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Think I dropped something plastic in front diff '96 4EAT
Posted 03 November 2012 - 08:47 PM
Then when I pulled the vinyl tube out of course the white plastic connector wasn't there ... I'm 95% sure it went into the front diff.
So I drained the oil again, and felt around through the drain plug hole, and even stuck a piece of copper wire in there to feel around, but couldn't feel it. So I jacked the front up, set the parking brake hard, put in the FWD fuse, started it up, and let it turn the front wheels for maybe 20 seconds, thinking that might make the plastic thing fall down to be accessible through the drain hole.
But no dice, no sign of it anywhere in the drain. So I put the plug back in, filled it back up, and went up and down the driveway a couple times. I didn't hear anything odd and it seemed ok...
So either this plastic thing isn't in the diff, or it is and as least yet hasn't caused a problem ...
Hm how should i proceed?
Posted 03 November 2012 - 09:09 PM
i think i might try pulling the dipstick and drain plug and shooting some compressed air down the dipstick hole to make sure it's not 'stuck up top' or something.
you could pull the axle and pull the axle stub out of the front diff- they are only retained by a circlip and pop out and pop back in. with that out, even both sides - you might have a chance of seeing it.
in the end it's plastic and one would think it won't hurt the gears as long as it can't get into bearings or compromise fluid flow to them.
Posted 04 November 2012 - 12:10 AM
Posted 04 November 2012 - 12:50 AM
Compressed air probably wouldn't hurt anything. Take the drain plug out and the air has two escape routes. You should really only need like 20-30 psi for an air nozzle anyway. A couple sweeps in the fill tube should get some turbulence going on in the diff and might knock it to somewhere that you can see it at least.
Posted 04 November 2012 - 02:10 AM
Ah blowing some air in there, that seems like a good idea to try to push it through.
I think I will let it go for now, since it's plastic it sounds like those big hard steel gears would probably crunch it for a snack if it gets in the way. If it were something metal I think I'd have to probably work harder to get it out.
I tried having someone turn the wheel while I looked in the drain hole but I didn't see or hear anything but I realized whatever gear I was looking at wasn't turning,
so I put the FWD fuse in and just let it spin the wheels for a few seconds itself, hoping it would dislodge or crunch it up if it were a problem but I still didn't see it. I'm pretty sure it didn't drop to the bottom because I think I'd of heard/felt it with the copper wire.
Posted 04 November 2012 - 08:50 AM
Posted 04 November 2012 - 11:16 AM
Posted 04 November 2012 - 11:28 AM
Hm that $15 USB boroscope is interesting. It doesn't look like it has the semi rigid style cable like a normal boroscope but for $15 it's hard to go wrong. Ah I'd probably stick it in there and get it stuck up in the gears somehow and when I pulled the cable out, the cable would come out and the camera part would get lodged in there. While it stares right at the plastic part that fell in haa.
Posted 04 November 2012 - 01:27 PM
yes. it's a driven gear that's intergrated into the front diff - and it's plastic. they do fail occasionally, symptom is your speedo gets jumpy and then quits working.
Ok great thanks. Would mine have a speedo gear in the diff?
Posted 05 November 2012 - 12:02 PM
Edited by avk, 05 November 2012 - 12:09 PM.
Posted 05 November 2012 - 12:06 PM
Posted 05 November 2012 - 06:22 PM
you should be fine.
i lost one of those red tubes that fit on the spray nozzle of WD40 inside the cylinder of a 61 chevy V8 once. at least i think i lost in the cylinder. i never found it. but the engine ran great so i didn't worry.
Posted 12 November 2012 - 08:19 PM
Posted 12 November 2012 - 08:54 PM
BUT i would drive it for about 50 to 75 miles and change the fluid..like others said make sure the "diffstick" is out when you drain it. If anything you have freash fluid and should have the remains of the plastic out (not that it would do any harm really...You could also pour fresh lube into diff when the drain plug is out to flush the bottom out..
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