Hi Neil-
I’ve I’ve got those replacement screws and the steel locks (VS wire). Threads in pinion grip well but I’ll use locktite red. Using Loctite and the locks will hopefully hold the bolts. New bolts 4H1350 and locks 4H1351 new bolt/lock combo for clarification.

Question-the sleeve holes where the 4B7273 screw into the pinion, are not threaded, correct? The holes in my sleeve have thread ridges in them but none complete. Look like impact imprints...

Always helpful-thanks.
Bernie

"Neil" wrote:

Those 4B7273 cap screws have very little to hold on to even from brand new so if yours are sketchy at all, you could take a shot with the threadlock or or drill out to receive larger diameter bolts (might want to shave down the bolt heads to reduce the mass on them) or just get a replacement.

Thats why they went to the longer 4H1350 capscrews and 4H1351 locks instead.

Hi Bernie,
you are getting it done.
In the last few weeks I have removed the pinion assemblies from 2 x D311's and replaced the unit I rebuilt from both with new bearings, seals & etc.without drama using the method in the book and that I described--I too had my doubts for a minute or two but knew I had done this several times in the past--it is a Chinese puzzle to get the pinion and those pesky pinion retaining bolts aligned just so and then a slight turn as the unit goes in or out as needed. It is a fine line getting the correct orientation for success--holding mouth just so--lol.

Cheers,
Eddie B.

Piece by piece for me. Always a time and “know how” dueling it out. I need a couple more parts before I reassemble. It’ll give me some time to parts clean and bevel the clutch discs as squatch demonstrates. I didn’t realize you still wrenched on these boogers, albeit not surprised. Your reply’s never seem “rusty”.

Still Curious about the sleeve question above on if it is threaded or not where the cap screws thread the pinion-I’m thinking not, but if so I’ll need to build up or help-coil and retread.

Have fun!
Bernie

Bernie, the pinion sleeve is not threaded and you're just seeing the impact marks as you described. The bolts only pass through the sleeve and thread into the gear.

Opinion best left to experts-my pinion fear is not worn as severely as your photo. The little wear on mine is worn closer to the shaft insert end. On the sleeve I’m thinking if you use the retainer lock instead of the wire, the lock would cover the oval-seems like another reason the lock is better than the wire. For the cost of a replacement sleeve, I’d build up the oval and grind back to original. Especially if that’s the only issue with it.

Last question, is the wear on both possibly caused by holding the pinion engagement lever while engaging the main to starting engine?

Have fun-
Bernie

Updated post-figured out the reassembly.

Question is:
1. Wear on cutch ring dogs on steering clutch is apparent. How critical is wear. I estimate 1/32” on the initial contact corner to locking disc;
2. I have new pinion latches but they look bulky compared to my current set and mismatched. Has this been an issue for anyone else? Dry fit made them bind up.

Bernie