Altitude Compensator - Modified
Category 1AApplicable Model/s 1984 GLC
Subject SERVO DIAPHRAGM AND HIGH ALTITUDE
COMPENSATOR MODIFICATION
Bulletin No. 035/83
Issued 12/23/83
Revised 3/28/84
Since this service bulletin is a replacement of the previous one, the former category is used. Please discard the previous service bulletin and insert this bulletin into the binder instead of the previous one.
IDENTIFICATION MARKS:
DESCRIPTION
To improve idle stability and low speed driveability (around 2000 rpm) in high altitude areas, air conditioner servo diaphragm and high altitude compensator have been modified as follows.
1. The return spring in the servo diaphragm has been weakened.
2. The starting point of the high altitude compensator operation has been changed from 3608 ft to 2100 ft and the diameter of the orifice used for EGR compensation has been enlarged.
These modifications took place since the production date of November, 1983.
VIN OF PRODUCTION CHANGE
Sedan: JM1BD221 E0759911 November, 1983
3 Door Hatchback: JM1BD231 E0760602 November, 1983
5 Door Hatchback: JM1BD241 E0750333 November, 1983
PARTS INFORMATION
PART NUMBER
NEW OLD DESCRIPTION QTY INTERCHANGEABILITY
8325 13 950A 8325 13 950 Servo Diaphragm 1 NEW to OLD
E563 23 950 Servo Diaphragm* NEW to OLD
(For Service Parts Only)* 1
E563 20 480B E563 20 480A* High Attitude Compensator* 1 NEW to OLD
Note: The modified parts have an identification mark as shown below.