V70 2.4 L5-2.4L VIN 61 B5244S (2001)
Band Apply Servo: All Technical Service Bulletins
A/T - 2-3 Upshift Flare/Harshness
NO: 43-37
DATE: 2-25-2003
MODEL: MY 2001-2002 S60, V70, V70 XC
SUBJECT: Shift Quality Issues due to B4 Servo Cover Failure, 2-3 upshift harshness or flare
CHASSIS: These chassis breaks are approximate:
S60: 062000-152000
V70: 116000-230000
V70 XC: 036000-067100
TRANSMISSION SERIAL NUMBER: The first 3 digits of the serial number on the affected transmissions will be between 01C (March 2001) and
01L (December 2001).
DESCRIPTION:
In the AW 55-50, brake number four (B4), is only applied in 3rd gear. The B4 is applied by a piston, which is covered by an aluminum cap. This cap has
a steel washer crimped to its inside surface, and a rubber cushion that sits between the cover and the washer.
If this washer breaks free from the crimps it will become concaved because of the B4 piston return spring pressure.
This loose washer can cause:
-
" 2-3 upshift flare / slip
-
" Harsh 2-3 upshifts
-
" 3-4 upshift flare / slip
-
" Harsh 4-3 downshifts
Replacing the broken B4 cover with a new one (PN 30651771) will remedy these symptoms.
SERVICE:
Location:
This is a top view of the transmission, as seen from under the hood. The B4 cover is located on the rear of the transmission. It faces towards the rear of
the car.
The B4 cover and the identification plate, which contains the serial number are highlighted in this drawing.
Preparation:
