User Manual

RENR9968-02 53
Testing and Adjusting Section
Start the engine. Run the engine until the temperature
reaches the desired range according to the test
thermometer. If necessary, place a cover over part of
the radiator in order to cause a restriction of the air
flow. The reading on the temperature indicator should
agree with the test thermometer within the to leran c e
range of the water temperature indicator.
i01666401
Water Temperature Regulator
- Test
SMCS Code: 1355-081; 1355-081-ON
Personal injury can result from escaping fluid un-
der pressure.
If a pressure indication is shown on the indicator,
push the release valve in order to relieve pressure
before removing any hose from the radiator.
1. Remove the water temperature regulator from the
engine.
2. Heat water in a pan until the temperature of
the water is equal to the fully open temperature
of the water temperature regulator. Refer to
Specifications, “Water Temperature Regulator”
for the fully open temperature of the water
temperature regulator. Stir the water in the pan.
This will distribute the tempera ture throughou t the
pan.
3. Hang the water temperature regulator in the pan
of water. The water temperature regulator must
be below the surface of the water. The water
temperature regulator must be away from the
sides and the bottom of the pan.
4. Keep the water at the correct temperature for ten
minutes.
5. After ten minutes, remove the water temperature
regulator. Immediately measure the opening
of the water temperature regulator. Refer to
Specifications, “Water Temperature Regulator”
for the minimum opening distance of the
water temperature regulator at the fully open
temperature.
If the distance is less than the amount listed in the
manual, replace the water temperature regulator.
i02228472
Water Pump - T est
SMCS Code: 1361-081
Ta b l e 1 5
Tools Needed
Part
Number
Part Name
Quantity
6V-7775
Air Pressure Gauge
1
g01124406
Illustration 44
(1) Water manifold
(2) Plug
Making contact with a running engine can cause
burns from ho
t parts and can cause injury from
rotating parts.
When working
on an engine that is running, avoid
contact with hot parts and rotating parts.
Perform the f
ollowing procedure in order to determine
if the water pump is operating correctly:
1. Remove plug (
2) from water manifold (1).
2. Install the 6 V-7 775 Air Pressu re Gaug e in the
port.
3. Start the engine. Run the engine until the coolant
is at operat
ing tem perature.
4. Note the water pump pressure. The water pump
pressure sh
ould be at least 100 kPa (15 psi) at
rated speed.