White RZ disassembly

[RDnuTZ]

Thank God for the sprocket tooI bought from Rick Brett 20 years ago. Sprocket, hardware and the spacer behind it bagged and tagged.

I usually try to loosen the sprocket nut with either very long combination wrench or impact while chain still attached on the bike. Unfortunately, I don't always remember and a tool like that would indeed come in handy 

[Kawtriplefreak]

Today's progress in no particular order as I am at the mercy of the image program...

[Kawtriplefreak]

Please note the odd brass sleeve over the shift shaft in the 5th photo from the top. I have no idea why it is there unless it it in addition to or in lieu of the C-clip retainer that I am not certain is installed as I haven't gotten there yet. I plugged the counter shaft hole with a socket to keep dirt out of the case during the initial heavy cleaning of the cases in the parts washer. Left the cases in the parts washer over night with all the little webs filled up for a final soak. All that's left now is to get all the case bolts and nuts out and off and split the cases. Everything is bagged and tagged and  all the spacers and bushings and washers are zip tied in the order they came off.

[Kawtriplefreak]

I also did a little frame and swingarm scrubbing with a nylon brush and WD40.

[Kawtriplefreak]

 

What is the little L-shaped bracket oriented left to right in the middle of the bottom case? I assume it is something to do with some long gone catalytic converter mounting?

[Kawtriplefreak]

Power valves removed and scrubbed.

Apparently at some point the retainer for the RH power valve broke and departed the aircraft uncommanded. Note the difference between it and the intact LH retainer.

And I will be ordering bushing kits as well. The RH has considerable slop and is visibly oblong. The LH much less. I would guess the broken retainer is the culprit.

[Kawtriplefreak]

LH cylinder scrubbed and plugged.

15 minutes in the glass bead blaster

Another view

Another view

Done!

RH before

And after

Another view

Ready to pack for shipment to SC for boring

[m in sc]

all clean and ready to rock. 

[Kawtriplefreak]

https://yambits.co.uk/rz350l-gasket-set-full-p-13435.html

What are the 4 little o-rings for in this gasket set?

[Kawtriplefreak]

I figured it out with help. Generic power valve o-rings.

[Kawtriplefreak]

My 1st time ever splitting the cases on a Yamaha twin. It came apart pretty easy. The LH crank big end rod bearing is seized and the main bearing just inboard of the LH rod is crunchy on rotation. Noting came apart though. I don't think the cases had ever been apart before.


I got a 2x4 and numbered it to match the upper case bolts that are numbered on the case as they are all different lengths.I drilled some holes and threaded them in. The service manual says the case nuts and bolts are to be tightened in sequence on reassembly.

[m in sc]

timmy finally got his cherry popped. late bloomer. 

[Kawtriplefreak]

  

[Kawtriplefreak]

Just placed an order with Yambits for all the hard parts for the refurb. Power valve bushing kit, transmission bearings, etc... The plan is to get the top case and head bead blasted this week and get the cylinders and head boxed up and sent to SC for the machine work and timecerts in the plug holes. My new Vitos crank and seals kit arrived yesterday.

[85RZwade]

The fun part is coming