Because my car was missing the starter, I bough one several years ago on ebay.
Although it is still looking in good shape I decided to take it apart to see if there are any problems inside.
The bush on the drive end side has some play (0.12mm) but it is not clear to me what is allowed. On the commutator end the play is only (0.05mm) Based on the original bush ID measurements it makes no sens to replace them, the difference is in the outside diameter of the axle. Because the axle, on the places where the bushes are located, looks normal and not worn, I will reused the available bushes.
| lucas number | Jaguar number | Length new | OD new | ID new | ID real | Axle real | Play |
|---|---|---|---|---|---|---|---|
| 270038 | 2812 | 1.328" | 1.003" | 0.877" | 0.8767" | 0.872" | 0.0047" |
| LB361 | 33.731mm | 25.476mm | 22.276mm | 22.27mm | 22.15mm | 0.12mm | |
| 255491 | 8370 | 0.750" | 0.752" | 0.626" | 0.626" | 0.624" | 0.002" |
| LB360 | 19.05mm | 19.101mm | 15.900mm | 15.90mm | 15.85mm | 0.05mm |
Parts needed to rebuild the starter
As can be seen on the above picture the armature just looks like new. The length of the brushes are still in good condition with a length of 0,51″ or 13.0mm. (a new one measures 0.53″ or 13.5mm)
After everything has been put together again. the starter motor has been mounted onto the bell housing.