Section Il. DRILLING AND CLEANING PROCEDURES
Unless otherwise indicated, all holes should
be sight drilled and should be 1/2 inch
(1.3 cm) in diameter.
(1) Enlarge two holes C and D to 1/2 inch
(1.3 cm) in the bottom of each door. Holes B and E are
Figure 7-3. Drilling Cab Sills.
Drill a total of 10 holes in the windshield frame.
(1) Drill three holes A, one at the top of each
vertical channel. At a distance of 18 inches (45.7 cm)
to the left and the right of the center hole A, drill two
more holes A.
Figure 7-2. Drilling Cab Doors.
(2) Cut four n o t c h e s A in the bottom
weatherstrip of each door. Notches should coincide
with holes B, C, D, and E.
holes A, B, and C in each cab sill. Hole A is drilled 10
inches (25. 4 cm) forward of hole B. Hole C is drilled
10 inches (25.4 cm) to the rear of hole B.