TESTS AND ADJUSTMENTS
5-3
5
5.2 Cooling System
Thermostat Test
See Figures 5-4 and 5-5.
Figure 5-4
1. Check that the air bleed valve (1) of thermostat is not
blocked.
2. Inspect valve seat (2) for any substance that could
interfere with sealing.
Figure 5-5
3. Immerse the thermostat (4) in water and heat it
gradually with an appropriate heater (5).
4. Observe thermometer (3) to verify that the
thermostat opens at the specified temperature.
Replace thermostat if not to specifications.
Thermostat Start-to-Open Temperature:
190°F (88°C)
Full Open Temperature: 205°F (96°C)
5.3 Cylinder Head, Cams, and
Valve Train
Valve Clearance Check and
Adjustment
See Figures 5-6 through 5-13.
Check
Figure 5-6
1. Remove the cam cover (1). (See “Cam Cover” on
page 7-17.)
Figure 5-7
2. Turn the crankshaft clockwise as viewed from front.
TN0429
1
2
TN0430
3
4
5
Valve
Clearance
Intake Exhaust
Cold 0.007—0.009 in.
(0.18—0.23 mm)
0.012—0.014 in.
(0.30—0.35 mm)
TN0539
1
TN0540
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