M1117 ASV Turret Field Maintenance Manual TM 9-2320-309-23 – PDF

Description

This is the complete Field Maintenance Manual for the M1117 Armored Security Vehicle (ASV) Turret, issued by the Department of the Army as TM 9-2320-309-23. It provides field-level maintenance, troubleshooting, removal/installation, and repair procedures for the M1117 ASV turret assembly and its integrated weapon station components. The manual supersedes TM 9-2320-309-24 and is dated 15 February 2011.

File Details

• Manual Type: Field Maintenance Manual
• Document Number: TM 9-2320-309-23
• Equipment: M1117 Armored Security Vehicle (ASV) Turret
• NSN: 2510-01-559-4843 (EIC: ALL)
• Publisher: Headquarters, Department of the Army
• Date of Issue: 15 February 2011
• Supersedes: TM 9-2320-309-24, 01 April 2003
• Language: English
• File Format: PDF
• Page Count: 804 pages (front matter, 106 work packages, index)
• Manufacturer of Equipment: Textron Marine & Land Systems, U.S.A.

Chapters Covered

• Chapter 1 – General Information, Equipment Description, and Theory of Operation
  • Field Maintenance General Information (WP 0001)
  • Equipment Description and Data (WP 0002)
  • Theory of Operation (WP 0003)
• Chapter 2 – Operator Instructions
  • General Maintenance Instructions (WP 0004)
  • Removal, Disassembly, Assembly, and Installation (WP 0005)
  • Cleaning, Inspection, Repair, and Painting (WP 0006)
  • Turn Turret Power On/Off (WP 0007)
• Chapter 3 – Troubleshooting Procedures
  • Troubleshooting Symptom Index – Turret Maintenance (WP 0008)
  • Gunner’s Seat – Does Not Lock Into Position (WP 0009)
  • Gunner’s Hatch – Does Not Lock in Closed Position (WP 0010)
  • Power Assist Traverse Mechanism – Does Not Manually Traverse (WP 0011)
  • Elevation Control – Does Not Elevate or Depress (WP 0012)
  • Gunner’s Sight – View Is Foggy (WP 0013)
  • MK-19 40-MM Machine Gun – Ammunition Binds in Ammunition Rack (WP 0014)
  • M48 .50-Cal. Machine Gun – Ammunition Feed Rollers Bind (WP 0015)
  • NBC System – Low or No Air Flow (WP 0016)
  • Grenades Fail to Launch (WP 0017)
  • NBC System – NBC Heater Blows Cold Air (WP 0018)
  • Turret – Electrical Systems Do Not Function (WP 0019)
  • Turret – Turret Power Switch Does Not Remain in On Position (WP 0020)
  • Spotlight – Does Not Illuminate With Turret Power Switch in On Position (WP 0021)
  • Sight – Power Does Not Operate With Turret Power Switch in On Position (WP 0022)
  • Exhaust Blower – Does Not Operate With Turret Power Switch in On Position (WP 0023)
  • Power Assist Traverse Mechanism – Does Not Power Traverse (WP 0024)
  • Gunner’s Control Panel – Firing Relay Indicator Lamp Illuminates (WP 0025)
  • Machine Gun Arming Switch – Does Not Remain in Selected Position (WP 0026)
  • Last Round Override Switch – Does Not Remain in Override Position (WP 0027)
  • Utility Light – Does Not Operate (WP 0028)
  • Interior Light – Does Not Operate (WP 0029)
  • MK-19 40-MM Machine Gun – Does Not Fire Electrically (WP 0030)
  • M48 .50-Cal. Machine Gun – Does Not Fire Electrically (WP 0031)
  • Lamp Test All Button – Does Not Operate (WP 0032)
  • Turret Control Panel – Does Not Lamp Test (WP 0033)
  • Traverse Control Panel – Does Not Lamp Test (WP 0034)
• Chapter 4 – Preventive Maintenance Checks and Services (PMCS)
  • Introduction – PMCS (WP 0035)
  • PMCS – Semi-Annual Checks and Lubrication Chart (WP 0036)
• Chapter 5 – Maintenance Instructions
  • Interior Light Removal/Installation (WP 0037)
  • Utility Light and Bulb Removal/Installation (WP 0038)
  • Spotlight Removal/Repair/Installation (WP 0039)
  • Spotlight Lamp Removal/Installation (WP 0040)
  • Slip Ring Assembly Removal/Installation (WP 0041)
