Scott Bonnar 45 Teardown (8 - Rear Roller)
Тәжірибелік нұсқаулар және стиль
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It's finally time to crack open up that hulking mystery at the back of the machine: the rear roller.
Start by removing the bearing cups and bearings but be gentle with the pressed bearing cups (00:00:39).
The shaft clamps come off next by firstly loosening the lock nut and then backing out the single bolt (00:02:22). Make sure the bolt is well back to avoid damaging the shaft.
The roller halves can now be removed from the roller shaft (00:07:03). Inside each roller half you'll find three pawls (which aren't secured, so don't lose them!).
Next comes the ratchet box from each roller half (00:09:51). Start by backing out the three bolts securing the ratchet box to the roller drum itself. It's quite likely the ratchet box will be rusted to the drum. Go easy. Be gentle. I used a 3-in-1 penetrating oil in combination with WD-40 and eventually bit of rust converter (Ranex) to get these ones moving. My preferred approach involves using the two large holes at the opposite end of the drum to bang the ratchet box out, being sure to focus your efforts on the thicker centre portion of the ratchet box rather than the spokes. A puller setup may also work for you.
If your mower has a counterweight (14" and 20" machines), you'll need to free up the counterweight before having access to the back holes (00:10:44).
► In subsequent videos we'll be taking this machine back to bare metal before the rebuild. Watch all the teardown videos here: • Scott Bonnar 45 Teardown
► Check out the SB 45 walkthrough videos if you're new to cylinder mowers and Scott Bonnars: • Scott Bonnar 45 Walkth...
⚠️ Don't forget to disconnect your spark plug before starting work on your machine! ⚠️
#ScottBonnar #Teardown #RearRoller
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Additional Resources:
► Scott Bonnar Restorations FB Group: / 1801521490103765
► Scott Bonnar - Buy, Sell, Swap Australia FB marketplace / 1207116562722291
► Scott Bonnar Addicts FB Group: / 791569104336316
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About me and this channel: I'm Michael, a homeowner and aspiring lawn addict. I make these videos to share as much as I can, as best I can, from my recent experience rebuilding two Scott Bonnar 45 mowers. Although I'm a passionate wood worker and ex-IT guy, I have zero mechanical experience. I'm no expert on these subjects but I learn by sharing and it encourages me to grow a better lawn and build a better mower if I know you're watching!
© 2019 Michael Hanes. All rights reserved.
Пікірлер: 14
Cool video mate, nice seeing all the steps
@LoveLarn
4 жыл бұрын
YourPalsChrisAndAl glad you enjoyed it!
Great Video Mate a lot of New Bes need to see this to help them
@LoveLarn
4 жыл бұрын
01silky1 thanks mate!
Hi Mate I Watched this Months ago but just came back to refresh me Doing this Tomorrow
@LoveLarn
4 жыл бұрын
Good luck! Hope it goes well! Working on the reassembly vid now 😍
Love your vids dude! About to start my first resto so you’ll def be getting some more views on these vids haha. Any plans on more vids? Restoration vids? Post resto re-assembly vids?
@LoveLarn
4 жыл бұрын
Good on ya bro! You'll love it, great sense of accomplishment to get through one of these mowers (they're really not so hard). Lots more to come. Next and final vid in the teardown series is all about stripping and rust removal... should be up soon-ish. And have also started sorting through the rebuild footage for that series. Then the question as to do whether I do a groomer (TBD!)
@booobface
4 жыл бұрын
Love Larn Yes! I dare say every SB has rust so it will come in handy
@LoveLarn
4 жыл бұрын
@@booobface if you want to get notified when new vids drop, don't forget to hit the Subscribe button :) I'm also on FB and publish video news there as well: fb.me/LoveLarnAU
Hi mate. Just curious if you’ve ever had any issues removing the shaft bearing opposite to the sprocket end? I cannot for the life of me get it off. I’ve tried soaking it wd-40 over night and using a gear puller which has its limitations with the pressed housing.
@LoveLarn
3 жыл бұрын
Yep it's a tight one--in an awkward space! Try giving it a hit to move the bearing towards the centre of the shaft and then removing it. I've also used the weight of the roller half to pound it off (using little jolts if the other half isn't off yet)
Are you going in for a re-bush?
@LoveLarn
4 жыл бұрын
The bushes are one of the few things I didn't replace on this machine, mainly because they weren't really on my radar at the time and I didn't know how to get the old ones out or source replacements. These roller halves were a snug fit to the rear roller shaft so I think she'll last me another few years ;-)