TimmyG Posted August 19, 2019 Report Share Posted August 19, 2019 Picked up this truck not running so was not able to drive it to test the transmission. Here's what I found when I pulled the trans drain plug....and the first bit of oil that drained out might have resembled metallic paint. The latter half of the oil looked like normal clean gear oil. How screwed should I expect it to be? Haha. 1 Quote Link to comment
bananahamuck Posted August 19, 2019 Report Share Posted August 19, 2019 I've seen worse on trannys that worked just fine but had high mileage between oil change... Fill it back up with tranny oil and if no noise,,, you're good . What part of Wa are you in--ish? . . 2 Quote Link to comment
datzenmike Posted August 19, 2019 Report Share Posted August 19, 2019 Normal, some wear is to be expected. Often just a black paste. I've pulled them out with ball bearings stuck to them, once a piece of bearing race and recently with a piece of oil gutter that went through the gears. Wipe it clean so you have a gauge for the next time it comes out. 2 Quote Link to comment
TimmyG Posted August 19, 2019 Author Report Share Posted August 19, 2019 Well now I feel better. I wasn't too worried, but this is the worst I've seen. I guess I've never really worked on a badly abused transmission, tho. My shifter doesn't snap back to the center when pushed into the 1-2 gate and released. Anything I can easily do about this? It snaps back to center when pushed into the 5-R gate and released. 1 Quote Link to comment
Crashtd420 Posted August 19, 2019 Report Share Posted August 19, 2019 28 minutes ago, TimmyG said: Well now I feel better. I wasn't too worried, but this is the worst I've seen. I guess I've never really worked on a badly abused transmission, tho. My shifter doesn't snap back to the center when pushed into the 1-2 gate and released. Anything I can easily do about this? It snaps back to center when pushed into the 5-R gate and released. I had that issue..... there is a bolt with a spring behind it..... Honest change the fluid and drive it, work the shifter back and forth and it should loosen up..... getting that bolt out while installed in the vehicle is kind of hard.... 1 Quote Link to comment
Crashtd420 Posted August 19, 2019 Report Share Posted August 19, 2019 Its located behind this .... 1 1 Quote Link to comment
TimmyG Posted August 19, 2019 Author Report Share Posted August 19, 2019 31 minutes ago, Crashtd420 said: Its located behind this .... Trans is currently sitting on my garage floor. Not in vehicle. So are you saying replace the spring or just clean out the area the spring sits? 1 Quote Link to comment
Crashtd420 Posted August 19, 2019 Report Share Posted August 19, 2019 1 minute ago, TimmyG said: Trans is currently sitting on my garage floor. Not in vehicle. So are you saying replace the spring or just clean out the area the spring sits? Oh even better.. yes remove that cap ( not really a bolt) There is a spring and a small piston thing inside ... use some wd40 or pb blast and let it soak in.... then just work the shift left and right and get it to move around..... I'm not sure if you can actually get the little piston out or not.... fyi I have no idea what any of those parts are actually called.... 1 Quote Link to comment
Crashtd420 Posted August 19, 2019 Report Share Posted August 19, 2019 Oh and the spring should be fine.... 1 1 Quote Link to comment
Crytek89 Posted August 20, 2019 Report Share Posted August 20, 2019 I just did the R.Diff+Trans in my 240sx and both looked worse than that and still shifts/drives relatively smoothly. I'm honestly scared to see what my 720 drain plugs look like though. 1 Quote Link to comment
Charlie69 Posted August 20, 2019 Report Share Posted August 20, 2019 Put Oil back in and drive it like you stole it! If it ain't broke don't fix it! It is a Datsun. 1 Quote Link to comment
datzenmike Posted August 20, 2019 Report Share Posted August 20, 2019 15 hours ago, TimmyG said: Well now I feel better. I wasn't too worried, but this is the worst I've seen. I guess I've never really worked on a badly abused transmission, tho. My shifter doesn't snap back to the center when pushed into the 1-2 gate and released. Anything I can easily do about this? It snaps back to center when pushed into the 5-R gate and released. I think you'll find that the shifter is meant to return to thee 3/4 position in the neutral gate. The 'plunger' cap has a raised ridge running horizontally and is spring loaded. The striking rod has a matching horizontal groove it fits into and only lines up in the 2/3 shifter position. Shifting right towards 5/R forces the plunger out of the groove and against the spring, shifting left towards 1/2 does the same thing. If you think about it, this helps the 2 to 3 shift miss going into first and 'points the way' into the next gear but resists going too far right into the 5th/R gate. True there is some slight resistance going into 5th but you know you are going there. Down shifting from 5th gives a left assist into the 3/4 gate and avoids reverse but slight resistance from going into the 1/2 gate. I think I shimmed mine with a small bolt to make the pull into the 3/4 gate slightly stronger. Push forwards out of 2nd and the shifter jumps to the right into the 3/4 gate. Pull out of 5th and it jumps left into the 3/4. 1 Quote Link to comment
TimmyG Posted August 20, 2019 Author Report Share Posted August 20, 2019 53 minutes ago, datzenmike said: I think you'll find that the shifter is meant to return to thee 3/4 position in the neutral gate. The 'plunger' cap has a raised ridge running horizontally and is spring loaded. The striking rod has a matching horizontal groove it fits into and only lines up in the 2/3 shifter position. Shifting right towards 5/R forces the plunger out of the groove and against the spring, shifting left towards 1/2 does the same thing. If you think about it, this helps the 2 to 3 shift miss going into first and 'points the way' into the next gear but resists going too far right into the 5th/R gate. True there is some slight resistance going into 5th but you know you are going there. Down shifting from 5th gives a left assist into the 3/4 gate and avoids reverse but slight resistance from going into the 1/2 gate. I think I shimmed mine with a small bolt to make the pull into the 3/4 gate slightly stronger. Push forwards out of 2nd and the shifter jumps to the right into the 3/4 gate. Pull out of 5th and it jumps left into the 3/4. Yeah, I was just saying it doesn't return to that position when you release it after pushing it left into the 1-2 gate neutral position. Feels worn out and would like to correct it. 1 Quote Link to comment
datzenmike Posted August 20, 2019 Report Share Posted August 20, 2019 I find the spring softer to return in the 1/2 than if in the 5th/R. I guess the 1/2 gets more use. The spring under the cap us quite strong but like I said I shimmed mine. If there is any wear on the button under the spring flipping it 180 would make the 5th/R a bit softer and the 1/2 firmer? Maybe. 2 Quote Link to comment
Stoffregen Motorsports Posted August 20, 2019 Report Share Posted August 20, 2019 17 hours ago, TimmyG said: Trans is currently sitting on my garage floor. Not in vehicle. So are you saying replace the spring or just clean out the area the spring sits? Yes, clean it out and then shim it up a bit. Small washers make good shims for increasing the pressure on the plunger. 2 Quote Link to comment
TimmyG Posted August 21, 2019 Author Report Share Posted August 21, 2019 Thanks everyone 1 Quote Link to comment
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