Timing Belt

Fig 1: Identifying Crankshaft And Camshaft Timing Marks

Courtesy of DAIMLERCHRYSLER CORP.

1 - CAMSHAFT TIMING MARKS

2 - CRANKSHAFT TDC MARKS

3 - TRAILING EDGE OF SPROCKET TOOTH

Set crankshaft sprocket to TDC by aligning the sprocket with the arrow on the oil pump housing (2).

Fig 2: Camshaft Sprocket Alignment For Timing Belt Installation

Courtesy of DAIMLERCHRYSLER CORP.

1 - CAMSHAFT SPROCKET-EXHAUST

2 - CAMSHAFT SPROCKET-INTAKE

3 - 1/2 NOTCH LOCATION

Set camshafts timing marks so that the exhaust camshaft sprocket (1) is a 1/2 notch (3) below the intake camshaft sprocket (2). See Fig 2.

CAUTION: Ensure that the arrows on both camshaft sprockets are facing up.

Fig 3: Timing Belt Installation Diagram

Courtesy of DAIMLERCHRYSLER CORP.

1 - CAMSHAFT TIMING MARKS 1/2 NOTCH LOCATION

2 - CRANKSHAFT AT TDC

3 - INSTALL BELT IN THIS DIRECTION

4 - ROTATE CAMSHAFT SPROCKET TO TAKE UP BELT SLACK

Install timing belt. Starting at the crankshaft, go around the water pump sprocket, idler pulley, camshaft sprockets and then around the tensioner. See Fig 3.

Move the exhaust camshaft sprocket (4) counterclockwise to align marks and take up belt slack. See Fig 3.

Fig 4: Timing Belt Tension Adjustment

Courtesy of DAIMLERCHRYSLER CORP.

1 - ALIGN SETTING NOTCH WITH SPRING TANG

2 - TOP PLATE

3 - 6mm ALLEN WRENCH

4 - LOCK BOLT

5 - SETTING NOTCH

6 - SPRING TANG

Insert a 6 mm Allen wrench (3) into the hexagon opening located on the top plate (2) of the belt tensioner pulley. Rotate the top plate (2)COUNTERCLOCKWISE . The tensioner pulley will move against the belt and the tensioner setting notch (1) will eventually start to move clockwise. Watching the movement of the setting notch (1), continue rotating the top plate (2) counterclockwise until the setting notch is aligned with the spring tang (6). See Fig 4. Using the allen wrench (3) to prevent the top plate (2) from moving, torque the tensioner lock bolt (4) to 25 N.m (220 in. lbs.). Setting notch (5) and spring tang (6) should remain aligned after lock bolt (4) is torqued.

Remove allen wrench (3) and torque wrench.

NOTE: Repositioning the crankshaft to the TDC position must be done only during the CLOCKWISE rotation movement. If TDC is missed, rotate a further two revolutions until TDC is achieved. DO NOT rotate crankshaft counterclockwise as this will make verification of proper tensioner setting impossible.

Fig 5: Identifying Crankshaft And Camshaft Timing Marks

Courtesy of DAIMLERCHRYSLER CORP.

1 - CAMSHAFT TIMING MARKS

2 - CRANKSHAFT TDC MARKS

3 - TRAILING EDGE OF SPROCKET TOOTH

Rotate the crankshaft CLOCKWISE two complete revolutions manually for seating of the belt, until the crankshaft is repositioned at the TDC position. Verify that the camshaft (1) and crankshaft (2) timing marks are in proper position. See Fig 5.

Fig 6: Timing Belt Tension Verification
Courtesy of DAIMLERCHRYSLER CORP.

1 - SPRING TANG

2 - TOLERANCE WINDOW
Check if the spring tang (1) is within the tolerance window (2). See Fig 6. If the spring tang (1) is within the tolerance window (2), the installation process is complete and nothing further is required. If the spring tang (1) is not within the tolerance window (2), repeat Steps 5 through 7.

Fig 7: Front Timing Belt Covers
Courtesy of DAIMLERCHRYSLER CORP.

1 - UPPER COVER FASTENERS

2 - LOWER COVER FASTENERS
Install upper and lower front timing belt covers. See Fig 7. (Refer to ENGINE/VALVE TIMING/TIMING BELT COVER(S) - INSTALLATION) .
Connect negative cable to battery.