F 250 2WD Pickup V8-351 5.8L VIN H 4-bbl HP (1985)
Technical Service Bulletin # 90167
Date: 900801
M/T - Clutch Fluid Leaks/Incomplete Release
Article No. 90-16-7
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CRACKS - DASH (ENGINE COMPARTMENT BULKHEAD) - CLUTCH MASTER CYLINDER AREA - VEHICLES BUILT BEFORE
6/15/90
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CLUTCH - HIGH EFFORT - DASH CRACKED IN CLUTCH MASTER CYLINDER AREA - VEHICLES BUILT BEFORE 6/15/90
LIGHT TRUCK:
1984-90 BRONCO, F-150, F-250, F-350 1988-90 F SUPER DUTY
ISSUE:
Incomplete clutch release and/or hydraulic fluid leaking into the cab from the clutch master cylinder may be caused by the reinforcement
plate on the clutch master cylinder separating from the dash panel. The separation of the reinforcement plate reduces the clutch master
cylinder pushrod travel. Reinforcement plate separation can also cause deflection of the clutch master cylinder that results in a misalignment
of the pushrod to the clutch master cylinder. Misalignment causes the "O" ring in front of the secondary seal to leak hydraulic fluid.
ACTION:
Inspect the truck and, if necessary, use the following service procedure to install a reinforcement kit.
Inspection Procedure
1.
If the truck is a 1988 or later model, confirm that the starter interlock switch operates (the engine can be started) with the clutch pedal at least 0.5"
(12.7 mm) from the floor.
2.
Test drive the truck and check for good clutch release. There should be no grinding of the gears, particularly when shifting from neutral to reverse
gear.
3.
If the truck passes these tests, go to the Small Reinforcement Installation Procedure Section of this article.
4.
If either of the above conditions are not met, check the hydraulic system for air. Refer to the Suggested Bleeding Procedure at the end of this
article.
5.
Test drive the truck and check for improved clutch release.
6.
If there is no improvement, proceed as follows:
a.
Remove the clutch master cylinder pushrod from the release lever pin on the release lever.
