Timing Cover: Service and Repair

Fig. 10 Removing crankshaft pulley & hub:

Fig. 11 Installing front cover:

SPECIAL TOOLS REQUIRED (or equivalents)
^ J-24420, Crankshaft hub puller.
^ J-23042, Centering tool.
^ J-29113, Crankshaft hub installer.

REMOVE OR DISCONNECT
1. Battery ground cable.
2. Accessory drive belts, then raise and support vehicle.
3. Right front wheel and inner fender splash shield.
4. A/C drive belt (if equipped).
5. Accessory drive belt (crankshaft) pulley.
6. Crankshaft hub from crankshaft using tool J-24420.
7. Engine front cover retaining bolts and front cover. If the cover is difficult to remove, use a rubber mallet to loosen.
8. Clean sealing surface of front cover and engine block.

INSTALL OR CONNECT
1. Apply a 2 mm bead of RTV sealant GM P/N 1052917 or equivalent to front cover sealing surface. Sealant must be wet to touch when bolts are torqued.

NOTE: When applying sealant, keep sealant out of bolt holes as this could cause a "hydraulic lock" condition.

2. Tool J-23042 in crankcase front cover seal.
3. Position front cover to engine block and install retaining bolts. Torque bolts to 10-18 Nm (7-13 ft lbs).
4. Remove centering tool.
5. Apply RTV sealant GM P/N 1052917 or equivalent to the keyway in crankshaft hub.
6. Crankshaft hub to crankshaft using tool J-29113.
^ Install J-29113 into crankshaft so that at least 6mm of thread is engaged.
^ Pull hub into position and remove J-29113 from hub.
7. Accessory drive belt (crankshaft) pulley.
8. Accessory drive belts.
9. Inner fender splash shield and right front wheel.
10. Lower vehicle and connect battery ground cable.