btw if op is inside the GC fixing up things may as well confirn the shock absorber has not stretched beyond 6”11/16 otherwise .
when i did mine i had a heck of a time closing up the GC and after 2-3 reseals I found mine had somehow streched and rubbed the underside of the wp enough to cause binding problems. Had it spot welded shut, filed the weld burs away and resealed the GC. Pressure tested fine after and… no more binding on the drive shaft
- Correct length: about 6 11/16″ (6.69″)
- If it stretches to ~6 3/4″ (6.75″) or more, it can start rubbing or binding in the housing.
- These shock couplers often stretch after the prop hits something; sometimes they can be pressed shorter again in a vise if not broken.
What the shock absorber does:
- It’s a spring coupler in the driveshaft that absorbs impact if the prop hits a rock or log.
- If it’s too long, the shaft can bind.
- If it’s welded solid, you lose that protection and risk damaging the gears so using a brass drive pin helps
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