TM 5-2420-231-23-1
0017
Table 1. Engine Has Low Power or Does Not Respond to Throttle Pedal - Continued.
017
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. Observe air filter restriction indica-
Engine Has Low Power or
Air Filter Restriction Indicator
tor (TM 5-2420-231-10). Air filter
Illuminates, Then Goes Out - Proceed
Does Not Respond to
restriction indicator should illumi-
to step 12.
Throttle Pedal - Continued
nate for approximately 2 seconds,
Air Filter Restriction Indicator Does
and then go out.
Not Illuminate - Diagnose air filter
restriction indicator (WP 0026) and then
proceed to Test Step 5 to verify
symptom is resolved.
Air Filter Restriction Indicator
Remains Illuminated - Diagnose air
filter restriction indicator (WP 0026) and
then proceed to Test Step 5.
12. Start and operate engine for
approximately 10 minutes (TM 5-
2420-231-10).
13. Observe the air filter restriction
Air Filter Restriction Indicator Not
Illuminated - Proceed to Test Step 3.
indicator (TM 5-2420-231-10). The
air filter restriction indicator should
Air Filter Restriction Indicator
Illuminated - Turn ignition switch to the
not be illuminated.
off position (TM 5-2420-231-10).
Proceed to Test Step 2.
Test Step 2. Inspect Air Intake
System.
1. Inspect the air cleaner primary and
Primary/Secondary Air Filter
Element OK - Proceed to step 2.
secondary elements for dirt and
debris (TM 5-2420-231-10).
Primary/Secondary Air Filter
Element Restricted With Dirt or
Debris - Replace primary and
secondary air filter elements
(WP 0101).
Proceed to Test Step 5.
2. Visually inspect aspirate hose (Fig-
Aspirate Hose to Air Cleaner OK -
ure 4, Item 1) between aspirate
proceed to step 3.
check valve (Figure 4, Item 5) and
Aspirate Hose to Air Cleaner
air cleaner (Figure 4, Item 2) for
Collapsed, Damaged, or Sharply
collapsed areas, damage, or sharp
Bent - Reroute or replace aspirate hose
bends.
(Figure 4, Item 1) (WP 0102).
Proceed to Test Step 5.
3. Visually inspect aspirate hose (Fig-
Aspirate Hose to Muffler OK - proceed
ure 4, Item 9) between aspirate
to step 4.
check valve (Figure 4, Item 5) and
Aspirate Hose to Muffler Collapsed,
muffler (Figure 4, Item 7) for col-
Damaged, or Sharply Bent -
lapsed areas, damage, or sharp
Reposition or replace aspirate hose
bends.
(Figure 4, Item 9) (WP 0102).
Proceed to Test Step 5.
0017-5