TM-9-2330-335-14-P
SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)
SEPTEMBER 2008
TM-9-2330-335-14-P - Page 3 of 640
TM 9-2330-335-14&P
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WARNING SUMMARY
This warning summary contains general safety warnings and hazardous materials warnings that must be
understood and applied during operation and maintenance of the semitrailer. Failure to follow these
warnings may result in serious injury or death to personnel.
WARNING
AIR BRAKE CHAMBERS
• To prevent injury, keep hands away from brake chamber push rods and slack adjusters. They will move as
service brakes are operated, and will automatically apply if system pressure drops. Fingers/hands could be
pinched or cut by moving parts. Failure to comply may result in injury to personnel.
• Disassembly of air brake chambers is NOT authorized. When inspecting or caging air brake chambers, do not
position yourself in front of, or in line with, the chamber. Failure to follow this warning may result in injury or
death to personnel.
• Discarded air brake chambers must be safely and properly disposed of. They should be disarmed prior to
disposal. Failure to disarm assembly prior to disposal may, in time, result in spontaneous release of the spring
chamber and its contents, causing death, personal injury, and/or property damage.
WARNING
BRAKE SYSTEM
• Before performing any work on the spring brake system, chock the wheels front and rear to prevent semitrailer
movement. Failure to follow this warning may result in injury or death to personnel.
• All brake chambers must be caged before working on the brake system to prevent serious injury to personnel
and damage to equipment.
• The axle must be firmly supported to prevent shifting of the semitrailer. Shifting may cause serious injury to
personnel and damage to equipment.
• A hot brake can cause serious burns. Exercise extreme caution before attempting to touch brake drum after use.
Radiated heat will be felt before drum is touched. Failure to comply may result in injury to personnel.
• Do not use air pressure or a steel bristle brush to clean cones and rollers. Use kerosene or diesel fuel to clean
bearings. Do not use gasoline. Do not rotate bearings using compressed air, as this will damage the polished
surfaces. Bearing failure can cause injury to personnel.
• At triennial brake inspection/service all brake wheel end components must be cleaned and inspected for wear/
damage. Inspect all linings, springs, pins, rollers, clips, and bushings on each axle end. Make sure seals show
no signs of leakage on axle, spider, or wheels. Use all components of replacement kits and balance repairs on
both axle ends. Failure to comply can cause injury to personnel and damage to equipment.
• Do not allow brake lining to wear to the point that the rivets touch the drum. This condition can cause brake
failure, injury to personnel, and damage to equipment.
• The triennial check/service is based on normal operation. Conditions identified such as hot/cold brake drums,
leakage/seepage of spindle/hub grease, brake lock-up, wheel end noise/damage, and impact damage will
require inspection and repair to be performed when the incident occurs, not at service interval. Failure to
comply can cause injury to personnel and damage to equipment.
• Clean and check all S-camshaft brake components for wear and damage. Replace worn or damaged parts. At
triennial service replace all O-rings, bushings, retainers, snap rings, lockwashers, and brackets on each axle
end. Failure to comply could cause injury to personnel and damage to equipment.
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