Article 14 - Delayed 1-2 and 2-3 Upshifts (C-4 Transmission)

TSB #1 - September 15, 1971
(1972 Torino/Montego)

A delayed 1-2 and 2-3 upshift condition on early built units can be corrected by replacing the vacuum diaphragm unit.

After verifying the condition, check the color code stripe on the vacuum diaphragm unit. If the stripe is either orange or white, replace the diaphragm unit with Part No. C4AZ-7A377-B identified by a green stripe. After installation, adjust the diaphragm so that the transmission line pressure reads 94 to 103 p.s.i. at 10 inches vacuum. Refer to the Shop Manual for replacement and adjustment procedures.

C4AZ-7A377-BVacuum Diaphragm UnitA

PRODUCTION CORRECTION: Approximately 7-30-71
Reimbursable within the provisions of the Warranty and Policy Manual.
Operation: SP 7-7377-A-71
Time: 0.9 hr.

DLR. CODING: Basic No. 7A377-Code 38