T1000 L4-111 1.8L DSL (1983)
Shift Modulator: All Technical Service Bulletins
A/T - Delayed Engagement in 1st Gear
Number 83-T-52
Section 7 Date 08/83
Subject:
DELAYED ENGAGEMENT - 1982 AND 1983 THM 180-C TRANSMISSION
A - RINGS, GOVERNOR HUB SEAL
Some 1982 and 1983 THM 180-C transmissions may experience delayed engagement in first gear. This condition may be the governor hub seal rings
seized in their grooves (see illustration). When servicing any 1982 or 1983 THM 180-C transmission with a delayed engagement condition, refer to the
service procedure below.
SERVICE PROCEDURE
1.
Check engine vacuum using a vacuum gage to insure there is sufficient vacuum to the transmission. Refer to your Service Manual for
specifications and correct as required.
2.. Check the modulator to insure that it is the correct part number. Refer to the Parts Manual for specific part numbers.
3.
Check for freeness of the governor hub seal rings. The rings should rotate freely in the grooves.. If not, remove the rings, clean the grooves with
cleaning solvent, and inspect the governor hub ring grooves for nicks or burrs. Remove all burrs, if any are present. Replace the governor hub and
governor hub seal rings if necessary. Refer to your Parts Manual for specific part numbers.
4.
Check the band adjustment per specifications outlined in your Service Manual.
5.
Check the third speed clutch input sprag for wear. If the sprag is worn, refer to your Parts Manual and replace it.
