TM 5-2420-231-23-1
0021
Table 1. Engine Coolant Temperature Gauge Indicates High Temperature,
Does Not Function, or Is Inaccurate - Continued.
021
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Engine Coolant Temperature
Test Step 4. Inspect Lower Coolant
Gauge Indicates High
Suction Hose and Upper Radiator
Temperature, Does Not
Hose.
Function, or Is Inaccurate -
1. Inspect lower coolant suction hose
Lower Coolant Suction Hose and
Continued
(Figure 4, Item 1) for loose clamps
Clamps OK - Proceed to step 2.
(Figure 4, Items 3 and 5), cracks,
Lower Coolant Suction Hose Clamps
splits, damage, and Class III leaks
Loose or Leaking at Connection -
at suction tube (Figure 4, Item 2)
Tighten or replace lower coolant suction
and radiator (Figure 4, Item 4).
hose clamp (WP 0097).
Proceed to Test Step 9.
Lower Coolant Suction Hose
Cracked, Split, Damaged, or Leaking
- Replace lower coolant suction hose
(WP 0097).
Proceed to Test Step 9.
Figure 4. Lower Coolant Suction Hose and Coolant Suction Tube.
0021
