M977 Series HEMTT 8×8 Direct/General Support Maintenance Manual Volume 2 (TM 9-2320-279-34-2) – Axles, Brakes, Steering, Frame, Suspension, Cab, Winch PDF

Description

M977 Series HEMTT 8×8 Direct/General Support Maintenance Manual Volume 2 (TM 9-2320-279-34-2)

This is Volume 2 of the Direct Support and General Support Maintenance Instructions for the M977 Series 8×8 Heavy Expanded Mobility Tactical Truck (HEMTT), technical manual number TM 9-2320-279-34-2. It applies to the M977 cargo truck with and without winch, the M983 tractor, the M984 wrecker-recovery truck, and the M985 cargo truck, including their A2 and A2R1 variants. The manual was originally issued 3 June 1987 and is presented here updated through Change 6, dated 1 July 2005, for a total of 660 pages.

File Details

• Manual type: Direct Support and General Support Maintenance Manual (Volume 2)
• Technical manual number: TM 9-2320-279-34-2
• Brand/Program: U.S. Army HEMTT (M977 Series)
• Language: English
• Page count: 660 pages
• File format: PDF
• Original date: 3 June 1987
• Latest revision: Change 6, 1 July 2005

IMAGES PREVIEW

Chapters Covered

This M977 Series HEMTT maintenance manual Volume 2 picks up at Chapter 10 and carries through Chapter 16, covering the running gear, structural, and auxiliary systems of the truck:

• Chapter 10 – Axles No. 3 and No. 4 Maintenance
  • Section I Introduction
  • Section II Axle Assemblies
  • Section III Differential Carriers
• Chapter 11 – Brake System Maintenance
  • Section I Introduction
  • Section II Service Brakes
  • Section III Air Brake System
  • Section IV Air Compressor
  • Section V Trailer Brake System
• Chapter 12 – Steering System Maintenance
  • Section I Introduction
  • Section II Steering Linkage and Gearbox
  • Section III Steering Gear and Slave
  • Section IV Steering Pump
  • Section V Steering System Adjustments
• Chapter 13 – Frame Maintenance
  • Section I Introduction
  • Section II Frame Assembly
  • Section III Fifth Wheel Assembly
• Chapter 14 – Suspension Maintenance
  • Section I Introduction
  • Section II Spring Assembly
  • Section III Lateral Torque Rod and Equalizer Beams
• Chapter 15 – Cab and Body Maintenance
  • Section I Introduction
  • Section II Cab Assembly
  • Section III Pump Module, Tank, and Cargo Bodies
• Chapter 16 – Winch Maintenance
  • Section I Introduction
  • Section II Self-Recovery Winch
  • Section III Heavy-Duty Winch

Together these seven chapters give a support-level mechanic everything needed to work on the HEMTT’s drivetrain and body structure below the transmission and engine: axle and differential carrier overhaul, full air brake and trailer brake system work, steering linkage and hydraulic steering pump service, frame and fifth wheel repair, leaf spring and torque rod suspension work, cab removal and cargo/tank/pump body service, and both the self-recovery and heavy-duty winch systems.

What This HEMTT Maintenance Manual Volume 2 Covers On The Job

Every procedure in this M977 Series HEMTT maintenance manual is written to Direct Support and General Support level, meaning it goes beyond basic operator checks into component removal, disassembly, inspection, repair, and reassembly. Step-by-step instructions are paired with torque specifications throughout — for example axle carrier nuts, differential pinion locknuts, steering yoke nuts, and frame fifth-wheel hardware are all called out with exact lb-ft and N•m torque ranges, along with the specific sockets, adapters, and torque multipliers required. Using the correct sequence and torque values from this manual matters directly for safety on a vehicle of this size and load rating; under-torquing steering and axle hardware, or skipping the specified air brake adjustment steps, can lead to component failure in service.

This manual is delivered as an instant PDF download — there is no physical shipping and no waiting. Once payment is confirmed you can download the M977 Series HEMTT Maintenance Manual Volume 2 immediately, view it on a laptop, tablet, or phone, and print any page or section you need in the shop.