High Altitude Conversion Package, Altitude Compensator

87chrysler5 Models


All 1985-1986 Ram 50 & Power Ram 50 With Gasoline Fueled Engines


Subject


High Altitude Conversion Package & Adjustment for Improved Engine Performance


Index


EMISSIONS


Date

February 10, 1986

No.


25-01-86


P-303-C
Packages are now available to accommodate a customer who wishes to convert his low altitude vehicle for improved high altitude (over 4,000 feet above sea level) engine performance.

Vehicles with the low altitude package transferred to service in high altitude areas may exhibit undesirable driveability. However, the installation of a high altitude conversion package is voluntary and at the customer's expense.


PARTS REQUIRED


For 2.0 Liter Vehicles

Compensator Kit PN MD 105795

Consists of:

1 Altitude Compensator PN MD026708
1 Hose Assembly PN MD026213
1 Bracket PN MD026212
2 Bolts - Bracket to Compensator PN MF241224
2 Bolts - Bracket to Reservoir PN MF243623

Must be ordered separately:

1 Vehicle Emission Control Information Update Label PN4275084


Continued . . .
For 2.6 Liter Vehicles

Compensator Kit PN MD105796

Consists of:

1 Altitude Compensator PN MD026725
1 Hose Assembly PN MD206213
1 Bracket PN MD026212
2 Bolts - Bracket to Compensator PN MF241224
2 Bolts - Bracket to Reservoir PN MF243623

Must be ordered separately:

1 Vehicle Emission Control Information PN 4275084
Update Label

FIGURE 1:

REPAIR PROCEDURE

To eliminate the above altitude related conditions, the basic ignition timing must be advanced an additional 5~. The correct timing specifications are shown in Figure 1. On vehicles not so equipped, an altitude compensator must be installed to prevent an overrich condition from occurring.

1. Following the procedure as outlined in the service manual, reset basic timing to the specifications as indicated below:

FIGURE 2:

2. Attach altitude compensator (PN MD026708 for 2.0 liter, or PN MD026725 for 2.6 liter) to the brake reservoir as indicated in Figure 2.

3. Install vacuum hose harness, PN MD026213, between the altitude compensator and the carburetor air horn. Be sure the hoses are securely clamped to prevent vacuum leaks. Vacuum leaks may cause a lean fuel condition, which will result in severe driveability-problems.

FIGURE 3:

4. Install Vehicle Emission Control Information Update Label, PN 4275084, as illustrated in Figure 3.
POLICY: Information only