Mike C Posted January 1, 2023 Posted January 1, 2023 Speedometer dosen't work. Put a drill on the transmission end. Speedometer had movement, indicating that the cable was ok. Checked the Speedometer end of cable with the wheels moving. Cable was not spinning indicating problem in the transmission. Removed the cover and the worm gear on the shaft appeared not to be centered , I was able to move it a bit with my finger but did not want to force it.. Question is should the worm gear be in the cente of the hole? 😊 Thanks in advance for any help. Quote
cny first gen 71 Posted January 2, 2023 Posted January 2, 2023 I belive there is a little clip that holds the gear on the shaft. If you pull the tail shaft off you should be able to see what's wrong. That is from memory of many years ago. 3 Quote
Leghome Posted January 2, 2023 Posted January 2, 2023 The tail shaft should come off by taking the four bolts out of it and slide off the rear of the tranny. At least that is how my 700r4 is, A lot easier than I ever thought it would be 2 Quote
Mike C Posted January 17, 2023 Author Posted January 17, 2023 Thanks guys took me a while to get to the job. Missing the clip that keeps the gear from sliding along the shaft. Now the search begins to find one. It's for a TH400. 2 Quote
1970mcss Posted January 17, 2023 Posted January 17, 2023 It shouldn't be hard to find. I sold a bunch of those back in the day. Maybe check a gmc dealer they may still have one in stock 1 Quote
1970mcss Posted January 17, 2023 Posted January 17, 2023 The part number is 6261781. Amazon shows one but they want 9.00. Checked ebay and they show one 2.95 plus shipping. Like I posted a local dealer might have one 1 Quote
Mike C Posted January 17, 2023 Author Posted January 17, 2023 Thanks for the info. The clip for a TH400 is a little bit different than the one for a TH350 transmission. The mounting slot in the drive gear itself is also different. I'm waiting for a call back from the local transmission repair shop in case they have one. Quote
Mike C Posted January 19, 2023 Author Posted January 19, 2023 On 1/17/2023 at 2:56 PM, Mike C said: Thanks for the info. The clip for a TH400 is a little bit different than the one for a TH350 transmission. The mounting slot in the drive gear itself is also different. I'm waiting for a call back from the local transmission repair shop in case they have one. Found the clip. Talked to a guy that knew a guy that knew a guy. Turns out he builds high performance engines/transmissions. Thanks everyone ☺ 2 Quote
Dtret Posted January 20, 2023 Posted January 20, 2023 3 hours ago, Mike C said: Found the clip. Talked to a guy that knew a guy that knew a guy. Turns out he builds high performance engines/transmissions. Thanks everyone ☺ I think I know the same guy. Some guy told me about him. Quote
Mike C Posted January 20, 2023 Author Posted January 20, 2023 There's always gonna be a "a guy". Quote
Leghome Posted January 20, 2023 Posted January 20, 2023 My guy says he doesn't know the guy who the guy who knows but also said he knows not much about what he knows Quote
cbolt Posted January 20, 2023 Posted January 20, 2023 18 hours ago, Mike C said: There's always gonna be a "a guy". who knows a guy..... Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.