1.4.5. compression check

sprocket on the other side into the timing chain. Check that the timing marks are aligned as shown in Fig. 1.74 and bolt the camshaft sprocket to the camshaft. Timing chains without marks must be fitted in accordance with the marks made during dismantling.

• Place a new lockplate over the camshaft sprocket and fit the three bolts. Tighten the bolts to 2.3 kgm (17 ft.lb.). Fig. 1.75 shows the operation. The lock plate tabs must be bent over the sides of the three bolts.

Dismantling of the chain tensioner is described on Page 28. Follow the instructions for the chain tensioner in question until the tensioner is refitted to the cylinder block.

• Fit the timing cover with a new gasket The cover must be centred to draw in the oil seal. The operation is described on page 56 during the replacement of the front oil seal. Tighten the cover screws to 1.3 kgm (10 ft.lb.).
• Fit the Woodruff key and slide the pulley in position. Place the drive belt behind the pulley to facilitate its installation.
• Block the crankshaft against rotation and tighten the nut to 17.0 kgm (122.5 ft.lb.).

If the timing plate has been unscrewed from the cover, align it as follows:

• Rotate the crankshaft until the pistons of No. 1 and No. 4 cylinder are at top dead centre. The valves of No. 4 cylinder must be “rocking”, i.e. one valve must be opening and the other one closing. The exact TDC point should, however, be set with a dial gauge, applied as shown in Fig. 1.41. Rotate the crankshaft until the dial gauge needle shows that TDC is obtained.
• Fit the timing plate and rotate it until the “Zero” in the plate is opposite the timing mark on the pulley. Tighten the two nuts. One of the nuts and the plate should be marked with paint for future use of the timing plate.
• The remaining operations are carried out in reverse order to the removal procedure.

1.4.5. COMPRESSION CHECK

A compression check can be carried out as follows:

• Unscrew the spark plugs.
• Open the throttle valve flap and the starter plate.
• Insert the compression tester into the first plug bore.