1971 CB175 Rocker arm removal?
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Thread: 1971 CB175 Rocker arm removal?

  1. #1
    PRN
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    1971 CB175 Rocker arm removal?

    I have been working off an on on my daughters 1971 CB175 project bike. After many (8 months) months of trying to free up the two stuck pistons finally got success. Had them sized up to .5 and got them installed today. Now my focus is on the intake and exhaust ports. It is unclear to me how to remove the rocker arm pins? They are exposed but will not pul out. Is there a technique for doing this? I have attached some pictures. Just a note, I am working outside in 30 degree temp. If that makes a difference. Also would be interested in any comments on the overall shape of the other parts in the pictures

    Thanks Phillip
    Attached Thumbnails Attached Thumbnails 1971 CB175 Rocker arm removal?-img_1022.jpg   1971 CB175 Rocker arm removal?-img_1024.jpg   1971 CB175 Rocker arm removal?-img_1025.jpg   1971 CB175 Rocker arm removal?-img_1027.jpg   1971 CB175 Rocker arm removal?-img_1028.jpg  

    1971 CB175 Rocker arm removal?-img_1029.jpg  
    Phillip

    2007 Yamaha Silverado
    1973 Honda CB500 (restoring for myself)
    1976 Honda CB550 (restoring with my son)
    1971 Honda CB175 (restoring with my daughter)

  2. #2
    Senior Member Gixxer-18's Avatar
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    The rocker arms have a thread in them. Screw in an M6 case screw and pull them out! Simples.
    It does look rusty, but that's part of the fun!
    Nigel.
    2002 GSXR1000
    2005 R6
    2003 R6
    2003 Hyosung Comet 125
    1983 CB250RS
    1979 T140E Bonneville
    1976 CB360
    1975 T160 Trident
    1974 CL450
    1972 CB500/Four K1
    1972 CB350/Four K1
    1972 A100 Suzuki
    1957 T100

  3. #3
    PRN
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    Thanks Nigel for the tip. I did take a look at that earlier today thinking that would make it so easy. However, the inside of the rods appear to not have any threads. Feels smooth when a ran a small screwdriver inside. I tried a side cover bolt just now and it was too small. Will very that I use a M6 bolt tomorrow.
    Phillip

    2007 Yamaha Silverado
    1973 Honda CB500 (restoring for myself)
    1976 Honda CB550 (restoring with my son)
    1971 Honda CB175 (restoring with my daughter)

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  5. #4
    PRN
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    I confirmed that there are no threads. I ended up making a tool out of a nail that extends through the shaft and pull the shaft out. Worked very well. I have attached a picture of the tool.
    Attached Thumbnails Attached Thumbnails 1971 CB175 Rocker arm removal?-img_1030.jpg  
    Bill H likes this.
    Phillip

    2007 Yamaha Silverado
    1973 Honda CB500 (restoring for myself)
    1976 Honda CB550 (restoring with my son)
    1971 Honda CB175 (restoring with my daughter)

  6. #5
    Junior Member mtn_'s Avatar
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    Yep they should be able to pull out. No threads. Moving the camshaft can help free them up from the rocker arms too. Looks like a good project, I would replace the contact points depending how they clean up. Not too expensive for a vital ignition timing piece. Keep us updated.
    mtn_

    1968 CL175 K0 project (long-term perfection)
    1969 CL175 K3 daily
    1970 CB175 K4 daily
    1972 CL175 K6 project (bore)
    1972 CB350 K4 project (frame)
    1969 CT70 K0 project (fuel/spark)

  7. #6
    Senior Member Simo's Avatar
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    Glad you fixed it, as far as threads go some 175 rocker pin sets have them some don't, I've pulled a pile of them and about a 1/4 have had a threaded internal
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