F 250 2WD Pickup V8-7.3L DSL (1990)
Fluid Line/Hose: All Technical Service Bulletins
A/T - E40D Delayed Initial Engagement
Article No.
92-1A-3
01/26/92
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TRANSMISSION - E40D - CONVERTER - EXCESSIVE FLUID DRAINBACK
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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:
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Park the vehicle on level ground.
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Allow the vehicle to sit for 30-60 minutes.
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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.
