TM 5-2420-231-23-1
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Table 1. Backhoe Swing Does Not Operate Correctly - Continued.
074
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 2. Inspect Backhoe Swing
Backhoe Swing Does Not
Cylinder Hydraulic Hoses.
Operate Correctly -
Continued
Inspect backhoe swing cylinder
Backhoe Swing Cylinder Hydraulic
Hoses OK - Proceed to Test Step 3.
hydraulic hoses (Figure 3, Items 1
and 2) (WP 0240) for kinks, damage,
Backhoe Swing Cylinder Hydraulic
and Class III leaks.
Hoses Leaking, Kinked, or Damaged
- Replace backhoe swing cylinder
hydraulic hoses (WP 0240).
Proceed to Test Step 6.
Test Step 3. Inspect Backhoe Swing
Cylinders.
1. Inspect left backhoe swing cylinder
Left Backhoe Swing Cylinder OK -
(Figure 3, Item 3) (WP 0273) for
Proceed to step 2.
damage and Class III leaks.
Left Backhoe Swing Cylinder
Damaged or Leaking From Rod or
Cylinder - Replace left backhoe swing
cylinder (WP 0273).
Proceed to Test Step 6.
2. Inspect right backhoe swing cylin-
Right Backhoe Swing Cylinder OK -
der (Figure 3, Item 4) (WP 0273)
Replace backhoe control valve
for damage and Class III leaks.
assembly (WP 0263).
Right Backhoe Swing Cylinder
Damaged or Leaking From Rod or
Cylinder - Replace right backhoe swing
cylinder (WP 0273).
Proceed to Test Step 6.
Figure 3. Backhoe Swing Hydraulic Hoses and Cylinders.
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