ARMY TM 9-6115-670-14&P
4-60
4.25. TEMPERATURE SENDER.
This task covers:
a. Test
b. Replace
INITIAL SETUP
Tools
Shop Equipment, Electrical Repair,
Semi trailer Mounted
(Item 3, Appendix B)
Equipment Conditions
Engine stopped and allowed to cool completely.
MASTER ON-OFF switch on APU controller set to
OFF.
Materials/Parts
Temperature Sender
Sealing Compound 88-20595-2
(Item 18, Appendix F)
TEST
a. Remove cap (5, Figure 4-12) and tag electrical lead (4).
b. Remove electrical lead (4) and lock washer (3) from sender (2).
c. Start APU (para 2.5.) and monitor resistance to ground from terminal on sender. As engine heats
up, resistance should decrease to 72.3 ± 4.3 ohms. If not, replace sender (2).
d. Shut down APU (para 2.6.).
REPLACE
a. Drain coolant.
b. Remove cap (5, Figure 4-12, Sheet 2) and tag electrical lead (4).
c. Remove electrical lead (4) and lock washer (3).
d. Remove temperature sender (2) from temperature sender mounting block (1) by turning counter
clockwise (ccw).
e. Apply sealing compound to threads on new temperature sender.
f. Install new sender (2) in temperature sender mounting block (1).
g. Install lock washer (3), electrical lead (4), and cap (5) on temperature sender terminal (2). Remove
tag.
WARNING
Allow engine to cool completely before removing
temperature sender. Failure to observe this warning
will result in severe injury to personnel.
