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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: spanky1205 on October 13, 2016, 03:47:25 pm

Title: TH700 Torque Converter Lock-up
Post by: spanky1205 on October 13, 2016, 03:47:25 pm

Were can I look to figure out how the torque converter lockup worked, from the factory, in the truck in my signature?  I am trying to understand how it is wired and how it is supposed to work when the truck left the factory specifically.    I realize this has been discussed at length all over the internet and I have done the searches, multiple times.  My problem is I am not very experienced and I do not know for sure if what I am reading is correct or actually applies to my truck.  There is no reason for anyone to re-write what has already been written thousands of times, I just need to know where to look and that what I am looking at actually applies to my truck in stock form.

Thanks for the help, it is appreciated,

Title: Re: TH700 Torque Converter Lock-up
Post by: bd on October 13, 2016, 04:20:48 pm

Refer to the 1987 Repair Manual pages 7A-2 (http://www.73-87chevytrucks.com/techinfo/7387CKMans//Service/ST_330_87_1987_Chevrolet_Light_Duty_Truck_Service_Manual.pdf#page=951), 7A-13 (http://www.73-87chevytrucks.com/techinfo/7387CKMans//Service/ST_330_87_1987_Chevrolet_Light_Duty_Truck_Service_Manual.pdf#page=962) and 7A-52 through 7A-62 (http://www.73-87chevytrucks.com/techinfo/7387CKMans//Service/ST_330_87_1987_Chevrolet_Light_Duty_Truck_Service_Manual.pdf#page=1001) for TCC overview, diagnosis and chassis specific wiring, respectively.

Refer to the 1987 Unit Repair Manual (http://www.73-87chevytrucks.com/techinfo/7387CKMans//Unit_Repair/ST_333_87_1987_Chevrolet_Light_Duty_Truck_Unit_Repair_Manual.pdf#page=599) for 700R-4 detailed repair and overhaul procedures.

Title: Re: TH700 Torque Converter Lock-up
Post by: spanky1205 on October 13, 2016, 09:30:10 pm

That is exactly what I was looking for.  Thank you very much.