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Engine Maintenance
69
a. Rotate the engine in the normal direction
of rotation (clockwise viewed from the
water pump end) until the 1-4 timing mark
on the flywheel lines up with the index
mark in the timing mark access hole.
b. Check the rocker arms on the number one
cylinder to see if they are loose.
c. If the rocker arms are loose, the engine is
at top dead center of the compression
stroke for the number one cylinder.
d. If the rocker arms are tight, the engine is at
top dead center of the exhaust stroke for
the number one cylinder. Rotate the engine
360 degrees to place the engine at top dead
center of the compression stroke for the
number one cylinder.
4. Use a feeler gauge to check the valve
clearance on both valves for the number one
cylinder, the intake valve for the number two
cylinder, and the exhaust valve for the number
three cylinder. The valve clearance for both
the intake valve and the exhaust valve should
be 0.006 to 0.010 in. (0.15 to 0.25 mm).
NOTE: Check to make sure that the valve
stem cap is in good condition and is
positioned squarely on the top of the valve
stem. Replace the valve stem cap if it shows
significant wear.
5. Adjust the valves if necessary by loosening
the locknut and turning the adjustment screw
until the valve clearance is correct.
6. Hold the adjustment screw in place and
tighten the locknut.
Figure 43: Adjusting the Valve Clearance
7. Recheck the valve clearance.
8. Rotate the engine one full turn (360 degrees)
in the normal direction of rotation (clockwise
viewed from the water pump end), and align
the 1-4 timing mark on the flywheel with the
index mark in the timing mark access hole.
This is top dead center of the compression
stroke for the number four cylinder.
9. Check and adjust the exhaust valve for the
number two cylinder, the intake valve for the
number three cylinder, and both valves for the
number four cylinder.
10. Replace the rocker arm cover, the cover for
the timing mark access hole, and tighten the
fuel injection lines when finished.
AEA705
Valve Adjustments and Cylinder Configurations
Rear
Flywheel End
Front
Pulley End
Cylinder Number
1
2
3
4
Valve arrangement
E
I
E
I
E
I
E
I
Piston in No. 1 cylinder is at
TDC on compression stroke
Piston in No. 4 cylinder is at
TDC on compression stroke
Summary of Contents for 002008
Page 4: ...4 ...
Page 30: ...Unit Description 30 Figure 9 Front View AJA920 ...
Page 31: ...Unit Description 31 1 Access Panels 2 Defrost Damper Figure 10 Back View 1 2 ARA104 ...
Page 114: ...Mechanical Diagnosis 114 ...
Page 116: ...Electric Standby Diagnosis 116 ...
Page 120: ...Remote Evaporator Specifications 120 ...
Page 122: ...Remote Evaporator Maintenance Inspection Schedule 122 ...
Page 128: ...Remote Evaporator Electrical Maintenance 128 ...
Page 132: ...Remote Evaporator Refrigeration Service Operations 132 ...
Page 134: ...Remote Evaporator Structural Maintenance 134 ...
Page 136: ...Remote Evaporator System Diagnosis 136 ...
Page 140: ...Index 140 ...
Page 142: ......
Page 143: ...143 Model 30 Schematic Diagram Page 1 of 2 ...
Page 144: ...144 Model 30 Schematic Diagram Page 2 of 2 ...
Page 145: ...145 Model 30 Wiring Diagram Page 1 of 4 ...
Page 146: ...146 Model 30 Wiring Diagram Page 2 of 4 ...
Page 147: ...147 Model 30 Wiring Diagram Page 3 of 4 ...
Page 148: ...148 Model 30 Wiring Diagram Page 4 of 4 ...
Page 149: ...149 Model 50 Schematic Diagram Page 1 of 2 ...
Page 150: ...150 Model 50 Schematic Diagram Page 2 of 2 ...
Page 151: ...151 Model 50 Wiring Diagram Page 1 of 5 ...
Page 152: ...152 Model 50 Wiring Diagram Page 2 of 5 ...
Page 153: ...153 Model 50 Wiring Diagram Page 3 of 5 ...