Beretta L4-121 2.0L (1987)
Power Window Motor: All Technical Service Bulletins
Windows - Revised Front Door Motor From Regulator R&R
Number:
89-32-10
Section:
10
Date:
NOV., 1988
Subject:
FRONT DOOR WINDOW REGULATOR MOTOR REPLACEMENT
Model and Year:
1987-89 BERETTA, CORSICA WITH POWER WINDOWS
TO:
ALL CHEVROLET DEALERS
This bulletin describes a revised procedure to replace electric window lift motors from front window regulator mechanisms on 1987-89 Corsica/Beretta
styles in the following section of these service Manuals.
1987-88 Service Manual
-
Section 10, Page 5L-18
1989 Service Manual
-
Section 10, Page 10-5-20
FIGURE 1
1.
Remove regulator and motor from door and carefully inspect the assembly for presence of counterbalance spring. (Some regulators mostly Coupe
styles, use the counterbalance springs while most Sedan styles do not) see Figure 1.
IMPORTANT:
IF THE REGULATOR DOES HAVE A COUNTERBALANCE SPRING, CONTINUE TO FOLLOW THIS PROCEDURE. IF
COUNTERBALANCE SPRINGS ARE NOT PRESENT, PROCEED TO STEP 3.
CAUTION: STEP 2 MUST BE PERFORMED WHEN REGULATOR IS REMOVED FROM DOOR. THE REGULATOR LIFT ARM IS UNDER
TENSION FROM THE COUNTERBALANCE SPRING AND CAN CAUSE PERSONAL INJURY IF THE MOTOR IS REMOVED
WITHOUT LOCKING THE SECTOR GEAR IN POSITION.
2.
Drill a hole through the regulator sector gear and backplate (See Figure 1) and install a bolt and nut to lock sector gear in position. Do not drill
hole closer than 13 mm (1/2") to edge of sector gear or backplate.
3.
Using a 1/4" drill bit, drill out the ends of all 3 motor to regulator attaching rivets from the motor side of the assembly.
