Front Matter

TM 9-2320-363-34-1

Volume No. 1

TECHNICAL MANUAL TABLE OF CONTENTS i

HOW TO USE THIS

DIRECT AND GENERAL SUPPORT                                  MANUAL                      v

    MAINTENANCE MANUAL
            FOR                                             TROUBLESHOOTING           2-2

POWER PACKAGE TRUCK, TRACTOR, LINE HAUL MAINTENANCE 3-1

52,000 GVWR, 6 X 4, M915A2 (NSN 2320-01-272-5029) ELECTRICAL SYSTEM MAINTENANCE 4-1

TRUCK, TRACTOR, LIGHT EQUIPMENT FRONT AXLE MAINTENANCE 5-1 TRANSPORTER (LET) 68,000 GVWR, 6 X 6, W/WINCH, M916A1 REAR AXLE MAINTENANCE 6-1 (NSN 2320-01-272-5028) STEERING MAINTENANCE 7-1

FRAME AND TOWING ATTACHMENTS MAINTENANCE 8-1

SUSPENSION MAINTENANCE 9-1

BODY, CAR, HOOD, AND HULL MAINTENANCE 10-1

WINCH MAINTENANCE 11-1

Approved for public release; distribution is unlimited. INDEX Index-1

HEADQUARTERS, DEPARTMENT OF THE ARMY JUNE 1992

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CHANGE HEADQUARTERS NO. 1 DEPARTMENT OF THE ARMY Washington D.C., 30 December 1997

DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR

TRUCK, TRACTOR, LINE HAUL: 52,000 GVWR, 6 X 4, M915A2 (NSN 2320-01-272-5029) TRUCK TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET) 68,000 GVWR, 6 X 6, W/WINCH, M916A1 (NSN 2320-01-272-5028) TRUCK TRACTOR LIGHT EQUIPMENT TRANSPORTER (LET) 68,000 GVWR, 6 X 6, W/WINCH, M916A2 (NSN 2320-01-431-1163) TRUCK, DUMP, HEAVY, CHASSIS 68,000 GVWR, 6 X 6,14 CU YD, ON-OFF HIGHWAY M917A1 (NSN 3805-01-431-1165) M917A1 W/MCS (NSN 3805-01-432-8249) VOLUME 1 OF 2 Approved for Public Release; Distribution is Unlimited

TM 9-2320-363-34-1, dated 16 June 1992, is changed as follows:

1. The manual title is changed to read as shown above.

2. Remove old pages and insert new pages.

3. New or changed material is indicated by a vertical bar in the margin.

Remove Pages Insert Pages c/(d Blank) i thru vi i thru vi 1-7 thru 1-3/(1-4 Blank) 1- 1 thru 1-3/(1-4 Blank) 2- 1 thru 2-4 2-1 thru 2-4 2-7thru2-72 2-7 thru 2-12 2- 19 and 2-20 2-19 and 2-20 2-23 thru 2-26 2-23 thru 2-26 2-28.7 thru 2-28.9/(2-28.10 Blank) 2-33 thru 2-36 2-33 thru 2-36 3-1 thru 3-6 3-1 thru 3-6 3-43 thru 3-46 3-43 thru 3-46 3-51 and 3-52 3-57 and 3-52 3-61 and 3-62 3-61 and 3-62 3-66.1 thru 3-66.5/(3-66.6 Blank) 3-67 thru 3-70 3-67 thru 3-70 3-70.7 thru 3-70.4 3-79 and 3-80 3-79 and 3-80 3-97 and 3-92 3-91 and 3-92 3-113 and 3-114 3-113 and 3-114 3-183 and 3-184 3-183 and 3-184

