F 250 2WD Pickup V8-6.9L DSL (1985)
a.
Clean shaft and bearing area at rear of clutch.
b.
Mark black shaft and bearing race (small silver ring at base of shaft) with a yellow grease pencil).
c.
Hold clutch body down and hold fan.
d.
Turn clutch shaft hex nut at least 10 complete revolutions while observing bearing race.
e.
If the mark on bearing race has not moved relative to the mark on the shaft, the unit is okay.
f.
If not okay, install an Eaton fan clutch (E5TZ-8A616-C) and return the faulty unit to the Warranty Parts Return Center.
NOTE:
It is normal for fan clutch to engage on fully-loaded trucks, on long grades, and/or during very hot weather. See Shop Manual, Section
27-09 for removal and installation procedures. The cooling fan uses an increased amount of engine horsepower with fan clutch engaged.
This loss of power is unavoidable if fan clutch is working normally.
6.
Record any repairs or adjustments made in Steps 2 through 5 above in the comment section on Form FPS-8433C.
7.
Complete Step 7 and Steps 9 through 11 of the 6.9L Diesel Engine Diagnostic Guide, record on FPS-8433C. This includes correction of any
concerns found during these steps.
8.
Road test vehicle doing aminimum of four (4) in-gear, wide-open throttle, acceleration tests.
NOTE:
ALL ROAD TESTS MUST BE CONDUCTED IN ACCORDANCE WITH ALL STATE AND LOCAL LAWS, INCLUDING SPEED
LIMITS.
Do the in-gear WOT acceleration tests as follows using a second person to observe and time.
a.
Weigh vehicle with driver and observer onboard. (Retain scale ticket and attach copies to warranty claim and FPS-8433C.)
b.
Measure vehicle frontal area if vehicle is other than an empty standard pickup, van or Club Wagon. (Measure maximum vehicle width and
multiply times the maximum vehicle height on any truck equipped with an aftermarket second body, slide-incamper, box, topper, or anything
else that increases frontal area over and above the standard production vehicle. Record vehicle frontal area in the "Chassis Style" box on top
of FPS-8433C.
NOTE:
Vehicle performance decreases with increased frontal area. VEHICLE AND/OR TRAILER FRONTAL AREA GREATER THAN
60 SQ. FT. ARE NOT RECOMMENDED BY FORD AND WILL RESULT IN POOR VEHICLE PERFORMANCE.
c.
Check speedometer accuracy by driving and timing the truck over a measured mile. Refer to the Ford Truck Master Parts Catalog for proper
speedometer gears to use for various rear axle ratio and tire size combinations. Speedometer inaccuracy can cause you to think there is poor
performance. The use of oversize aftermarket tires will result in speedometer inaccuracy.
OVERSIZE TIRES WILL ALSO RESULT IN REDUCED VEHICLE PERFORMANCE DUE TO THE CHANGE IN EFFECTIVE
VEHICLE AXLE RATIO WHICH REDUCES THE DRIVE EFFORT AVAILABLE AT THE GROUND. IF THE VEHICLE IS
EQUIPPED WITH OVERSIZE TIRES, THEY MUST BE RETURNED TO STOCK SIZE AND SPEEDOMETER MUST BE ACCURATE
BEFORE CONTINUING THIS TEST.
If this cannot be done, return truck to customer with the oversize tires as the probable cause of poor performance.
d.
Road test vehicle to warm-up engine.
NOTE:
Engine temperature must be in normal range.
e.
Automatic Transmission Vehicles ONLY:
Check kickdown adjustment per Step 2. Do several WOT accelerations (D-range). Record the 1-2 and 2-3 upshift RPM and/or mph.
