Front

Fig. 1 Delco-Moraine series 3264M front disc brake caliper exploded view.:

A revised shoe and lining assembly is used on late production 1987 Cadillacs. The revised assembly includes a new lining material and extended shoes, eliminating the need for the stainless steel shoe abutment insulators (4), Fig. 1. This shoe and lining assembly can also be identified by the lining edge code: The original lining code is DM 121 FE, while the revised lining code is DM 128 FE. The revised shoe and lining assembly can be used on earlier models, however, the insulators must be removed and discarded.
1. Lubricate and install new bushings (6) in caliper mounting bracket, Fig. 1.
2. If new shoe and lining assemblies are being installed, compress piston into caliper bore, taking care not to damage piston.
3. Install inboard shoe, snapping shoe retainer spring into piston bore, and ensure shoe is flat against piston.
4. Install outboard shoe assembly, snapping shoe springs into holes in caliper, and ensure shoe is flat against caliper housing.