TM-9-2320-285-24-1
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-1 - Page 8 of 987
TM 9-2320-285-24-1
HOW TO USE THIS MANUAL
This manual is designed to help you maintain the M878A1 tractor.
It’s divided into volumes, chapters, sections, and
appendices.
Volume 1 chapters contain general information and organizational maintenance procedures.
Volume 2
chapters contain direct support and general support maintenance procedures.
The chapters are divided into sections
containing maintenance procedures for the various tractor systems.
The appendices contain supplemental information which you require to maintain the M878A1 tractor.
The maintenance procedures contained in this manual tell you several things:
.....................
what tools you need to do the job
.....................
materials or parts required
.....................
what condition the vehicle is to be in before work is started
In addition to text, you’ll have either an assembled view or an exploded-view illustration of the associated parts.
Sometimes, the illustration will be keyed by an arrow to an overall view of the vehicle to help you determine the
approximate location of the parts.
The illustration is keyed to the text by numbers and shows you how to take the part off
and put it on.
The following problem will show you some of the features of this manual.
PROBLEM
An operator brings his M878A1 tractor into the shop with an engine problem: The engine is hard to start.
The best way to
solve his problem is by using your manual.
This is what you do:
1.
How do you start?
Look at the cover of this manual.
On the cover you’ll find a listing for TROUBLESHOOTING INDEX.
It tells you to go to page 2-11.
To find
page 2-11 fast, open the manual by using the black tab that lines up with the listing on the cover.
2.
What kind of problem do you have?
Find it in the symptom index.
The symptom index is a list of problems covered by the section.
It tells you that your problem, "engine hard
to start or will not start" is covered in paragraph 2-8, Malfunction entry number 1.
3.
How do you determine what is causing the problem?
Go to paragraph 2-8, Malfunction entry number 1.
There you’ll find the troubleshooting procedures you’ll need.
The procedure has columns with the headings:
MALFUNCTION, TEST OR INSPECTION, and CORRECTIVE ACTION.
Starting at step 1, read the
procedure.
Each step tells you what to do and what to look for.
Follow the steps, in order, until you find your
problem.
When you find the problem, the CORRECTIVE ACTION column will tell you how to fix it.
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