How to Replace Timing Chain on Cadillac Seville?

The procedure mentioned here in this chapter will work for  Cadillac DeVille, Eldorado, Seville From 1999-2005 car models.

The details and diagrams to replace Timing Chain & Sprockets is as follows:----


Primary Chain/Intermediate Sprocket

1. Before servicing vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following: 
   
   NOTE

   Align all timing marks prior to removal of the timing chains.
   
   
   
   
   Engine

   Accessory drive belt

   Drive belt pulley

   Dive belt tensioner

   Front cover

   Right and left camshaft covers
   
   
   
   
   Timing chain tensioners

   Camshaft sprocket bolts

   Camshaft sprockets (4)

   Right and left secondary chains

   Intermediate shaft sprocket bolt and the sprocket

   Primary timing sprockets and primary chain off the engine 
   
   
   

   Fig. Primary drive chain components

To install:

NOTE

The following procedure must be followed to set the camshaft timing on the vehicle.

1. Install the primary and secondary chain guides.
2. Rotate the crankshaft until the sprocket drive key is at the 1 o'clock position.
3. Install or connect the following:
   
   NOTE

   The crankshaft sprocket keyway will have to slide over the key on the crankshaft. If it is necessary to turn the crankshaft sprocket, the intermediate shaft sprocket will also have to be turned so the timing mark remains aligned with the crankshaft sprocket.
   
   
   
   
   Crankshaft sprocket and intermediate shaft sprocket in the primary timing chain so the timing marks are aligned

   Primary timing chain assembly
   
   
   
   
   Intermediate shaft sprocket bolt. Torque the bolt to 45 ft. lbs. (61 Nm).

   Primary timing chain tensioner. Torque the tensioner mounting bolts to 20 ft. lbs. (27 Nm).

   Right and left secondary chains with the timing marks aligned

   Camshaft sprockets (4). Torque the bolts to 90 ft. lbs. (120 Nm).

   Right and left camshaft covers. Torque the bolts to 89 inch lbs. (10 Nm).

   Front engine cover. Torque the bolts to 89 inch lbs. (10 Nm).

   Accessory drive belt

   Drive belt pulley

   Drive belt tensioner

   Engine
4. Refill the cooling system.
5. Start the engine and check for leaks.

Right Side Secondary Chain

1. Before servicing the vehicle, refer to the Precautions Section.
2. Remove or disconnect the following:
   
   
   Negative battery cable

   Exhaust Y-pipe at the converter

   Tower-to-tower brace

   Ignition Control Module (ICM) wiring connectors and mounting bolts

   ICM

   Spark plug wires on the right bank

   Positive Crankcase Ventilation (PCV) valve

   Canister purge solenoid from the rear of the cover

   Front cover

   Camshaft cover screws

   Right and left torque struts
3. Safely support the front of the engine cradle and remove the 2 mounting bolts at the front of the cradle.
4. Lower the engine cradle or raise the vehicle to provide clearance at the rear of the engine compartment.
   
   NOTE

   The camshaft cover gasket is reusable as long as it is not damaged.
   
   
   
   
   Camshaft cover
   
   
   
   
   Right side secondary chain tensioner

   Right side chain guide. Access the upper chain guide mounting bolt through the hole in the cylinder head capped with the plastic plug.

   Right side camshaft sprocket bolts and camshaft sprockets

   Secondary drive chain

To install:

Fig. Rotating tensioner release lever

1. Install the secondary timing chain over the outer row of teeth on the intermediate shaft sprocket. Route the chain over the chain guide and install the exhaust camshaft sprocket so the RE (Right Head Exhaust) pin engages the sprocket notch. There should be no slack in the lower section of the timing chain and the camshaft drive pin must be perpendicular to the cylinder head face. 
   
   NOTE

   The Right Exhaust (RE) camshaft sprocket must contain the Camshaft Position (CMP) sensor pick-up.
2. Install the intake camshaft sprocket into the chain so the sprocket notch RI(Right Head Intake) engages the camshaft and the camshaft drive pin remains perpendicular to the cylinder head face. A hex is cast into the camshafts behind the lobes for cylinder No. 1, so an open end wrench may be used to provide minor repositioning of the camshafts. 
   
   
   
   Fig. Correct timing chain alignment
3. Install or connect the following:
   
   
   Both camshaft sprocket bolts loosely

   Chain tensioner. Torque the mounting bolts to 20 ft. lbs. (27 Nm).
4. Torque the camshaft sprocket bolts to 90 ft. lbs. (120 Nm).
   
   
   Spark plug and camshaft cover seals

   Camshaft cover. Torque the screws to 84 inch lbs. (10 Nm).

   Engine cradle. Torque both bolts to 75 ft. lbs. (100 Nm).
5. Install the right and left torque struts. Torque the retaining bolts to 45 ft. lbs. (60 Nm).
   
   NOTE

   It is important during installation that the engine torque struts are not preloaded in their installed position. Adjustment is provided at the point the strut fastens to the core support bracket. Be sure this bolt is loose during assembly.
   
   
   
   
   Front cover. Torque the bolts to 89 inch lbs. (10 Nm).

   Strut-to-core support bracket bolt. Torque it to 45 ft. lbs. (60 Nm).

   Canister purge solenoid to the rear of the cover

   PCV valve

   ICM and the wiring connectors

   Spark plug wires on the right-bank

   Tower-to-tower brace

   Exhaust Y-pipe to the converter. Torque the bolts to 20 ft. lbs. (27 Nm).

   Negative battery cable
6. Start the engine and check for leaks.

These details will help.

Thanks.           

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html