x 30 machine screws, then into the holes
in the engine mounting lugs and into the mount.
161. Place an M4 washer on each screw, then a drop of
threadlock on each screw. Use a 5.5mm nut driver and
#2 Phillips screwdriver to install the M4 nuts that secure
the engine to the engine mount.
162. Use a drill and 5/32-inch (4mm) drill bit to drill the hole
for the throttle pushrod. Locate the hole near the mount
and protrusion from the fi rewall.
163. Use a hobby knife with a #11 blade to remove the area
in the sub-fi rewall to allow the lead for the spark plug to
exit the fuselage.
27
159.
160.
161.
162.
163.
EN