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BAR TURNS COLOR.
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TM-5-2420-224-20-1 Tractor Wheeled 4x4 DED Small Emplacement Excavator (SEE) and High Mobility Material Handler (HMMH) Manual
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BOOM CYLINDER DRIFTS.
TM
5-2420-224-20-1
Table 3-5. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
BACKHOE (SEE)
123. ALL BACKHOE FUNCTIONS SLUGGISH.
Step 1. Check for loose and damaged hydraulic lines.
If hydraulic lines are loose or damaged, tighten loose
connections or replace hydraulic lines (pages 4-590, 4-592,
4-594, 4-596, 4-598, 4-600, 4-602, 4-604, 4-606, 4-608, 4-610,
4-612, 4-614, 4-616, 4-618).
If hydraulic lines are not loose or damaged, go to step 2.
Step 2. Check engine rpm on tachometer. Engine speed should be 2000 rpm.
If engine speed is not 2000 rpm, adjust air cylinder (page 4-76).
If engine speed is 2000 rpm, notify direct support maintenance.
124. BOOM CYLINDER DRIFTS.
NOTE
Steps 1 and 2 are the same for both boom cylinders.
Step 1. Check for loose and damaged hydraulic lines.
If hydraulic lines are loose or damaged, tighten loose
connections or replace hydraulic lines (page 4-610).
If hydraulic lines are not loose or damaged, go to step 2.
Step 2. Check for damaged boom cylinder packing as follows:
a. Start engine.
3-298

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