10. MODIFICATION PROCEDURE FOR M870 BRAKE (BENDIX) (Continued).
To prevent injury to eyes, wear safety goggles during all punching and drilling
(5) Drill a 3/16-inch to 3/8-inch pilot hole and enlarge to a 7/16-inch hole in main frame rail (2) at the four locations
marked. Have a helper apply lubrication during drilling.
If minor misalignment of new mounting bracket holes and frame holes occur, make
adjustments by elongation of mounting bracket holes. Do not alter frame holes.
(1) Install two new mounting brackets (1), PN 112472, inside main frame rails with short side against frame rails (2)
as shown. Aline hole of new mounting brackets with mating holes in mainframe as shown in Figure 2.
(2) Secure new mounting brackets (1) to main frame rails (2) using screws (3) PN 290964, flatwashers (4) PN
204235, lockwashers (5) PN 202983 and locknuts (6) 298476. Torque locknuts (6) as specified in torque table located as