Timing Cover: Service and Repair
Removal1. Remove timing belt as outlined under TIMING BELT.
2. Remove oil pan and screen.
3. Remove attaching bolts, then the front case assembly.
4. Remove oil pump cover.
5. Remove inner and outer gears from case, noting location of mating marks to aid in installation.
6. Remove plug, spring and relief valve from case.
Inspection
Fig. 26 Checking Outer Gear To Case Clearance:
Fig. 27 Checking Outer Gear Tooth To Crescent Clearance:
Fig. 27 Checking Outer Gear Tooth To Crescent Clearance:
1. Check gear teeth and timing case for excessive wear or damage.
2. Check clearance between outer gear circumference and timing case as shown in Fig. 26. Clearance should be .0039-.0079 inch.
3. Check clearance between outer gear tooth and crescent as shown in Fig. 27. Clearance should be .0087-.0134 inch.
4. Check clearance between inner gear tooth and crescent as shown in Fig. 28. Clearance should be .0083-.0126 inch.
5. Check endplay of inner and outer gears. Endplay should be .0016-.0039 inch.
6. If damage or values other than those specified are noted, replace parts as necessary.
Installation
Fig. 29 Timing Case Cover Bolt Locations:
Fig. 30 Applying Sealer To Oil Pan Flange:
1. Install inner and outer gears into timing case, ensuring mating marks are properly aligned.
2. Install oil pump cover, then tighten to specifications.
3. Install relief valve, spring and plug, then tighten to specification.
4. Install front case assembly, oil pan and screen, then the timing belt as described under TIMING BELT When installing timing case attaching bolts, refer to Fig. 29, and note bolts to be installed in location A are .79 inch in length, bolts installed in location B are 1.18 inches in length and bolts installed in location C are 2.36 inches in length. Prior to installing oil pan, apply sealer to pan flange as shown in Fig. 30.