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 10.
Rotate drive belt idler pulley
Drive Belt Idler Pulley OK - Proceed
Gauge Indicates High
(Figure 14, Item 1) by hand while
to step 11.
Temperature, Does Not
listening for noise and rough or
Drive Belt Idler Pulley Noisy When
Function, or Is Inaccurate -
sticking bearings.
Rotated - Replace drive belt idler pulley
Continued
(WP 0134).
Proceed to Test Step 9.
Drive Belt Idler Pulley Binds, Sticks,
or Is Rough When Rotated - Replace
drive belt idler pulley (WP 0134).
Proceed to Test Step 9.
Figure 14. Drive Belt Idler Pulley.
0021
