A/T - E40D Delayed Initial Engagement

9209ford01

Article No.
92-1A-3

01/26/92


^ TRANSMISSION - E40D - CONVERTER - EXCESSIVE FLUID DRAINBACK

^ TRANSMISSION - E40D - DELAYED INITIAL ENGAGEMENT


LIGHT TRUCK: 1989-90 BRONCO, E-150, E-250, E-350, F SUPER DUTY, F-150, F-250, F-350


ISSUE: A delayed initial engagement of 10-20 seconds may be experienced because of converter drainback. This condition is most noticeable in a vehicle that has been parked for an extended period of time.

ACTION: Check the drainback (fluid level) on the dipstick and, if necessary, install an in-line check valve in the cooler line going to the rear case fitting. Refer to the following procedure for service details.


1. Drive the vehicle for 30-60 minutes to attain normal operating temperature.

Figure 1:

2. Check the transmission fluid level per the instructions in the Owner Guide. Only add fluid if required, Figure 1.


3. Drive the vehicle through 8 to 10 cycles of 1/2 throttle, 1-2 upshifts to elevate transmission temperature. Then proceed as follows:

^ Park the vehicle on level ground.

^ Allow the vehicle to sit for 30-60 minutes.

^ Check and note fluid level on the dipstick with the engine OFF, in PARK.

4. Allow the vehicle to sit for a minimum of 24 hours.

Figure 2:

5. Check and note fluid level as described in Step # 3. If the fluid has risen 1" or more above the level in the first check, excessive converter drainback has occurred, Figure 2.

6. If excessive converter drainback has occurred, install an in-line check valve (FOTZ-7Dl74-A) in the cooler line going to the rear case fitting.


CHECK VALVE INSTALLATION

Figure 3:

1. Select the check valve location in the cooler-to-case rear fitting line, Figure 3.

CAUTION: IT IS MANDATORY THAT THE COOLER-TO-CASE LINE BE POSITIVELY IDENTIFIED OR A TRANSMISSION FAILURE WILL RESULT

2. Clean a section about three (3) inches long around the chosen location with "Scotchbrite", steel wool or sandpaper to remove all rust and dirt.

3. Cut the line at one end of the check valve location. Use a tubing cutter and file off any burrs or ragged edges.

4. Install check valve with the arrow pointing to the rear case fitting, Figure 3.

CAUTION: IF THE ARROW IS AIMED WRONG, THE TRANSMISSION WILL FAIL.

5. Tighten the tube nut to securely locate the check valve.

6. Hold the free end of the line alongside the check valve. Mark it so that, when cut, the end will seat completely in the check valve.

NOTE: IT IS BETTER FOR THE LINE TO BE SLIGHTLY LONG SO THAT THE CHECK VALVE WILL BE IN COMPRESSION. IF THE LINE IS CUT SHORT, IT WILL TEND TO PULL OUT OF THE CHECK VALVE.

7. Tighten the tube nuts and run the engine while checking for leaks.

8. Spray with solvent to remove residual oil from installation.

9. Drive the vehicle, warming the transmission up to normal operating temperature.


10. Check for leaks and tube tightness.

PART NUMBER PART NAME CLASS

FOTZ-7D174-A Check Valve Assy. B

OTHER APPLICABLE ARTICLES: 90-18-11
WARRANTY STATUS: Eligible Under Basic Warranty
Coverage, Powertrain
Warranty Coverage
OPERATION DESCRIPTION TIME
921A03A Install Check Valve & Road 0.7 Hr.
Test
DEALER CODING
BASIC PART NO. CONDITION CODE
7902 53
OASIS CODES: 503000, 510000