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Table 4-2. Unit Troubleshooting-continued -706880186
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TM-5-4210-233-14-P-1 Firfighting Truck 100 Ft. Aerial Ladder 1000 GPM Manual
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Table 4-2. Unit Troubleshooting-continued -706880188
TM 5-4210-233-14&P-1
Table 4-2. Unit Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
HYDRAULIC SYSTEM
1
P. T. O. WILL NOT ENGAGE
Step 1. Check that AERIAL MASTER switch is energized.
Engage AERIAL MASTER switch.
Step 2. Check that AERIAL P. T. O. switch is engaged.
Engage AERIAL P. T. O. switch.
Step 3. Check that transmission range selector is in N (neutral).
Engage N (neutral) with range selector.
Step 4. Check that parking brake is engaged.
Engage parking brake.
Step 5. Check engine speed on tachometer.
Ensure engine speed is below 1 000 RPM.
Step 6. Check for malfunctioning high idle interlock system (DDEC).
See electrical troubleshooting procedures. If problem cannot be corrected, refer to Direct
Support maintenance level.
2
OUTRIGGERS WILL NOT OPERATE
Step 1. Check that P. T. O. is engaged.
Engage P. T. O.
Step 2. Check position of DIVERTER VALVE OUTRIGGERIAERIAL switch.
Select OUTRIGGER position with DIVERTER VALVE OUTRIGGER/AERIAL switch.
Step 3. Check position of manual override.
Ensure maual override is in neutral position and handle moves freely.
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