VALVE ADJUSTMENT (PAGE 2)
Note: The adjustment of each cylinder's valves must be done at a specific crankshaft location (top dead center for that cylinder). Failure to place the engine in a specific location will result in misadjusted valves and possible engine damage if it's run. THe 19mm wrench is used to to turn over the engine by the generator/alternator pulley bolt (bolt holding the upper fan belt pulley on). If the belt is loose, it may slip as you turn the bolt, when this happens, I grab both sides of the belt as it enters and exits the upper pulley and squeeze them together with one hand while I use the wrench to turn the pulley with the other, this will increase the tension enough to turn the engine over by this method.
The valve adjustment is started with cylinder #1, this is forward most cylinder located on the passenger side of the vehicle (figure 1). There is two valves associated with each cylinder, intake and exhaust. Each cylinder head handles two cylinders so there is 4 valves per head. The two outermost valves are exhaust and the two inner are intake (figure 2). Exhaust valves typically require adjustment more often as they are subjected to higher heat causing the valve to slightly stretch decreasing (tightening) the lash (gap). Valves are measured between the top of the valve and the adjusting screw (figure 3).
FIGURE 1
1 Diplacement Table
2 Maint. Intervals
3 Valve Adjustment
4 Engine Calculator
5 Essential Tools
6 Type 1 Changes
NEW VISITORS SINCE FEB 2005
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