TM-9-2350-311-34-2
CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM
TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 1994
TM-9-2350-311-34-2 - Page 519 of 552
TM 9-2350-311-34-2
APPENDIX D
TORQUE LIMITS
GENERAL
This appendix provides general torque limits for screws used on the M109A2/M109A3/M109A4/M109A5 Howitzer. Spe-
cific torque limits are indicated in the maintenance procedures for applicable components. The general torque limits given
in this appendix shall be used when specific torque limits are not indicated in the maintenance procedure.
These general torque limits cannot be applied to screws that retain rubber components. The rubber components will be
damaged before the correct torque limit is reached. If a specific torque limit is not given in the maintenance instructions,
tighten the screw or nut until it touches the metal bracket, then tighten it one more turn.
This appendix also provides information on tightening metal fasteners, fastener size and thread pattern, and fastener
grade.
CONTENTS
Page
D-1
TORQUE LIMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
D-2
HOW TO USE TORQUE TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
TIGHTENING METAL FASTENERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4
FASTENER SIZE AND THREAD PATTERN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4
D-5
FASTENER GRADE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-6
D-3
D-4
D-1
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