Johnson CD-14 Frozen Pinion Gear-Shock Absorber

Home Forum Ask A Member Johnson CD-14 Frozen Pinion Gear-Shock Absorber

Viewing 15 posts - 31 through 45 (of 45 total)
  • Avatar
    James Tapscott

    US Member - 1 Year
    Replies: 12
    Topics: 1
    #192837

    Thanks Don. I’m in Wilton,Ct. I have a welder i can call. Shock absorber doesn’t budge. i dont have a press so I need to get a member to look at it or replace it. See pics. How do it get the Yankee chapter event schedule?

    WIN_20200122_20_38_55_Pro

    WIN_20200122_20_13_51_Pro

    • This reply was modified 2 months, 2 weeks ago by MumblesMumbles.
    Attachments:
    Mumbles
    Mumbles

    Canada Member - 2 Years
    Replies: 4394
    Topics: 431
    #192872

    If you’re going to beat it down to size, make sure you use at least a 2lb hammer as they do take some effort to move. Another way is to squeeze it in a vice if a press isn’t handy.

    If welding or brazing the shock together, care has to be taken to keep the two pieces aligned while doing the job. The driveshaft fits into a pocket inside the bottom half and if it can’t drop into this pocket, the driveshaft will be a bit proud and you may have trouble replacing the powerhead.

    Avatar
    fleetwin

    US Member - 2 Years
    Replies: 2942
    Topics: 38
    #192964

    OK, well your welder buddy can clean up that freeze crack. The driveshaft/bushing show little damage, if any, from rubbing, so no problem there. I’m sure you can find a machine shop that will press that driveshaft back down to the original height for little cost. Just be sure to have a look inside afterwards to make sure the shock spring isn’t actually broken….
    Before you go too far with this project, I’m hoping you have evaluated the rest of the engine…Compression, ignition, fuel system. You surely don’t want to get the thing back together only to discover the engine has pitched a connecting rod or has low compression in one or both cylinders….
    I will ask Gary if the 2020 meet schedule is out yet… There will be an on water meet later in the spring in the Hartford area, and the major on water meet will be held in Shelton in early September…Don

    Avatar
    James Tapscott

    US Member - 1 Year
    Replies: 12
    Topics: 1
    #193001

    Thanks Don,
    I put it on the basement floor and held it with pliers and smashed it several times with a mallet and it squashed 👍. But to inspect the spring how do I get it apart? Twist or? And what does the pin on the side do?
    Rest of engine I think is fine. It last ran 3 years ago. Started well.
    Gary got back to me. Added me to the mailing list. The swap in Rocky Hill is next for me. Hope to have it running by then. Need to order gaskets etc now and call welder.
    Thanks
    Jim

    Avatar
    James Tapscott

    US Member - 1 Year
    Replies: 12
    Topics: 1
    #195243

    Ok, crack in skeg is welded. He did a beautiful job. All gaskets and O-rings have arrived. Also got 3M 847 Gasket Sealing Compound, Triple Guard Grease and Loctite. I saw in a really great new YouTube video by Ben Ditmar, he recommends using BRP Gasket Sealing Compound. How does that differ from the 3M 847? Should I get that too? Hopefully get this thing back together next weekend.
    Thanks,

    Jim

    frankr
    frankr

    US Member - 1 Year
    Replies: 4833
    Topics: 48
    #195266

    Gasket Sealiing Compound and 847 are entirely different products. 847 dries very quickly and sticky glue-like. Gasket compound dries only slightly and slowly and stays soft. Words chosen from my limited vocabulary.

    • This reply was modified 1 month, 2 weeks ago by frankrfrankr.
    phil
    phil

    US Member - 2 Years
    Replies: 119
    Topics: 18
    #195279

    3M 847 is used to seal metal to metal joints (often with spaghetti seal).. manuals call it “Type M” or “sealer 1000”

    OMC (BRP) 508235 Gasket sealing compound comes in a can with a brush — I’ve used Permatex “High-Tack” but FrankR says the OMC stuff is much easier to clean up after. Mercury has a “Perfect Seal” compound.

    http://www.omc-boats.org
    http://www.aerocraft-boats.org

    Avatar
    fleetwin

    US Member - 2 Years
    Replies: 2942
    Topics: 38
    #195281

    Gasket Sealiing Compound and 847 are entirely different products. 847 dries very quickly and sticky glue-like. Gasket compound dries only slightly and slowly and stays soft. Words chosen from my limited vocabulary.

    • This reply was modified 1 month, 2 weeks ago by frankrfrankr.