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3-197 and 3-198 3-197 and 3-198 3-233 thru 3-236 3-233 thru 3-236 3-239 thru 3-246 3-239 thru 3-246 3-249 thru 3-256 3-249 thru 3-256 3-263 thru 3-270 3-263 thru 3-268 3-269 and 3-269.0 3-269.1 thru 3-269.4 3-269.5 and 3-270 3-273 thru 3-277/(3-278 Blank) 3-273 thru 3-277/(3-278 Blank) 4-1 and 4-2 4-1 and 4-2 4-7 and 4-8 4-7 and 4-7.0 4-7.1 and 4-8 4-9 thru 4-12 4-9 thru 4-12 4-15 and 4-76 4-15 and 4-16 4-17 and 4-18 4-17 and 4-17.0 4-17.1 and 4-18 4-19 and 4-20 4-19 and 4-19.0 4-19.1 and 4-20 4-23 and 4-24 4-23 and 4-24 4-31 and 4-32 4-31 and 4-32 4-35 thru 4-38 4-35 thru 4-38 4-39 and 4-40 4-39 and 4-39.0 4-39.1 and 4-40 4-43 and 4-44 4-43 and 4-44 4-45 and 4-46 4-45 and 4-45.0 4-45.1 and 4-46 4-47 and 4-48 4-47 and 4-47.0 4-47.1 thru 4-47.10 4-47.11 and 4-48 5-1 and 5-2 5-1 and 5-2 5-5 thru 5-10 5-5 thru 5-10 5-13 thru 5-16 5-13 thru 5-16 5-29 and 5-30 5-29 and 5-30 5-33 and 5-34 5-33 and 5-34 5-37 thru 5-40 5-37 thru 5-40 6-1 and 6-2 6-1 and 6-2 6-5 thru 6-8 6-5 thru 6-8 6-11 and 6-12 6-11 and 6-12 6-15 and 6-16 6-15 and 6-16 6-21 and 6-22 6-21 and 6-22 6-27 thru 6-31/(6-32 Blank) 6-27 thru 6-3 1/(6-32 Blank) 7-1 thru 7-6 7-1 thru 7-6 8-1 and 8-2 8-1 and 8-2 8- 19 thru 8-24 8-19 thru 8-24 8-37 and 8-38 8-37 and 8-38 8-53 and 8-54 8-53 and 8-54 8-67 and 8-68 8-67 and 8-68 9-1 thru 9-6 9-1 thru 9-6 9-13 thru 9-22 9-13 thru 9-22 9-27 thru 9-32 9-27 thru 9-34 10-1 and 10-2 10-1 and 10-2 10-35 and 10-36 10-35 and 10-36

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10-39 and 10-40 10-39 and 10-39.0 10-39.1 and 10-39.2 10-39.3 and 10-40 10-41 and 10-42 10-41 and 10-42 10-47 and 10-48 10-47 and 10-48 10-75 and 10-76 10-75 and 10-76 11-1 and 11-2 11-1 and 11-2 11-7 thru 11-10 11-7 thru 11-10 11-15 and 11-16 11-75 and 11-16 11-19 and 11-20 77-19 and 11-20 11-25 and 11-26 11-25 and 11-26 11-29 and 11-30 11-29 and 11-30 11-33 and 11-34 11-33 and 11-34 11-39 thru 11-42 11-39 thru 11-42 11.1-1 thru 11.1-25/(11.1-26Blank) Index- 1 thru Index- 7/(lndex-8 Blank) Index- 1 thru Index-8

4. File this change sheet in front of the publication for reference purposes.

By Order of the Secretary of the Army:

DENNIS J. REIMER General, United States Army Official: Chief of Staff

JOEL B. HUDSON Administrative Assistant to the Secretary of the Amy 04432

Distribution: To be distributed in accordance with IDN number 380905, Direct Support and General Support maintenance requirements for TM9-2320-363-34-1.

TM 9-2320 -363-34-1

CARBON MONOXIDE POISONING CAN BE DEADLY

CARBON MONOXIDE IS A COLORLESS, ODORLESS, DEADLY POISONOUS GAS, WHICH, WHEN BREATHED, DEPRIVES THE BODY OF OXYGEN AND CAUSES SUFFOCATION. EXPOSURE TO AIR CONTAMINATED WITH CARBON MONOXIDE PRODUCES SYMPTOMS OF HEADACHE, DIZZINESS, LOSS OF MUSCULAR CONTROL, APPARENT DROWSINESS, OR COMA. PERMANENT BRAIN DAMAGE OR DEATH CAN RESULT FROM SEVERE EXPOSURE.

CARBON MONOXIDE OCCURS IN THE EXHAUST FUMES OF FUEL-BURNING HEATERS AND INTERNAL-COMBUSTION ENGINES AND BECOMES DANGEROUSLY CONCENTRATED UNDER CONDITIONS OF INADEQUATE VENTILATION. THE FOLLOWING PRECAUTIONS MUST BE OBSERVED TO ENSURE THE SAFETY OF PERSONNEL WHENEVER THE PERSONNEL HEATER, MAIN, OR AUXILIARY ENGINE OF ANY VEHICLE IS OPERATED FOR MAINTENANCE PURPOSES OR TACTICAL USE:

1. DO NOT operate engine of vehicle in an enclosed area unless it is ADEQUATELY VENTILATED.

2. DO NOT idle engine for long periods without maintaining ADEQUATE VENTILATION in the personnel compartments.

3. DO NOT drive any vehicle with inspection plates, cover plates, or engine compartment doors removed unless necessary for maintenance purposes.

4. BE ALERT at all times during vehicle operation for exhaust odors and exposure symptoms. If either is present, IMMEDIATELY VENTILATE personnel compartments. If symptoms persist, remove affected personnel from vehicle and treat as follows: expose to fresh air; keep warm, DO NOT PERMIT EXERCISE; if necessary, administer artificial respiration (see FM 21-11),

THE BEST DEFENSE AGAINST CARBON MONOXIDE POISONING IS ADEQUATE VENTILATION.

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TM 9-2320 -363-34-1

COMPRESSED AIR

To prevent injury, compressed air will not exceed 30 psi (207 kPa). Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc.).

Drycleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and gloves and use only in a well-ventilated area. Avoid contact with skin, eyes, and clothes and do not breathe vapors. Do not use near open flame or excessive heat. o o o The flash point is 100 -138°F (38 -50 C). If you become dizzy while using cleaning solvent, get fresh air immediately and get medical aid, If contact with eyes is made, wash your eyes with water and get medical aid immediately.

Adhesives, solvents, and sealing compounds can burn easily, can give off harmful vapors, and are harmful to skin and clothing. To avoid injury or death, keep away from open fire and use in well-ventilated area. If adhesive, solvent, or sealing compound gets on skin or clothing, wash immediately with soap and water.

Make sure lifting device is securely fastened and weight being lifted does not exceed capacity of lifting device. Failure to do so may cause personal injury.

Do not disconnect any air system lines or fittings unless vehicle engine is shut off and air system pressure is relieved. To do so could result in serious injury to personnel.

Spilled hydraulic fluid is very slippery. Wipe up any spilled fluid immediately. Failure to do so could result in serious injury to personnel.

b

When servicing this vehicle, performing maintenance, or disposing of materials such as engine coolant, transmission fluid, lubricants, battery acids or batteries and CARC paint, consult your Unit/Local Hazardous Waste Disposal Center or safety office for local regulatory guidance. If further information is needed, please contact the Army Environmental Hotline at 1-800-872-3845.

Use care to prevent refrigerant from touching your skin or eyes, because liquid refrigerant, when exposed to air, quickly evaporates and will freeze skin or eye tissue. Serious injury or blindness could result if you come into contact with liquid refrigerant.

Refrigerant R-134a air conditioning systems should not be pressure tested or leak tested with compressed air. Combustible mixtures of air and R-134a may form, resulting in a fire or explosion, which could cause personnel injury.

Do not remove air conditioner compressor oil fill plug without first recovering the system. Failure to recover the system could cause uncontrolled release of high-pressure refrigerant, which can freeze skin and eye tissue causing serious injury or blindness.

Change 1 c/(d Blank)

Technical Manual HEADQUARTERS No. 9-2320-363-34-1 DEPARTMENT OF THE ARMY Washington D.C., 16 June 1992

DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL

FOR TRUCK, TRACTOR, LINE HAUL: 52,000 GVWR, 6 X 4, M915A2 (NSN 2320-01-272-5029)

TRUCK TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET) 68,000 GVWR, 6 X 6, W/WINCH, M916A1 (NSN 2320-01-272-5028)

TRUCK TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET) 68,000 GVWR, 6 X 6, W/WINCH, M916A2 (NSN 2320-01-431-1163) TRUCK, DUMP, HEAVY, CHASSIS 68,000 GVWR, 6 X 6,14 CU YD, ON-OFF HIGHWAY M917A1 (NSN 3805-01-431-1165) M917A1 W/MCS (NSN 3805-01-432-8249)

VOLUME 1 OF 2

REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can help improve this manual. If you find any mistakes or if you know of a way to improve the procedures, please let us know. Mail your letter, DA Form 2028 (Recommended Changes to Publications and Blank Forms), or DA Form 2028-2 located at the back of this manual direct to: Commander, US Army Tank-automotive and Armaments Command, ATTN: AMSTA-AC-NML, Rock Island, IL 61299-7630. A reply will be furnished to you. You may also provide DA Form 2028-2 information to TACOM via datafax or e-mail. TACOM’s datafax number for AMSTA-AC-NML is DSN 793-0726 or Commercial (309) 782-0726 and the e-mail address is: amsta-ac-nml@ria- emh2.army.mil.

Page VOLUME 1

CHAPTER 1 INTRODUCTION

Section I         General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1-1
Section II        Equipment Description and Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .             1-3
Section III       Principles of Operation . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1-3

CHAPTER 2 DIRECT AND GENERAL SUPPORT MAINTENANCE INSTRUCTIONS