"Patina" The 1973 CB175 Cafe Racer

[1sttimer]

Re: "Patina" The 1973 CB175 Cafe Racer

Honda twins of that era have the shift mechanism in the upper case half and they have to be assembled upside down.

Upside down is the right way

Sweet, man thanks. By no means did I mean to say that cxman told me I would have trouble by the way. He gave me the example of a completely different motor. It just got me thinking.

Thanks

 

[teazer]

https://www.google.com/webhp?sourceid=chrome-instant&rlz=1C1FLDB_enUS525US525&ion=1&espv=2&ie=UTF-8#q=self+aligning+washer+m8&tbm=shop

Thanks for that link. You may have just given me the solution to an issue I have encountered. Learn something new every day

 

[cxman]

ist timer

we need to discuss with you how to pry the cases apart this can be a pita and if you use screwdrivers and brutality the engine will leak forever

i have not done tons of the 175 but i prefer to use a spreader tool that uses a threaded rod to jack the cases apart

by tightening the bolts forcing the cases apart

then i use hardwood wedges

i am sure others with more experience with this motor can give you better suggestions just remember to ask

or damage can result

 

[1sttimer]

Re: "Patina" The 1973 CB175 Cafe Racer

ist timer

we need to discuss with you how to pry the cases apart this can be a pita and if you use screwdrivers and brutality the engine will leak forever

i have not done tons of the 175 but i prefer to use a spreader tool that uses a threaded rod to jack the cases apart

by tightening the bolts forcing the cases apart

then i use hardwood wedges

i am sure others with more experience with this motor can give you better suggestions just remember to ask

or damage can result

Hey man, yeah I know what you mean. I've been into the engine once. Into the bottom end. Believe it or not, all it took was some heat, and I pulled the cases apart by hand. I applied opposing forces in the opening where the drive sprocket is. It popped right open. However, that was the problem. Everything violently pulled open and forks/springs came out of their place before I could tell where they came from.

I'm trying to avoid that this time, so being gentle sounds like the way to go. I agree.

 

[xb33bsa]

UPSIDE down it is like a 350 motor with the drum and forks up top ? pretty sure it is so, so you will assemble it with both trans shafts in upper case and drop the lower case on, after then shift shaft, pump, clutch etc

 

[acm177]

+1 upside down.

 

[teazer]

Fortunately the cases split easily as a rule. The dowels are not very tight fit so the two halves part reasonably easily.

If the cases are tight and you are 200% sure that all the bolts are out and the clutch is off, the trick is to smack the end of a shaft with a rubber mallet just hard enough to shock the cases apart. A short swift thump should be enough and will not harm or bend anything.

On your motor there may be a bolt hiding under the oil drain bolt, so check it out. I have never needed wedges or a spreader, but sometimes the cases just want to stick together and that's where that mallet comes in handy.

 

[simo]

+1 on the bolt hidden under the oil drain bolt
And a couple of light hammer taps is at most all that's needed.

 

[cxman]

i have had some xls that you almost need a press for lol

 

[1sttimer]

Re: "Patina" The 1973 CB175 Cafe Racer

Fortunately the cases split easily as a rule. The dowels are not very tight fit so the two halves part reasonably easily.

If the cases are tight and you are 200% sure that all the bolts are out and the clutch is off, the trick is to smack the end of a shaft with a rubber mallet just hard enough to shock the cases apart. A short swift thump should be enough and will not harm or bend anything.

On your motor there may be a bolt hiding under the oil drain bolt, so check it out. I have never needed wedges or a spreader, but sometimes the cases just want to stick together and that's where that mallet comes in handy.

It took me half of a day to find the hidden bolt under the plug last time . Thanks guys

 

[1sttimer]

Re: "Patina" The 1973 CB175 Cafe Racer

History question for you guys...

I've noticed that Honda uses lots of "special" tools to accomplish simple tasks. Like the spanner socket used to remove the oil filter cup. Couldn't they have made that thing a hex?

Besides some small amount of revenue from mechanic shops, why did they have to use special pieces like that? Why the added complexity?

 

[xb33bsa]

good question, but they wanted to keep the filter unit as small in diam as possible
having that type of nut allowed that ,as well as an easy way to have the locking tabs

 

[cxman]

and back when the bike was current you could buy that wrench from a lot of sources

here is one and there are others you can still get

http://www.amazon.com/gp/product/B000WJBLDE/ref=pd_lpo_sbs_dp_ss_1?pf_rd_p=1944687462&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B005QNTSPO&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1PW6CRRAV5NESKJ63AVN

 

[1sttimer]

Re: "Patina" The 1973 CB175 Cafe Racer

and back when the bike was current you could buy that wrench from a lot of sources

here is one and there are others you can still get

http://www.amazon.com/gp/product/B000WJBLDE/ref=pd_lpo_sbs_dp_ss_1?pf_rd_p=1944687462&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B005QNTSPO&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1PW6CRRAV5NESKJ63AVN

I bought that one yesterday

I lost the first one I bought. Cheap fix

 

[Texasstar]

Re: "Patina" The 1973 CB175 Cafe Racer

Tex,
Please don't repeat that. It is so easy to miss and remove body parts. Nothing is worth that. I know you know that, I'm just saying'....

never ever again...I need to start a thread on things not to do.


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[1sttimer]

never ever again...I need to start a thread on things not to do.


Sent from my iPhone using Tapatalk

In one way or another, I think Ichiban has that one accomplished

 

[Texasstar]

Re: "Patina" The 1973 CB175 Cafe Racer

In one way or another, I think Ichiban has that one accomplished

stupid is as stupid does


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[1sttimer]

Re: "Patina" The 1973 CB175 Cafe Racer

Again, right tool easy job. That oil filter spanner nut was on tight! Here is the right side disassembled. I need to remove the shift shaft to be able to do this, correct? Pull it all the way through?

Here is the culprit.

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[1sttimer]

Re: "Patina" The 1973 CB175 Cafe Racer

So to my question above, I think this is what is tripping me up. Look at #9 under section B.

Does that mean I keep the shift shaft and arm in place while I take the lower case off?

 

[Sonreir]

It's saying that this thing, here, needs to be removed before you can split them.