Figure 5-21. Pinion Clearance F1000ORG-2

TM5-4110-234-14

TO 40R7-5-7-1

(2) The overrunning clutch is packed in a special high melting point grease and after its initial assembly, needs

no further lubrication. This clutch prevents the engine from turning starter motor at too high a speed once it is started. Do

not subject the overrunning clutch to grease dissolving or high temperature cleaning methods. This may cause the clutch

to lose some or all of its grease.

(3) If the pinion does not turn freely in the clutch in the overrunning direction, or the clutch tends to slip in the

opposite direction, replace the assembly. A worn clutch indicated by excessive looseness of the pinion requires

replacement.

NOTE

Never attempt to repair or relubricate a defective clutch.

(4) The clearance between the pinion and the housing should be approximately 1/16 to 1/8-inch (0.16 to 0.31

cm) when the pinion is in the operating position. See figure 5-21.

Figure 5-21. Pinion Clearance F1000ORG-2

Drive Pinion.

(1) The teeth of the drive pinion are chamfered on only one side and specially rounded and polished to make the

automatic meshing with the flywheel ring gear more efficient. The drive is designed so if the ends of the pinion teeth meet

end to end with the ring gear teeth (keeping in mind that the drive is freely mounted on the drive shaft), the drive assembly

can move back slightly against the pressure of the driving spring. The longitudinal movement permits the pinion to turn

slightly farther and enter the flywheel ring gear.

(2) Keep the drive shaft free of rust, burrs or bends so the drive can move freely along it. A damaged pinion

necessitates the replacement of the assembly. See figure 5-22.

5-43