  • Slip Ring Anchor Removal/Installation/Adjustment (WP 0042)
  • Exhaust Blower and Diode Assembly Removal/Installation (WP 0043)
  • Turret Control Panel and Mounting Bracket Removal/Installation (WP 0044)
  • Control Panel Lens Indicator Cap and Bulb Removal/Installation (WP 0045)
  • Gunner’s Control Panel Removal/Installation (WP 0046)
  • Traverse Control Panel Removal/Installation (WP 0047)
  • Power Relay Unit Removal/Installation (WP 0048)
  • Elevation Interrupter Removal/Installation (WP 0049)
  • Last Round Stop Switch Removal/Installation (WP 0050)
  • General Wire Harness Repair (WP 0051)
  • W1 Turret Main Wiring Harness Removal/Installation (WP 0052)
  • W2 Turret Wiring Harness Removal/Installation (WP 0053)
  • W4 Turret Wiring Harness Removal/Installation (WP 0054)
  • Gunner’s Hatch Switch Removal/Installation/Adjustment (WP 0055)
  • Turret Removal/Installation (WP 0056)
  • Turret Ring Gear Removal/Installation (WP 0057)
  • Turret Basket Removal/Installation (WP 0058)
  • Gunner’s Seat Removal/Repair/Installation (WP 0059)
  • Gunner’s Seat Height Lever Assembly Removal/Installation (WP 0060)
  • Gunner’s Hatch Removal/Repair/Installation (WP 0061)
  • Azimuth Indicator Removal/Installation (WP 0062)
  • Elevation Control Removal/Installation (WP 0063)
  • Equilibrator Removal/Repair/Installation (WP 0064)
  • Power Assist Traverse Mechanism Removal/Installation (WP 0065)
  • MK-19 40-MM Ready Rack Removal/Installation (WP 0066)
  • MK-19 40-MM Charger Removal/Repair/Installation (WP 0067)
  • M48 .50-Cal. Spent Cartridge System Removal/Installation (WP 0068)
  • M48 .50-Cal. Ammunition Feed Removal/Repair/Installation (WP 0069)
  • MK-19 40-MM Ammunition Feed and Flex Chute Removal/Repair/Installation (WP 0070)
  • Pads Removal/Installation (WP 0071)
  • General Armor Maintenance (WP 0072)
  • Exterior Turret Armor Removal/Installation (WP 0073)
  • Sight Cover Assembly Removal/Repair/Installation (WP 0074)
  • Mantlets Removal/Repair/Installation (WP 0075)
  • MK-19 40-MM Mantlet Seals Removal/Installation (WP 0076)
  • M48 .50-Cal. Mantlet Seals Removal/Installation (WP 0077)
  • M48 .50-Cal. Machine Gun Cradle Removal/Installation (WP 0078)
  • M48 .50-Cal. Machine Gun Front Mount Removal/Installation (WP 0079)
  • M48 .50-Cal. Machine Gun Rear Mount Removal/Repair/Installation (WP 0080)
  • M48 .50-Cal. Machine Gun Solenoid Removal/Repair/Installation (WP 0081)
  • Sight Assembly Removal/Repair/Installation (WP 0082)
  • Sight Mount Assembly Removal/Repair/Installation (WP 0083)
  • Sight Linkage Removal/Repair/Installation (WP 0084)
  • Purging and Charging Sights (WP 0085)
  • Major Boresighting (WP 0086)
  • MK-19 40-MM Machine Gun Range Drum Adjustment (WP 0087)
  • Sight Assembly Major Boresighting (WP 0088)
  • Turret Brace Removal/Repair/Installation (WP 0089)
  • Periscopes Removal/Installation (WP 0090)
  • Grenade Launcher Removal/Installation (WP 0091)
  • M240 5.56-MM Machine Gun Pintle Mount Removal/Repair/Installation (WP 0092)
  • CBR and NBC Equipment Maintenance (WP 0093)
  • NBC Heater Removal/Installation (WP 0094)
  • Preparation for Storage/Shipment (WP 0095)
  • Illustrated List of Manufactured Items (WP 0096)
  • Torque Limits (WP 0097)
  • Wiring Diagram (WP 0098)
• Chapter 6 – Supporting Information
  • References (WP 0099)
  • Maintenance Allocation Chart (MAC) – Introduction (WP 0100)
  • Maintenance Allocation Chart (MAC) (WP 0101)
  • Expendable and Durable Items List (WP 0102)
  • Mandatory Replacement Parts (WP 0103)
  • Turret Maintenance Troubleshooting Notes (WP 0104)
  • Engine Starting and Shutdown Procedures (WP 0105)
  • Wheel Chocks Installation/Removal (WP 0106)

