A/T - Harsh 1-2 Upshift When Hot During Accerleration

Number 86-7-23 Date 6/86
Subject: 1986 THM 125C HARSH 1-2 UPSHIFT WHEN HOT DURING MEDIUM TO HARD ACCELERATION

REFER TO CHART BELOW

THM 125/125C TRANSAXLE I.D. NAMEPLATE YPSILANTI, MICHIGAN:

A 1986 THM 125C TRANSAXLE MAY EXPERIENCE A HARSH 1-2 UPSHIFT WHEN HOT DURING MEDIUM TO HARD THROTTLE ACCELERATION.. REFER TO FIGURE 1 FOR TRANSAXLE IDENTIFICATION INFORMATION AND TO CHART BELOW FOR MODELS.

ACCUMULATOR FEEDBACK ORIFICE:

WHEN SERVICING THIS CONDITION ON A THM 125C MADE BETWEEN THE SERIAL NUMBERS LISTED BELOW, REMOVE THE SPACER PLATE AND MEASURE THE DIAMETER OF THE 1-2 ACCUMULATOR FEEDBACK ORIFICE (REFER TO FIGURE 2 FOR LOCATION). IF THE HOLE IS 1.02 MM (0.040 INCH), REPLACE THE SPACER PLATE WITH THE INDICATED SERVICE SPACER PLATE, WHICH HAS A LARGER (3.18 MM/0.125 INCH) 1-2 ACCUMULATOR FEEDBACK ORIFICE.

SERIAL NUMBER SERIAL NUMBER SPACER PLATE
MODEL START END PART NUMBER

BAC 4482 6468 8660575
BDC 2137 2289 8660575
BPC 52519 57074 8660575
CAC 8054 8280 8660581
CBC 127346 128483 8660581
CCC 1914 2059 8660581
CMC 11283 11286 8660581
HXC 4215 4215 8660581
PHC 10949 12483 8660552
PKC 13015 14585 8660552
PNC 147386 162750 8660552
PRC 35775 39656 8660552
JSC 5642 6461 8660579

REFER TO THE APPROPRIATE SERVICE MANUAL FOR REMOVAL AND INSTALLATION PROCEDURES.