Ltb 72.5-170d1 B Manual ^new^ -

Without the , technicians risk improper reassembly, incorrect torque settings, and voiding any remaining warranty or liability insurance.

Never operate the breaker if gas pressure is below the minimum "blocking" level.

1. REPORT DATE: 01-MAY-1985 2. REPORT TYPE: Technical Manual 3. DATES COVERED: N/A 4. TITLE AND SUBTITLE: Operator's Manual for Trailer, Low Bed, 72.5-Ton Capacity, M172A1 (NSN 2300-00-249-3604) 5. AUTHOR(S): Headquarters, Department of the Army 6. PERFORMING ORGANIZATION NAME AND ADDRESS: N/A 7. SPONSORING AGENCY NAME AND ADDRESS: N/A 8. SUPPLEMENTARY NOTES: N/A **9. ABSTRACT: This publication is an Operator's Manual for the M172A1 Low Bed Trailer. The manual provides instructions for operation, preventive maintenance, and troubleshooting for the trailer under normal and extreme conditions. The manual covers the M172A1 trailer which is used to transport heavy equipment such as tanks, artillery, and construction equipment. It includes information on payload securing, coupling and uncoupling, driving maneuvers, and emergency procedures. 10. SUBJECT TERMS: M172A1, Low Bed Trailer, Heavy Equipment Transporter, Operator's Manual, 72.5-Ton, M172, M172A1 **11. CONTRACT OR GRANT NUMBER: N/A 12. SPONSORING AGENCY REPORT NUMBER: TM 9-2330-284-10 **13. NUMBER OF PAGES: 60 **14. MONITORING AGENCY NAME & ADDRESS: N/A **15. SECURITY CLASSIFICATION: UNCLASSIFIED **16. DISTRIBUTION STATEMENT: Distribution authorized to U.S. Government agencies and their contractors for the transportation of heavy equipment. Other requests for this document shall be referred to the commander, U.S. Army Tank-Automotive and Materiel Command. **17. DISTRIBUTION STATEMENT: N/A **18. NUMBER OF PAGES: 60 **19. NAME OF PERFORMANCE ORGANIZATION: Headquarters, Department of the Army **20. REPORT NUMBER: TM 9-2330-284-10

Perform operational tests, including slow closing/opening, and check timing for opening and closing. 5. Maintenance and Inspection Schedule ltb 72.5-170d1 b manual

The full, official product description manual for the LTB 72.5-170D1/B is available for free in PDF format. It is often hosted on websites such as:

**Appendix F - EXPENDABLE/DURABLE SUPPLIES AND MATERIALS LIST" Section I. Introduction Section 3. Expendable/Durable Supplies and Materials List Section II. Ex repetitive loops and "ltb 70.5-170d1 b manual" errors. Section II. repetitive loops Section II. Expendable/D

OFFICIAL FILE COPY

Before operation, perform the preventive maintenance checks and services (PMCS) outlined in Table 2-2. Do the checks in the order listed. 2-5.2. During Operation PMCS During operation, monitor the trailer's performance. If any malfunction occurs, stop operation immediately and troubleshoot the problem. **2-5.3. After Operation PMC After operation PMCS (Continued) 2-5.4. Weekly PMCS : Perform weekly. 2-5.5. Maintenance Allocation Chart (MAC) : Maintenance procedures.

The LTB 72.5-170D1/B has a standardized mechanical construction shared across all voltage ratings.

** DISTRIBUTION:** Special

Note: Failure to follow this schedule voids the Type-2 corrosion protection warranty.

| Parameter | Value | | :--- | :--- | | | 72.5 kV / 145 kV / 170 kV | | Rated Frequency (Fr) | 50 / 60 Hz | | Rated Continuous Current (Ir) | Up to 3150 A standard / Up to 4000 A on request | | Rated Short-Circuit Breaking Current (Isc) | 40 kA (symmetrical) | | Short-Time Withstand Current | 40 kA (for 1 or 3 seconds, depending on version) | | Lightning Impulse Withstand Voltage | 325 kV (for 72.5 kV) / 650 kV (for 145 & 170 kV) | | Operating Mechanism Type | Spring-operated mechanism (e.g., BLK 222) | | Mechanical Endurance | Approximately 10,000 operations | | Standards | IEC & IEEE |

Chapter 2 OPERATING INSTRUCTIONS