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  1. ratdude747

    MC-1 Drive Dog failure?

    Good news: the oil coming out is water free but looks like generic yellow/orange gear oil. Bad news is the u joints are bad and the upper case damage is worse than I thought: Both sides are cracked. There also is corrosion in the bell housing gasket area. Making a case and joint swap with...
  2. ratdude747

    MC-1 Drive Dog failure?

    Got it. Not as good cosmetically (lower unit has corrosion) under the paint) but no leaking u joint. Plan will be to swap my lower over... Maybe reseal the upper since I have the parts? Obviously I'll have to keep the case and gears together since I don't have a shim kit... Edit: maybe I want...
  3. ratdude747

    MC-1 Drive Dog failure?

    Got the cups pulled too. Lower one was loose (got stuck, but slide hammer popped it out). Upper one put up more of a fight, but I used a light amount of heat to get it out. That said... I was able to arrange a pickup tomorrow afternoon for the unit in Gary. Guy blew his engine last year and...
  4. ratdude747

    MC-1 Drive Dog failure?

    Got the bearings off. The trick for the big bearing (if using the Harbor Freight bearing splitter set) is to cut the cage and rollers off, then pull using the upper lip on the race. I also heated it with a poly torch but it wasn't all that warm by the time I actually pulled it. The cups dont'...
  5. ratdude747

    MC-1 Drive Dog failure?

    Got the seal out. Had to modify a harbor freight seal puller: Also got a bearing splitter for the vertical shaft. How does one remove the bearing cups from the case and cover? Slide hammer? Special tool? Edit- Bearing splitter too small for the large bearing (haven't tried the small)...
  6. ratdude747

    MC-1 Drive Dog failure?

    I showed the worst... but it's like that on several teeth on each gear. If I just need to replace bearings and knock that stubborn seal, then sure. I found another 888 drive to the north of me (Gary, IN 😬) for even cheaper. Worn skeg though.
  7. ratdude747

    MC-1 Drive Dog failure?

    You think my gears are still worth using? I don't recall a lot of gear noise... but the pitting is concerning. If it was just one pit (or a few in one spot), I'd think nothing of it (the cam in my truck was like that when I rebuilt said engine... still going strong). But several teeth on both...
  8. ratdude747

    MC-1 Drive Dog failure?

    My luck may be turning... digging on Facebook Marketplace, I found somebody with a supposedly good MC-1 that happens to be off an 888 like mine (different year due to different stickers, but whatever) for cheap (reduced for not selling in nearly a year). Even has a stock prop (but not likely the...
  9. ratdude747

    MC-1 Drive Dog failure?

    Having issues. First, I'm having no luck with the upper driveshaft seal. I've curled the metal but I can't get purchase, at least with the strike-cap screwdriver I've been using (the lower came out easy since I could use a socket to pop it out). Need to get a different tool that can catch more...
  10. ratdude747

    MC-1 Drive Dog failure?

    Got the drive apart... Funny, the part of the yoke that rides on the seal looks fine... Unless that rusty groove under the shine is the surface in question. Sleeve it? The gears have some very light pitting: Nothing massive... But still ok to use? The bearings feel great... Smooth as silk.
  11. ratdude747

    MC-1 Drive Dog failure?

    I may have some sitting... or is it emblem cement? In any case, nothing that one of the LAPS's wouldn't have...
  12. ratdude747

    MC-1 Drive Dog failure?

    Ah. So likewise, I'm not off my rocker for only doing the shift and exhaust bellows... honestly the shift may be OK but since I have the part in hand, I might as well? Per a chat with a previous operator (Brother-in-law of the previous owner who did a lot of the maintenance on it), this sort of...
  13. ratdude747

    Best "low effort" towable?

    Nope, as of yesterday, Airhead says parts for that tube are no longer available. This is on the back burner due to the boat having mechanical issues that'll has it off the water and my boating budget locked out. Unless I stumble upon a deal or something.
  14. ratdude747

    MC-1 Drive Dog failure?

    Coworker loaned me the gimbal tools. Pulled the bearing this evening. It clearly isn't original (as it's the later retainer style, not the original snap ring style). But it had been receiving grease from the zerk, so at least that part was working correctly. Did not remove the seal as I couldn't...
  15. ratdude747

    MC-1 Drive Dog failure?

    Doing more reading, apparently the older drives (Alpha 1 gen 1 and earlier) don't use crush sleeves or rolling torque and instead use 200ftlb on the nut? Is this accurate?
  16. ratdude747

    MC-1 Drive Dog failure?

    Add the gimbal bearing to the list... spins freely but is lightly crunchy. May explain the seal failure (and/or made the failure worse). I have a boating coworker who has the special tools for such (alignment bar and bearing puller) so I'm good there. As far as I can tell the drive shaft...
  17. ratdude747

    MC-1 Drive Dog failure?

    That's normal?!? Edit- duh- the foot drives the torx shaft in the lower unit, the seal's in the lower. So maybe just need to do upper case seals? Would that seal going bad explain all the oil?
  18. ratdude747

    MC-1 Drive Dog failure?

    This job just got a lot deeper. As soon as I broke the seal, oil started dripping out: Once removed, it was a water-oil mess everywhere: Tracing the oil, it leads up to the bottom of the input seal... so that's probably wasted: (The U-joint, on the other hand, feels good, not tight and...
  19. ratdude747

    Gauges recommendation

    Valid point... if the voltage is coming back to normal with just the volt gauge disconnected (other gauges still connected) and swinging from 0 to full system voltage, then that points to the fault being an internally shorted volt gauge or some other short that was corrected by disconnecting...
  20. ratdude747

    Best "low effort" towable?

    Yeah except both appear to be smaller single rider tubes... weight capacity no good. There wasn't a capacity listed on the race tube (other than suggesting a 2400lb rated tow line), but being a two-person tube, figured it'd be close enough to hold me (it didn't have issues other than the skin...
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