4. Boom Locking Pin Cylinders Not Working

Table 8. Tophandler System Troubleshooting Procedures (Non-Error Code). - TM-10-3930-675-20-1_113

TM-10-3930-675-20-1 Rough Terrain Container Handler (RTCH): RT 240; 53 000 Lb Capacity; 4x4 Manual
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TM 10-3930-675-20-1 0006 00-24 TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED 0006 00 Table 7. Boom System Troubleshooting Procedures (Non-Error Code) - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 4. Boom Locking Pin Cylinders Not Working. NOTE If boom locking pin cylinders will not function, raise boom folding cylinders to release pressure on locking cylinder shafts. 1. Inspect boom locking pin cylinders for damage and signs of leakage. Notify DS Maintenance to replace damaged or leaking boom locking pin cylinder(s). 2. Inspect boom folding control valve for damage and signs of leakage. Replace damaged or leaking boom folding control valve (WP 0170 00). 3. Check boom locking pin cylinder hydraulic lines and hoses for damage and signs of leakage. a. Tighten loose connections. b. Replace damaged or leaking lines and hoses (WP 0180 00). 4. Check cab position proximity switches for obstructions, damage, and proper adjustment. Clean, replace or adjust cab position proximity switches as required (WP 0075 00). 5. Test boom system operating pressure (WP 0186 00, test point no. 11). Operating pressure should be 3045 psi (210 bar). a. If operating pressure is as specified, replace over-center control valve (WP 0180 00). b. Notify DS Maintenance to replace boom and brake system hydraulic pump if pressure is not as specified.

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