Eaton Fuller Pull-Type Clutches 25 - JustAnswer

1 NOTE: The following procedures apply only toEaton Fuller Easy-Pedal and Stamped AngleSpring Clutches . Solo Clutches are Bearing Travel(synchronized transmissions)MeasurementIMPORTANT: Do not skip steps in the adjust-ment operations. Internal adjustments must becorrect before making any linkage adjustmentsfor pedal free play. Incorrect adjustments cancause transmission gear clash, and slipping andburning of clutch Apply the parking brakes, and chock the Remove the clutch inspection cover from the bot-tom of the transmission clutch housing.

2 SeeFig. : When checking release bearing clear-ance, remove the free travel bylightlypullingthe release fork against the clutch release bear-ing. This eliminates any bearing Measure the clearance between the releasebearing and the clutch cover. For a single-discclutch, this clearance must be 1-7/8 inch (48mm) in order for the release-bearing to releaseproperly. For a dual-disc clutch, this clearancemust be 3/4 inch (19 mm) in order for therelease-bearing to release properly. SeeFig. release bearing clearance is not within thespecifications, then an adjustment is needed.

3 Goto "Adjustment" in this If the release bearing clearance measurement isokay, check and adjust the clutch linkage. Forinstructions, seeSection and Easy-Pedal Clutches are adjustedwith either a lockstrap (Fig. 3), or with the Kwik-Adjust mechanism (Fig. 4). Clutches with a Lockstrap1. Turn the engine flywheel until the lockstrap isaligned with the clutch inspection-cover 1andFig. Remove the lockstrap. SeeFig. Release the clutch by depressing the the pedal in the released position, or havesomeone assist you by holding the pedal downduring the adjustment Using a clutch adjusting tool, turn the adjustingring clockwise to move the release bearing to-ward the transmission, or counterclockwise tomove the release bearing toward the Clutch Inspection CoverFig.

4 1, Remove the Clutch Inspection Coverf250198c10/12/941AA. Release-Bearing Clearance: Single-Disc, 1-7/8 inch(48 mm); Dual-Disc, 3/4 inch (19 mm).1. Release BearingFig. 2, Release Bearing ClearanceEaton Fuller Pull-Type AdjustmentsBusiness Class Trucks Service manual , Supplement 31, October 2004100/1 NOTE: Each notch in the adjusting ring repre-sents about ( ) release-bearing travel. Thus, three notches movedmeans inch ( mm) or about 1/16-inchrelease-bearing After adjusting, release the pedal, and check theclearance between the release-bearing housingand the clutch cover.

5 For a single-disc clutch,when the clearance is 1-7/8 inch (48 mm), theinternal adjustment is complete. For a dual-discclutch, when the clearance is 3/4 inch (19 mm),the internal adjustment is Install the lockstrap, and tighten the bolt 35 to 40lbf ft (47 to 54 N m).IMPORTANT: Use the same length bolt wheninstalling the lockstrap. A longer bolt will lock-upthe clutch : If the lockstrap will not engage thenotches of the adjusting ring, check the clutchassembly for worn parts. For instructions, seeSubject If the release bearing clearance measurement isokay, check and adjust the clutch linkage.

6 Forinstructions, seeSection with Kwik-Adjust1. Turn the engine flywheel until the lockstrap isaligned with the clutch inspection-cover 1andFig. Release the clutch by depressing the the pedal in the released position, or havesomeone assist you by holding the pedal downduring the adjustment : An open-end wrench is not recom-mended for the following Insert a 12 point 3/4-inch socket or box-endwrench through the inspection cover the square bolt to adjust the release-bearing the adjusting ring counterclockwise tomove the release-bearing toward the engine.

7 Ro-tate the adjusting ring clockwise to move therelease-bearing toward the sure the adjustment bolt is locked when youhave completed the : Each quarter of a turn of the adjustmentbolt represents about ( )release-bearing After adjusting, release the pedal, and check theinternal clearance between the release-bearinghousing and the clutch cover. For a single-discclutch, when the internal clearance is 1-7/8 inch(48 mm), the adjustment is complete. For a dual-disc clutch, when the internal clearance is 3/4inch (19 mm), the adjustment is 2 f250005a 03/01/94 1.

8 Adjusting Ring2. LockstrapFig. 3, Clutch Equipped with a Lockstrap f250162a03/01/94 Fig. 4, Clutch Equipped with Kwik-AdjustEaton Fuller Pull-Type AdjustmentsBusiness Class Trucks Service manual , Supplement 31, October 2004100/25. If the release bearing clearance measurement isokay, check and adjust the clutch linkage. Forinstructions, seeSection Bearing Travel(nonsynchronizedtransmissions)Meas urementIMPORTANT: Do not skip steps in the adjust-ment operations. Internal adjustments must becorrect before making any linkage adjustmentsfor pedal free-travel.

9 Incorrect adjustments cancause transmission gear clash, and slipping andburning of clutch Apply the parking brakes, and chock the Remove the clutch inspection cover from the bot-tom of the transmission clutch housing. SeeFig. Slide the clutch-brake discs and washer, ortorque-limiting clutch brake, tight against thetransmission input shaft bearing cap. SeeFig. , slide the release-bearing as far as possibletowards the Measure the internal clearance between the aftface of the release-bearing and the forward faceof the clutch brake disc, or torque-limiting clutchbrake.

10 This internal clearance must be 1/2 inchto 9/16 inch ( mm to mm) in order forthe release-bearing to release properly. SeeFig. : An inspection tool A02 12419(available through the PDCs) can be used tocheck the distance between the release-bearingand the clutch brake. SeeFig. 7. One end ofthe tool has green tape on it and is inch( mm) in diameter; the other end has bluetape on it and is inch ( mm) in If using tool A02 12419 to check the distancebetween the release-bearing and the clutchbrake, position the tool so that the legs straddlethe transmission input shaft.