Inspection

1. Check gear teeth and timing case for excessive wear or damage.
2. Check clearances as follows:

Fig. 26 Checking Outer Gear To Case Clearance:

a. Check clearance between outer gear circumference and timing case as shown in Fig. 30. Clearance should be 0.0039-0.0079 inch.

Fig. 27 Checking Outer Gear Tooth To Crescent Clearance:

b. Check clearance between outer gear tooth and crescent as shown in Fig. 31. Clearance should be 0.0087-0.0134 inch.

Fig. 27 Checking Outer Gear Tooth To Crescent Clearance:

c. Check clearance between inner gear tooth and crescent as shown in Fig. 32. Clearance should be 0.0083-0.0126 inch.
d. Check endplay of inner and outer gears. Endplay should be 0.0016-0.0039 inch.
e. If damage or values other than those specified are noted, replace parts as necessary.