This concludes part B on the use of the technical manual. You will
now proceed to part C, where you will learn the special safety
precautions associated with repair of the X200-4 transmission, and
the general safety procedures applied during normal maintenance
operations.
PART C - SAFETY PRECAUTIONS
Before working on any equipment, it is essential that you become
familiar with any special safety precautions associated with that
item of equipment.
NOTE:
Repair persons must also observe general safety precautions as
well as the special safety precautions.
As mentioned previously, pages a and b of the TM give a summary of
the safety precautions which you must follow when repairing or
maintaining the transmission (see appendix B). Additionally, the TM
repeats safety warnings and cautions throughout the text, just before
you start any step of the maintenance procedures that could injure
other people or yourself.
For example, pages a and b list the
warning and safety requirements for using dry cleaning solvent P-D-
680, for cleaning with compressed air, for steam cleaning, and for
using tribasic sodium phosphate.
Now look on page 3-2, General Maintenance Instructions (appendix B);
you find the TM gives the same safety precautions again, just before
you use dangerous solutions to clean parts of the transmission.
These safety warnings have only one purpose:
to prevent you from
doing anything which could injure or kill you or someone else. As a
maintenance person, you must read these safety precautions, become
thoroughly familiar with them, and apply them without fail while
performing any repair or maintenance procedures on the X200-4
transmission.
Before
you
proceed
to
part
D,
which
describes
the
X200-4
transmission, read pages a and b, reproduced in appendix B, and
become familiar with the safety warnings and cautions that you must
observe when working on the transmission.
PART D - DESCRIPTION OF THE X200-4 TRANSMISSION
The model X200-4 transmission is manufactured by the Detroit Diesel
Allison Division of General Motors Corporation (GMC).
It has an
input rating of 265 horsepower (hp) net (maximum), an input speed of
2800 revolutions per minute (rpm), and can move a vehicle with a
gross weight of 30,000 pounds at 40 miles per
12
OD1714
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