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PRESSURE WILL NOT RETURN TO ORIGINAL SETTING AFTER DISCHARGE VALVES ARE RE-OPENED
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TM-5-4210-233-14P-1 Twin Agent 4x4 Firefighting Truck Model No. CM-KFT-B Manual
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NO SWING OPERATION IN EITHER DIRECTION
TM 5-4210-233-14&P-1 Table 5-2.  Direct Support Troubleshooting - Continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION HYDRAULIC SYSTEM - Continued 2 AERIAL CONTROLS ARE INOPERATIVE Diverter valve malfunctioning. Replace diverter valve (see para 4-193). 3 LADDER RAISES OR EXTENDS SLOWLY OR ERRATICALLY Cylinder piston seals leaking. Remove hoist and/or extension cylinders and replace piston seals, (see para 6-70 and 6-77). 4 ALL LADDER OPERATIONS ERRATIC OR SLOW Refer to hydraulic system component testing (see para 5-50) to test pressure reducing (de-stroking) valve. 5 LADDER DOES NOT OPERATE Step 1.  Diverter valve has not shifted to aerial position. Replace diverter valve (see para 4-193). Step 2.  Ladder control valve malfunctioning. Replace control valve (see para 5-56). 6 LADDER WILL NOT LOWER Ladder control valve has failed (raise or lower). Replace ladder control valve (see para 5-56). 7 NO SWING OPERATION IN EITHER DIRECTION Step 1.  Swing brake not releasing properly. Replace or repair as necessary (see para 5-54 and 6-73). Step 2.  Worn or defective swing motor. Replace or repair as necessary (see para 5-62 and 6-76). Step 3.  Internal damage to planetary speed reducer. Repair or replace as necessary (see para 5-53 or 6-72). 5-24

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