Shop/Category/Fig. 4 — Engine: Crankcases, Crankcase Breather, Tachometer Drive/Norton Main Bearing Oil Seal
Details
| Diagram | Fig. 4 — Engine: Crankcases, Crankcase Breather, Tachometer Drive · ref 6 |
| Subsystem | engine bottom |
| Listed in parts books | 1971–1973 |
Norton Main Bearing Oil Seal
Main bearing oil seal for the engine crankcase area, catalog listed 1971-1973.
PN · NMT2187
NMT2187 is a main bearing oil seal, listed in the crankcase sections of the engine parts books alongside the crankcase breather and tachometer drive. It's a sealing part that lives at the crankshaft main bearing, keeping oil where it belongs as the crank spins.
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