Auxiliary Blower Motor - Operates On High Only

88ford23

^ AIR CONDITIONING - AUXILIARY BLOWER MOTOR OPERATES ON HIGH ONLY

^ HEATER - AUXILIARY BLOWER MOTOR OPERATES ON HIGH ONLY

Article No. 88-20-13

LIGHT TRUCK: 1985-88 ECONOLINE


ISSUE: An auxiliary blower motor that only operates in the high speed mode may be caused by an open thermal limiter on the auxiliary blower motor resistor. The current location of the resistor does not allow the thermal limiter to properly cool.

ACTION: Install a new blower motor resistor in a new location to achieve better cooling of the thermal limiter. Refer to the following service procedure for removal and installation instructions.

1. Remove the auxiliary "A/C-Heater" or "Heater" cover assembly.

2. Disconnect the blower motor resistor wiring connectors.

3. Remove the resistor and two (2) mounting clips from the resistor mounting posts.

FIGURE 7:

4. Cut out the template, Figure 7.

FIGURE 8:

5. Position the template on the plastic case as shown in Figure 8.

6. Scribe the plastic case to correctly locate the resistor opening and two (2) mounting screw holes.

7. Cut the resistor opening with a hot knife or a saw. Using a 5/32" drill bit, drill the two (2) new mounting screw holes.

8. Install the two (2) resistor mounting clips removed in Step 3 over the new mounting screw holes.

9. Position the new blower motor resistor, (E8UZ- 19A706-A) with the windings facing upward.

FIGURE 9:

10. Install the two (2) mounting screws, Figure 9.

NOTE: MAKE SURE THE BLOWER MOTOR RESISTOR COILS OR COIL TERMINALS ARE NOT TOUCHING THE PLASTIC CASE. ADJUST THE MOUNTING LOCATION IF NECESSARY.

11. Reconnect the blower motor resistor wiring connectors.

12. Make sure the auxiliary blower motor operates at each speed mode.

13. Reinstall the auxiliary "A/C-Heater" or "Heater" cover assembly.

PART NUMBER PART NAME CLASS

E8UZ-19A706-A Resistor-Blower Motor B


OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty Coverage
OPERATION: 882013A
TIME: 0.7 Hr.
DLR. CODING: Basic Part No. 19A706
Condition Code: 46