Trumpet Arm Installation

Trumpet Arm Installation

Figure 285 Lubricate differential to trumpet arm o-ring with grease.

Figure 286 Carefully stretch and install o-ring.

Figure 287 Install (2) alignment pins 180° apart. IMPORTANT: Make sure brake pistons are properly aligned prior to installing trumpet arm in the next procedure. Reference figures 228-230. Figure 288 Install trumpet arm assembly. IMPORTANT: Trumpet arm should be pushed on by hand. The only resistance should be from the brake return springs as it makes contact with differential housing. When released the piston return springs should separate the housings slightly as shown in figure 289 indicating proper alignment.

Figure 289 Install (22) socket head screws and washers. Finger tighten several only until housings are in full contact with each other.

Figure 290 Remove (2) alignment pins and install socket head screws and washers.