Unimog starter motor

[niftysteve]

FYI: OM352 & OM366 flywheels have sweated on ring-gear.

 

With regards to starter motors a low voltage in the starting battery/s can cause the bendix pinion from flying out and engaging just resulting in the starter motor freely spinning then it flying out as soon as the ignition key is released as the armature slows causing a little “bang” as it engages and stops.

 

Other than that the phosphor bronze bearing can go on the carrier shaft for the bendix pinion causing misalignment of the pinion/ring-gear and the extra leverage imposed on the carrier shaft/armature takes out the armature end bearing the other side of the bendix causing repeated non starting (starter motor free wheeling) then eventually the misalignment stops the armature from turning.

 

Either way a rebuild of your starter with new bearings (3) new bendix, brushes, solenoid should be not more than ~£85 + VAT.

 

Really you could do with testing your battery/s (both for voltage and discharge capacity [A]) and earth/electrical connections for the starter.

 

i fitted a new starter a few years ago and the bronze part of the starter wore away so i changed it to a steel one and have had no more problems

[TopCut]

Thanks for all your help on hear I will be taking the starter motor off when I have a spare day and take a look inside and see what is going on.