Starting System: Description and Operation

The Delco-Remy starter, Figs. 1 through 4, has the solenoid shift lever mechanism and the solenoid plunger enclosed in the drive housing to protect them from exposure to road dirt, icing conditions and splash. They have an extruded field frame and an overrunning clutch type drive. The overrunning clutch is operated by a solenoid switch mounted to a flange on the drive housing. The diesel starters, 25MT and 27MT, have a center bearing.
The solenoid, Fig. 5, is attached to the drive end housing by two screws. The cover can be removed to inspect the contacts and contact disc, but the switch is serviced as an assembly only.
Most motors of this type have graphite and oil impregnated bronze bearings which ordinarily require no added lubrication except at time of overhaul when a few drops of light engine oil should be placed on each bearing before reassembly.






Fig. 1 Delco Remy 5MT & 10MT standard duty starter. 1984 shown, others similar






Fig. 2 Disassembled view of Delco-Remy 5MT series starting motor






Fig. 3 Disassembled view of 10MT series starting motor (Typical)






Fig. 4 Disassembled view of Delco-Remy 25MT & 27MT series starting motor






Fig. 5 Solenoid contact assembly