High Altitude Compensator - Modified
Category Applicable Model/s Subject Bulletin No. 012/854 1983-85 626 IDLE COMPENSATOR & Issued 7/1/85
HIGH ALTITUDE COMPENSATOR Revised 8/14/85
The revised section is indicated by an asterisk. Please replace the original Service Bulletin with the revised bulletin.
DESCRIPTION
The service parts to modify the idle compensator and modified high altitude compensator have been established in order to improve the driveability such as hesitation when starting up after heat soak.
PARTS INFORMATION
PART
DESCRIPTION
NUMBER
9934 10 475 Vacuum Tube
1700 13 945A Vacuum Tube Connector (T-joint)
8318 13 986 Orifice
* 8AG1 13 SBO High Altitude Compensator (HAC) and bracket
NOTE:
The modified high altitude compensator is applicable to the area where the altitude is higher than 2000 ft.
IDLE COMPENSATOR & HIGH ALTITUDE COMPENSATOR:
MODIFICATION PROCEDURE
1. Remove the air cleaner.
2. Remove and discard the green tubes which connect the idle compensator, thermosensor and inlet manifold.
3. Disconnect the black tube between the canister and the T-joint and discard it.
4. Cut the new vacuum tube in the proper lengths and install them together with the orifice and T-joint as shown in the illustration.
Idle Compensator & High Altitude Compensator:
NO. LENGTH POSITION TO BE INSTALLED
1 8.5 inch Thermosensor - Inlet manifold
2 10.0 inch Idle Compensator - T-joint
3 10.0 inch T-joint - T-joint
4 3.5 inch Canister - T-joint
Idle Compensator & High Altitude Compensator:
5. Reinstall the air cleaner.
6. Replace the high altitude compensator (HAC) and bracket with the modified one. (High altitude area only.)
NOTE:
Modified HAC can be identified by the blue mark as shown below.
WARRANTY INFORMATION
Customer Comment Code: 1H
Damage Code: 33
Causal Part No: 9934 10 475 (Vacuum Tube) Operation No. & Labor Hour: XX0063-R-X 0.5 Hr. (Idle compensator modification) 20480X-R-X 0.3 Hr. (High altitude compensator R & R)