TM-9-2520-272-34P
CROSS DRIVE TRANSMISSION WITH CONTAINER MODEL X200-4 & 4A
TECHNICAL MANUAL; INTERMEDIATE, DIRECT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
TM-9-2520-272-34P - Page 13 of 488
TM 9-2520-272-34&P
HOW TO USE THIS MANUAL (Continued)
Look at Chapter 4, Transmission Maintenance Procedures, in the table of contents. There are
four sections shown in this chapter. There will be no chapter index; all indexes are with the
sectional headings. When you turn to page 4-1, there will be an index, but it will be for Section
I instead of for the chapter.
INTRODUCTION
The introduction to the manual provides you with general information about the transmission
and pictorially identifies major assemblies and subassemblies of the transmission.
Nomenclature Cross-Reference List. Sometimes a part is generally known by a common name
which is not the same as the formal name used in the Repair Parts and Special Tools List
(RPSTL). When maintenance procedures use the common name for a part, the Nomenclature
Cross-Reference List, page 1-2, will usually provide the formal name for the part as shown in
the RPSTL.
For example, the name used by maintenance personnel for the hydrostatic pump and motor
assembly is “hydrostat."
The RPSTL calls this unit “hydrostatic pump and motor” (assembly). If
you were to look in the RPSTL for “hydrostat” and did not find it, then you would go to the
Nomenclature Cross-Reference List to determine what the part is called in the RPSTL.
There are a few common terms which will not appear in the nomenclature Cross-Reference List
and they will not appear in the RPSTL. One of these terms is “range pack,” meaning all of the
parts in one area of the transmission (mostly clutch assemblies) which function individually or
collectively to vary the speed and power output or to change forward-reverse direction. Since
the term “range pack” is a collective term applying to several parts and assemblies in the
RPSTL, it has no specific RPSTL equivalent.
Therefore, the term “range pack” will appear in
the glossary only. If you encounter a term which is not shown in the Nomenclature
Cross-Reference List or the RPSTL, check the glossary.
Equipment Data.
An equipment data Iist provides particulars about the transmission such as
input horsepower, ratios of forward and reverse ranges, oil capacity and transmission weight.
TROUBLESHOOTING
Troubleshooting, or fault-identification, enables maintenance personnel to systematically
accomplish the following:
•
•
•
Determine probable cause of transmission malfunction based upon symptoms provided
by operating personnel.
Go through a series of logical checks and tests to verify probable cause for malfunction,
or to identify unknown causes
Determine what parts need to be replaced or repaired, or what area of the transmission
requires maintenance action.
V
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