THERMOSTAT - CONTINUED -624880459

TM 5-2420-222-20-1

THERMOSTAT - CONTINUED

ACTION

LOCATION

ITEM

REMARKS

TESTING

NOTE

Loader backhoe will have themostat with one of three temperature settings: 180F (82C), 192F (89C),

or 205F (96C).

Replace defective parts as needed.

WARNING

Be careful when heating fluids. Wear gloves to protect your hands from hot parts and fluids or severe

burns could result.

Thermostat (1)

a. Note temperature setting stamped on

case.

b. Along with thermometer, suspend in

suitable heating equipment, two-thirds

full of water.

Make sure neither thermostat nor

thermometer touch sides or bottom

of heating equipment.

c. At the same time, using suitable heating

equipment, heat and stir water and

watch both thermostat and thermometer.

Stirring helps maintain even

temperature as water heats.

d. Note temperature at which thermostat

is fully open.

Good 180F (88C) thermostat

should be fully open between 1790

and 181 F (870 and 890C).

Good 1920F (89C) thermostat

should be fully open between 191 0

and 193F (880 and 900C).

Good 2050F (96 OC) thermostat

should be fully open between 206

and 208F (95 and 970C).

e. Take thermostat and thermometer out

of water.

Thermostat should close as It cools.

INSTALLATION

10. Thermostat

Thermostat (1)

Put in.

housing (2)

2-398