autotech 10.109.420 Manual Do Utilizador

cont'd.

6. Apply oil to the bearing surfaces, and a small amount of assembly lube to the lobes of the

new camshaft.  Lay the camshaft in the head with the lobes for the number one cylinder

facing up.  Install bearing caps two and five, tightening down gradually and crosswise until

the camshaft is pushed completely into the bearing saddles.  Install the remaining bearing

caps and torque all nuts to 15 ft/lb.

7. Check to see if the dot on the inside of the cam sprocket lines up with the upper edge of

the camshaft drive belt inner cover (fig. 1).  If not, rotate cam slightly until it does.

8. Slide camshaft belt over cam sprocket, taking care not to disturb the alignment of the

camshaft sprocket.

9. Re-install valve cover, tightening the nuts to 7 ft/lb.

10.Using a special spanner wrench (AST P/N 10.012.86400 or equiv.), tighten the drive belt by

rotating the tension pulley in the direction of the arrow (fig. 5). The belt should feel tight

when twisted 90 degrees with the thumb and forefinger, halfway between the camshaft and

intermediate shaft pulleys.  Tighten the pulley retaining nut to 33 ft/lb.

11.Turn crankshaft two complete revolutions and check belt tension, camshaft alignment,

crankshaft alignment, and distributor alignment.  If everything checks out, re-install dis-

tributor cap, timing belt cover, idle stabilizer valve assembly, brackets, crankcase ventilation

hose assembly, and after-run control valve connector.

12.Start engine and run it at around 2000 RPM for twenty minutes.  This is the crucial break-

in period for a new cam.  It is important that the cam has good oil pressure at this time!

Once twenty minutes are up, you're ready to run.

IMPORTANT!  The blue coolant temperature sender must be disconnected when checking or

adjusting ignition timing.

fig. 1

fig. 2

fig. 3

fig. 4

fig. 5