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  1. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    WOW @randeez & @rockola1971 DANG I just coughed up the dough and bought the tool. It's immediately apparent, visually, the original seal was not seated correctly. First I could see the inner seal WAS raised on one side / runout was quite a bit. I pulled it and used the tool to install the new...
  2. Matthew Jeschke

    1999 C5 Corvette no speedometer

    Posted on Corvette Forum. This has been one :mad::mad::mad::mad::mad::mad: of an issue. I think I found a fault. None of the ground pins are connected to chassis ground for the PCM. I went back into the Factory Service Manual. It says the PCM is grounded through S120 then to G120. I can only...
  3. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    @Donal not that one... There are two separate two way seals. One is on the outside of the case, this is the front output shaft seal. It's leaking. I ended up buying the tool and will just install it with the tool. I'd tried otherwise and it failed. My question left is, I assume the input shaft...
  4. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    @randeez thanks dude! So you made a tool out of PVC? My buddy said he thought the runout on the seal he installed was bad too. He revised his tool and gave it another shot, he made it out of PVC as well. Was going to go to ACE and see about buying some PVC to rig a driver up. Otherwise I see...
  5. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    I called USA Standard Gear tech support. The guy was nice but not too knowledgeable. I parted ways as he really didn't know what I was talking about. My question was this... When installing the front output shaft seal (a two way seal), should the outer seal be supported, inner, or do both have...
  6. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    Ah thanks, yeah I just double checked that. Might have been lighting. There's no gap on outer diameter of seal anywhere. I'm ordering a new one, especially since my friend's seal in the same kit just failed in same way. Are you pretty careful about using a tool? I think I'll build a tool out of...
  7. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    What made you think it wasn't driven in all the way? I know I mentioned that but you saw something too in the video? That said, a friend bought the exact same kit and had that exact same seal fail in the same way now :( I'm starting to think USA Standard Gear got in an order of defective seals...
  8. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    I have a little video here I really think the seal is defective. Damn thing leaks between the inner and outer part. I wrote USA standard gear to ask if they'll send me a new one. I don't know the part number for the specific seal, it was a bundle kit, kit is ZTBK351 In video, I mean brake...
  9. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    FNA Front output shaft seal has went out already I don't know if it's a defective seal or I installed it wrong. I don't think I installed wrong but it leaks between the two parts of the seal (two way seal). It leaks quite profusely once I get moving so I think it suddenly failed. Almost looks...
  10. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    Okay so I'm dumb. I only looked at pictures in factory service manual when I rebuilt my case. I didn't read the instructions. Somebody pointed out to me that the chain should be oriented in the same way it was taken out. Is that a big deal? I know I oriented the gears in same way I just didn't...
  11. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    So I tore down my core NP246 that I pulled off. It had a clunk. It would clunk on transmission shift from 1st to second when I accelerated very lightly in 2HI. I had suspected the transmission was doing it, but when I installed the rebuilt transfer case it went away. I didn't find anything in...
  12. Matthew Jeschke

    1999 C5 Corvette no speedometer

    I think at this point my case would be greatly improved if there was a VSS signal line in the passenger footwell I could probe. Then I'd just put it all back together and probe that line while driving with my oscope. Otherwise, I hate to take the dash apart :/ I know the gromet is there on the...
  13. Matthew Jeschke

    Build is Finished!

    That is sweet... I built up an LQ9 and 4L60E in my setup. Pulls hard but doesn't really accelerate like I thought it would. Will go up about any road though with ease... curious how yours pulls. Have you dyno tested?
  14. Matthew Jeschke

    Frame wax coating

    I use a 3M undercoating product. Is very similar to what is on my frame from factory, maybe even the same... Before I do that though I also got with rust converter and or rustoleum (industrial paint).
  15. Matthew Jeschke

    Move Transfer Case encoder motor to 2wd???

    I got it all put back together. I've never played with Tcase / neutral setting. What is that for? Towing the vehicle? What happens if you have TX case in neutral then put the transmission in drive... Does the transmission output then free spin like you'd think? I know is a bit of a dumb...
  16. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    And your help! Everybody wants to use that dumb tool for a gazillion dollars to spec the clutch stack spacer. I'd have been sunk if you'd not have pointed out to just measure them by hand. Maybe the only time your really need that tool is if you have a new clutch drum?
  17. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    haha, thanks for the tip... I cycled all the modes, then each one a little blip of the throttle. Drove one mile. It works like a CHAMP! I'll put it in 2hi and drive about 10 miles. I do notice the motor is under a bigger load. I'm assuming that 4wd is partly engaged. However, tires don't bind...
  18. Matthew Jeschke

    Pulling off the Perfect NP246 Transfer Case Rebuild

    My slow a$$ is finally getting the TX case put in. Learning LOTS about messing up encoder motors! Took encoder apart as was clocked wrong *sigh* Long story short, I'm 9/10ths installed. I noticed, probably should have made note earlier too, that the front output is TIGHT. Specifically when in...
  19. Matthew Jeschke

    Move Transfer Case encoder motor to 2wd???

    Couldn't get the cover off. Saw a few videos with that style encoder motor, mine is slightly different. It's GLUED like a SOB. I tried like hell to separate the case halves where the encoder is and couldn't do it. However, I got the cover off the motor, took the motor off and spun the shaft...
  20. Matthew Jeschke

    Move Transfer Case encoder motor to 2wd???

    I pulled my TX case. When I pulled it, I had it in 4HI. After cycling power to vehicle w/o encoder motor on the computer went to 2HI mode. Now if I turn the TX case to 4HI position then install the encoder motor, the computer thinks it's in 2HI, when the transfer case is actually in 4HI. I am...
  21. Matthew Jeschke

    Side post terminal issues

    I second @Fless you may have issues drawing enough current with that positive terminal not making contact with side of battery. Either way, it's also going to come loose on you and constantly be a problem. You can buy the terminal bolt at the parts store. I don't know what it's called but they...
  22. Matthew Jeschke

    New water pump and fan clutch? SOLVED

    I have 260,000 miles with original clutch hub. I noticed off road that my transmission got a bit hot... still well under 200F but I didn't like what I saw. The guy riding with me built these trucks for a living (retired from GM assembly line). He suspected the clutch hub as you could never hear...
  23. Matthew Jeschke

    1999 C5 Corvette no speedometer

    Great tip! Wouldn't be a bad idea to add a diagnostic connector in the cabin when I find the wire under the dash in. I'm hoping it runs through the electrical center... Seems that I diagnose this further, the PCM runs serial data (with vehicle speed in the data stream) and a standard vehicle...
  24. Matthew Jeschke

    1999 C5 Corvette no speedometer

    Thanks @exp500 I have a miniature scope. Would be perfect If I could find out how to tap the line in the footwell.
  25. Matthew Jeschke

    1999 C5 Corvette no speedometer

    It's official I'm stupid. Those are TWO separate connectors. I thought they were two sides of same connector. Still any tips to diagnose Vehicle Speed Signal are greatly appreciated.

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