    I like your dictionary.. The 847 dries quickly, is tough to use, and is much stronger than the gasket sealer. The best use for the 847 is when gluing the spaghetti seal in place on the skeg. The spaghetti seal would just pop right back out of the grooves if you tried to use the gasket sealer. This is a very critical step indeed. Once glued in place, the spaghetti seal must be properly trimmed so it butts up against the prop shaft bushing and seals properly. Frank has posted pictures of this procedure in previous posts. The gasket sealer can be used under the skeg screw heads, on the upper bushing gasket, and the shift linkage pivot screw gasket.
    OK, so you have compressed the lower driveshaft, did you measure it? You are correct, there is no easy way to peak inside at that shock spring, and there is no way to take the driveshaft apart. Measure the lower driveshaft length and post your results. You could “dry fit” the lower driveshaft and upper bushing housing together prior to actual assembly, then check for some end lower driveshaft end play. If there is no end play, or the lower driveshaft binds when “dry fitted” together, it is still too long and probably needs to be replaced….
    To “dry fit” these items:
    Install the lower driveshaft into the upper gear housing. Then install the upper bushing, SS plate, and impeller housing, then snug up the three water pump screws. You don’t need to install the gasket for this test. Then install the key and pinion gear while the upper gear housing is inverted. Spin the pinion gear buy hand, it should spin freely, no binding on the upper housing. Now remove the pinion and key, then flip the gear housing right side up quickly, you should be able to hear a slight clunk as the lower driveshaft drops down slightly, indicated there is some end play…

    Avatar
    James Tapscott

    US Member - 1 Year
    Replies: 12
    Topics: 1
    #195311

    Thanks Frankr and Phil. shock absorber is 6 11/16″ so I think I’m good. I’ll follow your dry fit instructions. Also,the pressure tester suggested in a previous reply to my thread is not available in my area, per Amazon. Strange. Does anyone have another brand/model? Maybe I’ll just go to Napa or AutoZone and see what they have.
    Jim

    Avatar
    crosbyman

    Canada Member - 1 Year
    Replies: 1453
    Topics: 182
    #195416

    https://www.amazon.ca/8milelake-Vacuum-Pressure-Bleeder-Bleeding/dp/B0727Z9B79/ref=sr_1_2_sspa?keywords=pressure+vacuum+pump&qid=1578867004&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzQTA1SllaTE5FMFlMJmVuY3J5cHRlZElkPUEwMjQwOTUyMTMxNVpEUUtZRUhXSiZlbmNyeXB0ZWRBZElkPUEwNTEzNjgyMjQ5VDU1WlYwUVVIQiZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

    unit turned out to be a real dud … after 5 minutes the handle was jamming half way and I ended up with total loss of pressure and vacum capabilities

    Purchased dec19 2019 I was out of warranty return time when I tested my ETEC 75HP gearcase last week 🙁

    Currently swapping mails with the supplier via AMAZON but I am not getting a good feeling on my $49 purchase If I end up high and dry with the supplier I will open it up (2 screws) and check out what is going on inside causing loss of pressure and.. vacum

    Grandpa always said… ” buy the best tools you can afford ” 🙁

    • This reply was modified 1 month, 2 weeks ago by Avatarcrosbyman.
    Avatar
    fleetwin

    US Member - 2 Years
    Replies: 2942
    Topics: 38
    #195426

    Don’t forget that the threaded tips that fit into the gearcase are sold separately by Stevens Instruments…You don’t have to buy the complete gage assembly. The price of the tips is very reasonable also…

    Avatar
    crosbyman

    Canada Member - 1 Year
    Replies: 1453
    Topics: 182
    #195428

    I picked up a suggested ” gearcase oil pump kit” at Canadian Tire which came with 2 fittings for 12$ cdn so I have an extra pump and spare tip for Mercs… I think

    the kit ” tips” hare jointed (flex a bit) and not suitable for pressure testing imho so I “glue sealed” the nipple& rim and JB welded the thing stiff …… it now works perfectly 🙂

    I have an alternative option to my crappy hand pump and will be testing next week after my .. winter chores are done 🙁

    Avatar
    James Tapscott

    US Member - 1 Year
    Replies: 12
    Topics: 1
    #195431

    Thanks Fleetwin, crosbyman. So on the Stevens Instrument site its called a “lube tap”. $16.25. Any other suggestions for a decent pressure pump that doesn’t cost a fortune? The Stevens pump is $140!!

    Avatar
    crosbyman

    Canada Member - 1 Year
    Replies: 1453
    Topics: 182
    #195472

    here is what I tried… to use but my unit was no good has explained above but….. it remains a cheaper alternative if I can get mine to work

    hopefully my supplier will ship me a good one !! it does pressure and vacum tests 🙂

    shop around I am in Canada

    Avatar
    fleetwin

    US Member - 2 Years
    Replies: 2942
    Topics: 38
    #195479

    Whatever pump you decide on must be able to read low pressure/vacuum readings accurately, 5-7PSI…

Viewing 15 posts - 31 through 45 (of 45 total)
  • You must be logged in to reply to this topic.