TM-9-2350-311-20-1
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS
AUGUST 1994
TM-9-2350-311-20-1 - Page 856 of 1275
CHAPTER 9
TRANSMISSION, TRANSFER, AND DRIVE
TM9-2350-311-20-1
CONTROL ASSEMBLIES
GENERAL
This chapter provides instructions for checks, testing, adjustment, and common information for transmission and
transfer assemblies, and provides instructions for the removal, installation, disassembly, assembly, and adjustment of
driving controls and linkages.
CONTENTS
PAGE
Section I
9-1
9-2
9-3
9-4
9-5
9-6
9-7
Section II
9-8
9-9
9-10
9-11
9-12
9-13
9-14
9-15
9-16
9-17
9-18
TRANSMISSION AND TRANSFER ASSEMBLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-2
TRANSMISSION OIL LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-2
TRANSMISSION OIL PRESSURE CHECKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-2
PRESSURE CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-2
OIL FILTER AND OIL COOLER HOSES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-7
OIL FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-9
BREATHER, BREATHER TUBE, AND MOUNT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-11
TRANSMISSION OIL SAMPLING COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-13
DRIVE CONTROL ASSEMBLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-14
STEERING CONTROL LINKAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-14
SHIFT CONTROL LINKAGE AND NEUTRAL SAFETY SWITCH ADJUSTMENT. . . . . . . . . . . . . .
.. 9-22
SERVICE AND PARKING BRAKE LINKAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-30
ACCELERATOR, THROTTLE, AND ENGINE CONTROL GOVERNOR . . . . . . . . . . . . . . . . . . . . . .
. 9-40
TRANSMISSION INTERNAL BRAKE.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-49
TRANSMISSION THROTTLE VALVE.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-51
ENGINE THROTTLE GOVERNOR CONTROL ROD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-52
HAND THROTTLE GOVERNOR CONTROL ROD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-53
ACCELERATOR PEDAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-55
WARNING LIGHT AND STOP LIGHT SWITCHES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-56
SPEEDOMETER AND TACHOMETER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9-57
9-1
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