TM 1-1740-204-13&P TECHNICAL MANUAL OPERATOR'S, …

1 TM 1-1740-204-13&PTECHNICAL MANUALOPERATOR'S, aviation unit ,AND INTERMEDIATEMAINTENANCE MANUAL (INCLUDING REPAIR PARTSAND SPECIAL TOOLS LIST)FORTRUCK, HAND(HIGH PRESSURE NITROGEN SERVICING CART)P/N FPNC-01 NSN: 1740-01-327-6831 DISTRIBUTION STATEMENT A: Approved for public release; distribution , Department of the Army31 December 1996TM 1-1740-204-13&PWARNINGs and CAUTIONs PageA WARNING denotes a hazard. A WARNING highlights a procedure, practice, etc., which, if not correctly followed,could result in personnel injury or loss of life. Do not proceed beyond a WARNING until the indicated conditions are fullyunderstood and CAUTION denotes a hazard.

2 It calls attention to an operating procedure, practice, or the like, which, if not correctlyperformed or adhered to, could result in damage to or destruction of part of or all of the product. Do not proceed beyonda CAUTION until the indicated conditions are fully understood and AIR OR GAS CAN CAUSE SEVERE INJURY OR DEATH IF MISUSED. Read andunderstand these and manufacturer's operating instructions prior to operating the not remove, tamper with, or in any way disable installed pressure relief wear safety or disconnect nitrogen tanks before maintenance.

3 Never disconnect a pressurized booster panel assembly weighs approximately 100 lb. This requires a two man lift to removefrom the cart chassis. Protect the hands from being pinched with confirm that the pressure produced by the High Pressure Nitrogen Servicing Cart doesnot exceed the servicing pressures specified in the applicable aircraft TECHNICAL the correct tire inflation pressure in the aircraft MANUAL before 1-1740-204-13&PWARNINGUse nitrogen from approved nitrogen tanks only for the supply gas. If shop air is used as thesupply in a high pressure system, an explosion could and shut down the high pressure nitrogen servicing cart prior to any repair actionincluding the tightening of the direction of the arrow stamped on the check valve before replacement.

4 An incorrectlyinstalled check valve may cause the connector hose to whip violently when used with only onetank of nitrogen and possibly cause serious injury to the all four check valves. Remove and inspect only one check valve at a time on the boosterpump to ensure proper reassembly. Improper assembly of the check valves or the swapping ofthe inlet and outlet check valves can cause very high pressures to be trapped in the boosterpump. These pressures can be released suddenly and unexpectedly with any only a 6 point 11/16 inch socket to remove the nipple connector of the tank connectorassembly.

5 An open end wrench or 12 point socket will deform and damage this tanks must be secured tightly to the hand truck's saddles. Loose or unsecured tankretention straps will allow the tanks to shift during towing. This could damage the tankconnectors, hoses or tow maximum safe towing speed for the High Pressure Nitrogen Servicing Cart is 15 miles perhour. Do not exceed this 1-1740-204-13&PCAUTIONDo not stand on any tubing or pneumatic assemblies or place any pressure on any of thepneumatic assemblies of the panel while positioning, moving and tilting the High PressureNitrogen Servicing of an air line lubricator of any kind is not recommended.

6 Lubricating oil leaking into thecompressor chamber may. cause pump valve disassembly of any Cart components, relieve all air pressures in the affected section priorto removing or tightening a fitting to the high pressure filter, hold the filter body hex with awrench adjacent the fitting. Tightening the filter across its body may stress the filter housingand cause leaks to develop. Extreme caution should be used to prevent contaminants such asold Teflon tape, sealant, dirt or any other matter from falling into the tubing going to the boosterpump.

7 This will cause booster pump NOT force-tighten control valves; damage will occur to the soft needle seat of the that shop air supplies are within the limits (as specified in paragraph 1-7 Pneumatic InputRequirements) or damage may sure grease, seals and bearings are in good condition before not set the high pressure relief valve for less than 2,300 psi since fully charged nitrogen tanksmay be pressurized to that 1-1740-204-13&PCAUTIONDo not exceed 30 inch pounds of torque when connecting high pressure inflation chuckto any charging 1-1740-204-13&PTECHNICAL MANUALH eadquartersNo.

8 1-1740-204-13&PDepartment of the ArmyWashington, DC. 31 December 1996 TECHNICAL MANUALOPERATOR'S, aviation unit ,AND INTERMEDIATEMAINTENANCE MANUAL (INCLUDING REPAIR PARTSAND SPECIAL TOOLS LIST)FORTRUCK, HAND(HIGH PRESSURE NITROGEN SERVICING CART)P/N FPNC-01(NSN: 1740-01-327-6831)REPORTING OF ERRORS AND RECOMMENDING IMPROVEMENTS Youcan help improve this MANUAL . If you find any mistakes, or if you know away to improve the procedures, please let us know. Mail your letter, DAForm 2028 (recommended Changes to Publications and Blank Forms), orDA Form 2028-2 located in the back of this MANUAL , directly to :Commander, US.

9 Army aviation and Troop Command, ATTN: AMSAT-I-MP, 4300 Goodfellow Boulevard, St. Louis, MO 63120-1798. A reply will befurnished to STATEMENT A: Approved for public release; distribution OF CONTENTSPageWarning and First Aid Data PageCHAPTER 1 INTRODUCTION ..1-1 Section IGeneral IIEquipment Description and IIIT echnical Principles of Operation ..1-9 CHAPTER 2 OPERATING IDescription and Use of Operator's Controls and Indicators ..2-1 Section IIPreventive Maintenance Checks and Services (PMCS)..2-6 Section IIIO perations under Usual Conditions ..2-11 Section IVOperations under Unusual 1-1740-204-13&PCHAPTER 3 aviation unit MAINTENANCE - MAINTENANCE IRepair Parts, Special Tools, TMDE, and Support IIService Upon Receipt.

10 3-2 Section IIIP reventive Maintenance Checks (PMCS) ..3-3 Section IVTroubleshooting ..3-4 Section VMaintenance VIPreparation for Storage or Shipment ..3-42 CHAPTER 4 aviation INTERMEDIATE MAINTENANCE - MAINTENANCEINSTRUCTIONS ..4-1 Section IRepair Parts, Special Tools, TMDE, and Support IIService Upon Receipt ..4-2 Section IIIP reventive Maintenance Checks (PMCS) ..4-3 Section IVTroubleshooting ..4-4 Section VMaintenance VIPreparation for Storage or Shipment ..4-17 APPENDIX AREFERENCES ..A-1 APPENDIX BMAINTENANCE ALLOCATION CHART (MAC)..B-1 APPENDIX CREPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL).