Maintenance Engineer
Resume:
OPERATOR S MANUAL
FOR
TRUCK, TRACTOR, LINE HAUL:
**,*** ****, * * 4, M915A2
(NSN 232*-**-***-****)
TRUCK, TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET):
**,*** ****, * * 6, W/WINCH, M916A1
(NSN 232*-**-***-****)
TRUCK, TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET):
68,000 GVWR, 6 X 6, W/WINCH, M916A2
(NSN 232*-**-***-****)
TRUCK, DUMP, HEAVY, CHASSIS:
68,000 GVWR, 6 X 6, 14 CU YD, ON-OFF HIGHWAY
M917A1 (NSN 380*-**-***-****)
M917A1 W/MCS (NSN 380*-**-***-****)
Approved for public release; distribution is unlimited
HEADQUARTERS, DEPARTMENT OF THE ARMY
DECEMBER 1997
TECHNICAL MANUAL HEADQUARTERS
TM 9-232*-***-** * DEPARTMENT OF THE ARMY
Washington, D.C., 30 December 1997
OPERATOR S MANUAL
FOR
TRUCK, TRACTOR, LINE HAUL:
52,000 GVWR, 6 X 4, M915A2
(NSN 232*-**-***-****)
TRUCK, TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET):
68,000 GVWR, 6 X 6, W/WINCH, M916A1
(NSN 232*-**-***-****)
TRUCK, TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET):
68,000 GVWR, 6 X 6, W/WINCH, M916A2
(NSN 232*-**-***-****)
TRUCK, DUMP, HEAVY, CHASSIS:
68,000 GVWR, 6 X 6, 14 CU YD, ON-OFF HIGHWAY
M917A1 (NSN 380*-**-***-****)
M917A1 W/MCS (NSN 380*-**-***-****)
Approved for Public Release; Distribution is Unlimited
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 in the back of this manual, direct to:
Commander, U.S. Army Tank-automotive and Armaments Command,
ATTN: AMSTA-AC-NML, Rock Island, Illinois 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.
l TACOM s datafax number for AMSTA-AC-NML is: DSN 793-
0726 or Commercial 309-***-****
l TACOM s e-mail address is: abpuhs@r.postjobfree.com
* This manual supersedes TM 9-232*-***-**, 5 Nov 1991 and all changes.
i
TABLE OF CONTENTS
Page
CHAPTER 1 INTRODUCTION.. 1-1
Section I. General Information.. 1-1
Section II. Equipment Description and Data.. 1-5
Section III. Principles of Operation.. 1-25
CHAPTER 2 OPERATING INSTRUCTIONS 2-1
Section I. Description and Use of Operator s Controls
and Indicators 2-1
Section II. Preventive Maintenance Checks and
Services (PMCS). 2-33
Section Ill. Operation Under Usual Conditions 2-81
Section IV. Operation Under Unusual Conditions 2-121
CHAPTER 3 OPERATOR MAINTENANCE 3-1
Lubrication Instructions
Section I. 3-1
Section II. Operator Troubleshooting Procedures.. 3-3
Operator Maintenance..
Section III. 3-17
REFERENCES..
APPENDIX A A-1
APPENDIX B COMPONENTS OF END ITEM AND
BASIC ISSUE ITEMS LISTS.. B-1
ADDITIONAL AUTHORIZATION LIST..
APPENDIX C C-1
APPENDIX D EXPENDABLE AND DURABLE ITEMS LIST.. D-1
APPENDIX E STOWAGE AND DECAL, DATA PLATE, AND
STENCIL GUIDE.. E-1
APPENDIX F LUBRICATION INSTRUCTIONS F-1
INDEX Index 1
ii
HOW TO USE THIS MANUAL
This manual is designed to help you operate and maintain the M915 Family of
Vehicles.
FEATURES OF THIS MANUAL:
l A table of contents is provided at the beginning of this manual. An index of all
paragraphs contained within a section is found at the beginning of each section.
l WARNINGs, CAUTIONs, NOTEs, subject headings, and other important infor-
mation are highlighted in BOLD print as a visual aid.
A WARNING indicates a hazard which can result in death or
serious injury.
A CAUTION is a reminder of safety practices or directs attention
to usage practices that may result in damage to equipment.
NOTE
A NOTE is a statement containing information that will make the
procedure easier to perform.
l Statements and words of particular importance are printed in CAPITAL LET-
TERS to create emphasis.
l Instructions are located with illustrations that show the specific task on which the
operator is working.
l Dashed leader lines used in illustrations indicate that called out items are not vis-
ible (i.e., they are located within the structure). Dashed leader lines in the Lubri-
cation Chart indicate that lubrication is required on BOTH sides of the equipment.
l Technical instructions include metric units in addition to standard units. A metric
conversion chart is provided on the inside back cover.
l An alphabetical index is provided at the end of the manual to assist in locating
information not readily found in the table of contents.
FOLLOW THESE GUIDELINES WHEN YOU USE THIS MANUAL:
l Read through this manual and become familiar with its contents before attempt-
ing to operate or maintain the truck.
l A warning summary is provided at the beginning of this manual and should be
read before attempting to operate or maintain the truck.
iii/(iv Blank)
CHAPTER 1
INTRODUCTION
Section I. GENERAL INFORMATION
Paragraph Page
Paragraph Title
Number Number
1-1
1-1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Forms and Procedures. . . . . . . . . . . . . . . . . . . 1-2
1-2.
1-2
1-3. Corrosion Prevention and Control (CPC) . . . . . . . . . . . . . . .
1-2
1-4. Destruction of Army Materiel to Prevent Enemy Use . . . . . .
1-3
1-5. Reporting Equipment Improvement Recommendations (EIRs)
Warranty Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-6.
Nomenclature Cross-Reference List . . . . . . . . . . . . . . . . . . . 1-3
1-7.
List of Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-8.
1-1. SCOPE.
a. Type of Manual.
This manual is for use in operating and maintaining the M915
(1)
Family of Vehicles, to include the chassis of the M917A1 and M917A1 w/MCS (Mate-
rial Control System) dump truck.
For operation and maintenance of the M917A1 and M917A1
(2)
w/MCS dump truck body, refer to TM 5-380*-***-**&P.
Equipment Name and Model Number.
b.
Truck, Tractor, Line Haul: 52,000 GVWR, 6 X 4, M915A2
(1)
Truck, Tractor, Light Equipment Transporter (LET): 68,000
(2)
GVWR, 6 X 6, w/Winch, M916A1 and M916A2
Truck, Dump, Heavy, Chassis: 68,000 GVWR, 6 X 6, 14 Cu
(3)
Yd, On-Off Highway, M917A1 and M917A1 w/MCS.
c. Purpose of Equipment.
The M915A2 truck tractor is a 6 X 4 prime mover of semitrail-
(1)
ers used primarily to transport containers, bulk cargo, and petroleum products over
primary and secondary roads under worldwide climatic conditions in a military envi-
ronment.
1-1
1-1. SCOPE (Con t).
The M916A1 and M916A2 truck tractors are 6 X 6 prime
(2)
movers of low-bed semitrailers used primarily to transport heavy engineer equipment
over primary and secondary roads, and off-road, under worldwide climatic conditions
in a military environment.
The M917A1 and M917A1 w/MCS are 6 X 6 dump trucks
(3)
used to transport, dump, or spread asphalt, aggregate, dirt, and similar materials over
primary and secondary roads and off-road.
1-2. MAINTENANCE FORMS AND PROCEDURES.
Department of the Army forms and procedures used for the equipment will
be those prescribed by DA Pam 738-750, Functional User s Manual for the Army
Maintenance Management System (TAMMS), as contained in the Maintenance Man-
agement Update.
1-3. CORROSION PREVENTION AND CONTROL (CPC).
Corrosion Prevention and Control (CPC) of Army materiel is a con-
a.
tinuing concern. It is important that any corrosion problems with this item be reported
so that the problem can be corrected and improvements can be made to prevent the
problem in future items.
While corrosion is typically associated with rusting of metals, it can
b.
also include deterioration of other materials, such as rubber and plastic. Unusual
cracking, softening, swelling, or breaking of these materials may be a corrosion prob-
lem. If a corrosion problem is identified, it can be reported using SF Form 368 (Prod-
uct Quality Deficiency Report). Use of key words such as corrosion, rust,
deterioration, or cracking will ensure that the information is identified as a CPC
problem. The form should be submitted to the address specified in DA Pam 738-750.
1-4. DESTRUCTION OF ARMY MATERIEL TO PREVENT
ENEMY USE.
For destruction of Army materiel to prevent enemy use, refer to TM 750-
244-6.
1-2
REPORTlNG EQUIPMENT IMPROVEMENT RECOMMEN-
1-5.
DATIONS (ElRs).
If your truck needs improvement, let us know. Send us an EIR. You, the
user, are the only one who can tell us what you don t like about your equipment. Let
us know why you don t like the design or performance. Put it on an SF Form 368
(Product Quality Deficiency Report). Mail it to us at: Commander, U.S. Army Tank-
automotive and Armaments Command, ATTN: AMSTA-AC-NML, Rock Island, Illinois
61299-7630. We ll send you a reply.
WARRANTY INFORMATION.
1-6.
The vehicles are warranted by Freightliner Corporation in accordance with
TB 9-232*-***-**. Warranty starts on the date found in block 23, DA Form 2408-9 in
the logbook. Report all defects in material or workmanship to your supervisor, who
will take appropriate action through your Unit Maintenance shop.
NOMENCLATURE CROSS-REFERENCE LIST.
1-7.
Official Nomenclature
Common Name
Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wire Rope
Cold Start System. . . . . . . . . . . . . . . . . . . . . . . . . . . Ether Quick-Start System
Differential Lock/Unlock . . . . . . . . . . . . . . . .Interaxle Lockout (M915A2), All-Wheel Drive
(All Except M915A2)
Engine Coolant . . . . . . . . . . . . . . . . . . . . Antifreeze, Ethylene Glycol Mixture
Gladhand. . . . . . . . . . . . . . . . . . . . . . . . . . . Quick Disconnect Coupling
Jake Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine Brake
Komfort Loc . . . . . . . . . . . . . . . . . . . . . . . . Seat Belt Adjustment
No Spin@. . . . . . . . . . . . . . . . Automatic Locking Positive Traction Differential
LIST OF ABBREVIATIONS.
1-8.
NOTE
Refer to ML-STD-12D for standard abbreviations.
Definition
Abbreviation
AAL . . . . . . . . . . . . . . . . . . . . . . . Additional Authorization List
ABS . . . . . . . . . . . . . . . . . . . . . . . . Anti-Lock Brake System
Bll . . . . . . . . . . . . . . . . . . . . . . . . . . . Basic Issue Items
C . . . . . . . . . . . . . . . . . . . . . . . . .Centigrade or Celsius
1-3
1-8. LIST OF ABBREVIATIONS (Con t).
Abbreviation Definition
CID . . . . . . . . . . . . . . . . . . . . . . . . . . Cubic Inch Displacement
cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Centimeter
COEI . . . . . . . . . . . . . . . . . . . . . . . . . Components of End Item
CTIS . . . . . . . . . . . . . . . . . . . . . . . . . . .Central Tire Inflation System
ECU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic Control Unit
F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fahrenheit
GCWR . . . . . . . . . . . . . . . . . . . . . . Gross Combination Weight Rating
GVWR. . . . . . . . . . . . . . . . . . . . . . . . . . Gross Vehicle Weight Rating
kg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Kilogram
kph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Kilometers per Hour
Iph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Liters per Hour
MCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Material Control System
PMCS . . . . . . . . . . . . . . . . Preventive Maintenance Checks and Services
PTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Take-Off
1-4
Section II. EQUIPMENT DESCRIPTION AND DATA
Paragraph Page
Paragraph Title
Number Number
1-9. Equipment Characteristics, Capabilities, and Features . . . . 1-5
1-10. Location and Description of Major Components. . . . . . . . . . 1-6
Differences Between Models . . . . . . . . . . . . . . . . . . . . . . . . .
1-11. 1-15
1-12. Equipment Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
1-9. EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND
FEATURES.
Characteristics.
a.
The M915A2 is used to transport M871, M872, and M1062
(1)
semitrailers on line haul missions. It has a Gross Vehicle Weight Rating (GVWR) of
52,000 lb (23,608 kg) and is equipped with a two-way oscillating, sliding fifth wheel
compatible with a two-inch kingpin. Maximum towed load on kingpin is 30,000 lb
(13,620 kg).
The M916A1 and M916A2 are used to transport M172 and
(2)
M870 semitrailers loaded with heavy engineer equipment and 60PRS and WD6S
6,000 gallon water distributors over primary and secondary roads and off-road. They
have a GVWR of 68,000 lb (30,872 kg) and are equipped with a 45,000 lb (20,430
kg) winch, a tail roller, and a four-way oscillating, sliding fifth wheel compatible with a
3 1/2-inch kingpin. Maximum towed load on kingpin is 40,000 lb (18,160 kg).
The M917A1 and M917A1 w/MCS have a GVWR of 68,000
(3)
lb (30,872 kg), a 14 cu yd (10.7 m3) dump body capacity, and an 18.5 ton (16.8 metric
ton) load capability. They are equipped with a Central Tire Inflation System (CTIS)
which allows operation across a wide variety of terrain.
Capabilities and Features.
b.
While operating on Class I roads, the fully loaded M915A2
(1)
can maintain a speed of 55 mph (88 kph) on level roads and 29 mph (47 kph) while
ascending a 3 percent grade. It has a minimum turning diameter, curb-to-curb, of 53
ft 9 in. (16.4 m).
While operating on Class I roads, all other trucks can main-
(2)
tain a speed of 55 mph (88 kph) on level roads and 25 mph (40 kph) while ascending
a 3 percent grade.
Average cruising ranges at Gross Combination Weight Rat-
(3)
ing (GCWR) with a full tank of fuel will vary based on conditions (e.g., varying loads,
prolonged idle, PTO usage, off-road driving, and climatic conditions). Cruising range
is optimally 300 miles (483 km).
1-5
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND
1-9.
FEATURES (Con t).
The M916A1 and M916A2 have a transmission-mounted
(4)
PTO which powers the winch. The PTO on the M917A1 and M917A1 w/MCS powers
the dump body controls (TM 5-380*-***-**&P).
The M915A2 and M916A1 are equipped with an instrument
(5)
panel mounted tachograph which registers and records data related to truck ground
speed, engine speed, and distance traveled. This data is stored on a 7-day graph for
a permanent record. All other models are equipped with a Datalogger which is a data
processing module that provides data storage capability and records in detail the per-
formance and utilization of the vehicle. Datalogger memory can store over a month of
data for use by maintenance and management personnel. There is no operator inter-
ference with the Datalogger.
The following capabilities and features are common to all
(6)
models:
(a) air-activated front and rear non-asbestos cam brakes
with a four-channel anti-lock brake system (ABS) to provide significantly improved
handling and braking during emergency stops;
(b) operation in temperatures from -25 F (-32 C) to +125oF
o
(+52 C), and to -40 F (-40 C) with arctic kit installed;
(c) start and climb capability of a 20 percent grade at
GCWR in both forward and reverse directions;
(d) fording capability up to 20 in. (51 cm) deep for 5 minutes
without damage or requiring maintenance before operations can continue;
(e) two-passenger aluminum corrosion-proof cab with a 90
degree tilt-forward hood for service accessibility;
(f) six cylinder, 12.7 liter, 400 horsepower, in-line diesel
engine built by Detroit Diesel;
(g) Allison HT-740 four-speed automatic transmission.
1-10. LOCATlON AND DESCRlPTlON OF MAJOR COMPON-
ENTS.
a. M915A2, M916A1, and M916A2.
Key Component Description
1 Marker Clearance Indicate outline of truck.
Lights
Air Horn
2 Provides an audible alert.
1-6
LOCATION AND DESCRIPTION OF MAJOR COMPO-
1-10.
NENTS (Con t).
M916A1 AND M916A2
Description
Component
Key
Provide driver with a view of sides of truck.
Side Mirrors
3
Provide a hand hold for personnel climbing on truck.
Grabhandles
4
Supplies power for work lights. Located on both
Utility Power
5
sides of truck.
Receptacle
Extra wheel and tire used in case of a flat tire.
Spare Wheel and Tire
6
1-7
LOCATION AND DESCRIPTION OF MAJOR COMPO-
1-10.
NENTS (Con t).
M916A1 AND M916A2
Component Description
Key
7 Battery Box and Holds vehicle batteries and provides steps to
Steps access cab.
8 Front Service Lights Include headlights and turn signals.
9 Sling Points Provide attachment point for slings.
10 Blackout Lights Used during blackout conditions. Include marker
and drive lights.
1-8
LOCATION AND DESCRIPTlON OF MAJOR COMPO-
1-10.
NENTS (Con t).
Description
Component
Key
Provide attachment points for towing device.
11 Towing Eyes
Protects front of hood and components under hood
Brush Guard
12
from damage.
Provide added visibility to sides of truck and
Spotting Mirrors
13
semitrailer if towing.
Operate winch.
Winch Controls
14
(M916A1 and
M916A2)
1-9
LOCATION AND DESCRIPTION OF MAJOR COMPO-
1-10.
NENTS (Con t).
Component Description
Key
4 Grabhandles Provide a hand hold for personnel climbing on truck.
Ramp Sloped surface serves as an approach to fifth wheel
15
and facilitates coupling of semitrailer.
Fifth Wheel Coupling device for semitrailers with kingpins.
16
1-10
1-10. LOCATION AND DESCRIPTION OF MAJOR COMPO-
NENTS (Con t).
Component Description
Key
17 Mounting and stowage location for intervehicular air
Hosetenna
lines.
18 Utility Lights Illuminate area in back of cab. There is one light on
each side of cab.
Beacon Warning Light Amber rotating light alerts other vehicles of
19
presence of truck.
Deadens noise of engine exhaust.
20 Exhaust Muffler
21 Locks hood closed. Located on both sides of hood.
Hood Latch
Holds fuel. Steps mounted to tank provide access
22 Fuel Tank
to cab.
Provide stowage area for BII and other items.
23 Storage Boxes
Prevent water and debris from spraying up on
24 Mud Flaps
passers by or towed semitrailer.
Provide air supply for brakes of trailer.
Trailer Gladhands
25
Coupling device for trailers with lunettes.
26 Pintle Hook
Contain composite tail, stop, backup, and turn
27 Taillights
signal lights.
Facilitates coupling and uncoupling operations.
Tail Roller (M916A1
28
and M916A2)
Powered by PTO to perform winching operations.
Hydraulic Winch
29
(M916A1 and
M916A2)
1-11
Contact this candidate