TM 5-2420-231-23-1
0025
Table 1. Alternator Does Not Charge or Alternator Charging Indicator Fault - Continued.
025
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
9. Visually inspect drive belt ten-
Drive Belt Tensioner Mounting Bolt
Alternator Does Not Charge
OK - Proceed to step 10.
sioner mounting bolt (Figure 4,
or Alternator Charging
Item 2).
Drive Belt Tensioner Mounting Bolt
Indicator Fault - Continued
Loose - Tighten drive belt tensioner
mounting bolt (WP 0133).
Proceed to step 10.
10. Visually inspect drive belt ten-
Drive Belt Tensioner Pulley OK -
Proceed to step 11.
sioner pulley (Figure 4, Item 3) for
wear and damage.
Drive Belt Tensioner Pulley Worn or
Damaged - Replace drive belt
tensioner (WP 0133).
Proceed to Test Step 8.
11. Rotate drive belt tensioner pulley
Drive Belt Tensioner Pulley OK -
Proceed to step 12.
(Figure 4, Item 3) by hand while
listening for noise and rough or
Drive Belt Tensioner Pulley Noisy
When Rotated - Replace drive belt
sticking bearings.
tensioner (WP 0133).
Proceed to Test Step 8.
Drive Belt Tensioner Pulley Binds,
Sticks, or Is Rough When Rotated -
Replace drive belt tensioner
(WP 0133).
Proceed to Test Step 8.
12. Slowly rotate drive belt tensioner
Drive Belt Tensioner OK - Install drive
(Figure 4, Item 1) through the full
belt (WP 0095).
limits of travel. The drive belt ten-
Proceed to Test Step 3.
sioner (Figure 4, Item 3) should
Drive Belt Tensioner Binds or Sticks
fully extend when released and
- Replace drive belt tensioner (WP
actuate smoothly without binding
0133).
or sticking.
Proceed to Test Step 8.
Drive Belt Tensioner Does Not Fully
Extend When Released - Replace
drive belt tensioner (WP 0133).
Proceed to Test Step 8.
0025-6