TM 5-3805-298-23-2
0146
Table 1. Machine Will Not Stay in a Straight Line - Continued.
0146
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Machine Will Not Stay in a
3. Visually inspect hydraulic oil in
Air Bubbles Present in Hydraulic
Straight Line - Continued
sight glass for air bubbles.
Oil Proceed to Test Step 3.
No Air Bubbles Present in Hydraulic
Oil - Proceed to Test Step 4.
Test Step 3. Inspect Hydraulic
Hoses.
1. Inspect suction hoses on hydraulic
Suction Hoses Are Not Leaking
tank for Class III leaks
Proceed to step 2.
(WP 0173). Check ground for
Suction Hoses Are Leaking Tighten
signs of leakage.
or replace suction hoses on hydraulic
tank (WP 0173).
Proceed to Test Step 5.
2. Visually inspect the supply hoses
Pump Supply Hoses Are Not
of the pump for Class III leaks
Leaking Proceed to step 3.
(WP 0173). Check ground for
Pump Supply Hoses Are Leaking
signs of leakage.
Tighten or replace pump supply hoses
Proceed to Test Step 5.
3. Remove main control valve cover
for access to hoses
(WP 0371).
Main Control Valve Hoses Are Not
4. Visually inspect hoses to the main
Leaking Proceed to step 5.
control valve for Class III leaks.
Check ground for signs of leakage
Main Control Valve Hoses Are
Leaking Tighten or replace main
control valve hoses (WP 0173).
Proceed to Test Step 5.
5. Visually inspect secondary
Secondary Steering Hoses and
steering hoses and tubes for Class
Tubes Are Not Leaking Proceed to
III leaks. Check ground for signs of
step 7.
leakage (WP 0173).
Secondary Steering Hoses and
Tubes Are Leaking Tighten or
replace secondary steering hoses and
tubes (WP 0173).
Proceed to Test Step 5.
6. Visually inspect steering cylinders
Steering Cylinders Are Not Leaking
for Class III leaks. Check ground
Replace hydraulic fluid (WP 0368).
for signs of leakage.
Proceed to Test Step 5.
Steering Cylinders Are Leaking
Repair or replace steering cylinders
(WP 0336).
Proceed to Test Step 5.
0146-3
