I see the rod and cap are machined for alignment purposes as is done on later motors. You’re probably aware, but it’s always a good idea to check and record for future reference which surfaces are lined up on each assembly before taking them apart. This step is really important on later motors using rods which have been fractured. Sometimes, if the rod/cap have four machined surfaces, only three of them will be in perfect alignment with one of them having a bit of overhang. Reassembling them with the same surfaces in alignment will ensure the inner bearing surfaces are perfectly aligned. Here’s where a sharp dental pick comes in handy.