This 804-page M1117 ASV Turret Field Maintenance Manual gives maintainers a complete, structured path through every turret system — from the weapon station and traverse/elevation controls to the slip ring, NBC system, sight assembly, and electrical harnesses. The troubleshooting work packages alone cover 27 distinct symptoms with step-by-step test-and-decision logic, while the maintenance instructions provide removal, repair, and installation procedures for every major component. Torque limits, wiring schematics, lubrication charts, and a Maintenance Allocation Chart are included to support field-level decisions without guesswork.

Who This Manual Is For

Field maintenance personnel assigned to M1117 ASV turret maintenance, wheeled vehicle mechanics, armament repairers, and unit-level maintainers who need to troubleshoot, service, or replace turret components. The procedures assume the user has completed M1117 turret training and has access to the required tools and test equipment listed in the Maintenance Allocation Chart.

What You Can Do With This Manual

• Diagnose electrical faults in the turret power, lighting, firing, and traverse circuits using connector-by-connector continuity and voltage tests.
• Troubleshoot and repair the MK-19 40mm and M48 .50-cal machine gun firing systems, including solenoid timing and adjustment procedures.
• Remove and install the turret from the vehicle hull, including ring gear, basket, slip ring, and power relay unit.
• Service the gunner’s seat, hatch, periscopes, sight assembly, and sight linkage.
• Perform preventive maintenance checks and lubrication on a semi-annual schedule.
• Adjust elevation controls, mantlet seals, and the equilibrator.
• Purge and charge the gunner’s day/night sight.
• Perform major boresighting of the sight assembly.
• Service the NBC heater and air flow system.
• Remove and install grenade launchers and test them with the launcher test unit.
• Reference torque limits for wet and dry fasteners, metric and SAE.
• Follow the turret wiring diagram for electrical troubleshooting.

Why This Manual Matters

The M1117 ASV turret is a tightly integrated weapon station — the sight, traverse, elevation, firing controls, and slip ring all interact. Guessing at a fault or using the wrong torque value can damage components or create a safety hazard. This manual provides the actual test sequences, connector pinouts, torque limits, and adjustment procedures specified by the Department of the Army for field-level maintenance. The troubleshooting section is symptom-based, so you start from what you observe and follow the decision tree to the faulty component without replacing parts at random.

Instant PDF Delivery

This is a downloadable PDF. After purchase, you receive the file immediately — no shipping, no waiting. The manual can be viewed on any device (computer, tablet, smartphone) and printed if you prefer a paper copy in the shop. The PDF retains the original page layout, illustrations, and tables.