Timing Chain: Service and Repair

*** THIS ARTICLE INCLUDES UPDATES MADE BY TSB 95027, DATED MARCH 22, 1995 ***

CAUTION: After removing timing chain, do not turn crankshaft and camshaft separately, or valves will strike piston heads.

Timing Components:

REMOVAL
1. Disconnect battery terminal.
2. Drain coolant from radiator.
3. Remove radiator shroud and cooling fan.
4. Remove the following belts.
- Power steering drive belt.
- Compressor drive belt.
- Alternator drive belt.
5. Remove all spark plugs.

Setting TDC- Distributor:

6. Set No.1 piston at T.D.C. on its compression stroke.
7. Remove the following parts.

External Parts Removal:

- Power steering pump, idler pulley and power steering pump brackets.
- Compressor idler pulley.

Removing Crankshaft Pulley:

- Crankshaft pulley.

Removing Oil Pump:

- Oil pump with pump drive spindle.
- Rocker cover.
8. Remove oil pan. Service and Repair

Removing Front Cover:

9. Remove front cover.

Timing Parts- Locations:

10. Remove the following parts.
- Chain tensioner.
- Chain guides.
- Timing chain and sprocket.
- Oil thrower, oil pump drive gear and crankshaft sprocket.

INSPECTION

Timing Chain Component Inspection:

1. Check for cracks and excessive wear at roller links. Replace If necessary.

INSTALLATION

Front Of Crankshaft:

1. Install crankshaft sprocket, oil pump drive gear and oil thrower.
- Make sure that mating marks of crankshaft sprocket face engine front.
2. Install camshaft sprocket.
3. Confirm that No.1 piston is set at T.D.C. on its compression stroke.
4. Install timing chain.

Fig. 3 Timing Mark Alignment.:

- Set timing chain by aligning its mating marks with those of crankshaft sprocket and camshaft sprocket.

Tightening Camshaft Sprocket Bolt:

5. Tighten camshaft sprocket bolt.

Timing Chain Tensioner:

6. Install chain guide and chain tensioner.

CAUTION: SERVICE INFORMATION





If servicing the timing chain or replacing a long block, check to see if it has the steel-backed tension side guide. If not, please replace it with the countermeasure guide, including the two bolts listed. Due to the changes made to the guide, new style bolts are required. Refer to TSB 95027.

Applying Sealant To Front Cover:

7. Apply liquid gasket to front cover.
8. Apply lithium grease to sealing lip of crankshaft oil seal.
9. Install front cover.
- Be careful not to damage cylinder head gasket.

Front Cover Oil Seals:

- Do not forget oil seal.
10. Install rubber plug. Removal and Installation
11. Install oil pan. Service and Repair
12. Install oil pump and distributor driving spindle with new gasket in front cover.

Installing Oil Pump:

a. Assemble oil pump and driving spindle, aligning punchmark on driving spindle with oil hole.

Distributor Driving Spindle:

b. Make sure that driving spindle is set as shown in image.
13. Install distributor.

Setting TDC- Distributor:

14. Make sure that No. 1 piston is set at T.D.C. and that distributor rotor is set at No.1 cylinder spark position.