Setting Internal Head Temperature - Honeywell Precision Platform 4022 Series System Manual

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9.9.4.3.
p/n 6510020208
head is one quart (about one liter) per minute. Most outboard
sensors have their own solenoid temperature control circuits, so
this is not an issue. However, some Gloss sensors may need a
restrictor valve installed.
11. If the problem is not found, check the coolant flow through the
head. This can be done by opening the solenoid valve on the head
support arm and measuring the coolant that flows out the drain
hose at the head support arm:
a. Remove the drain hose from the coolant manifold.
b. Insert the female disconnect fitting.
c. Place a one liter container under the hose.
d. Disconnect the plug to the coolant solenoid and temporarily
connect 24 VDC.
e. Measure the time it takes to fill the container.
f. If it takes more than one minute to fill the container,
continue to look for the blockage in the coolant lines,
solenoid valve, ECU, and other areas. Check the power track
hoses for kinks, or other problems.

Setting internal head temperature

This is the procedure for setting the internal head temperature (Before
starting this procedure, follow the procedure in 9.9.4.2).
1. Place the heads in the park position.
2. Remove the head covers.
3. Turn the solenoid control pot to the mid position. It is a 10-turn pot,
so turn it fully counterclockwise (it will click when fully
counterclockwise) and then turn it five turns clockwise.
4. Turn the knob on the trim heater control to 3.
5. Close the heads and monitor the head temp on the User Station. It
should stabilize at 41°C +/- 3°C (105°F ° +/- 5°F) in 30 minutes.
10/18/07
Heads and sensors
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