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 1158 of 1275
APPENDIX F
TORQUE LIMITS
This appendix provides general wet torque limits for screws. Specific 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 provided 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 provided for screws that contain rubber
components in the maintenance procedure, 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
F-1
TORQUE LIMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. F-2
F-2
HOW TO USE TORQUE TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. F-2
F-3
TIGHTENING METAL FASTENERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. F-4
F-4
FASTENER SIZE AND THREAD PATTERN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. F-4
F-5
FASTENER GRADE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. . . . . . . . . .
. F-5
F-1
TM9-2350-311-20-1
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