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 560 of 640
TM 9-2330-335-14&P
0096-18
0096
DISARMING INTRODUCTION
00096
The proper disposal of old spring brake chambers is a concern of commercial industry and should be a concern of all
maintenance shops. ALL retired spring brake chambers (actuators) must be safely disarmed before they are disposed of to
prevent serious personal injury from accidental sudden release of the high-energy spring (as much as 2,700 lb-ft [12,010
Nm]) in the packing chamber.
It is recommended that the coils of the power spring be cut with an acetylene gas torch prior to disposal. This simple
procedure renders the power spring inoperable, permitting the chamber to be safely discarded.
Reference Figure 22 with material list for fabrication of the Spring Brake Disarming Chamber as engineered by Lear
Siegler Truck Products Corporation.
WARNING
Spring air brake chambers should never be rebuilt. Never attempt to loosen or remove the housing
retaining clamp(s) bolts or repair the chamber in any way. Serious injury or death will occur.
•
This disarming chamber is to be fabricated at the Direct Support or higher level.
•
An annual inspection of this disarming chamber will be accomplished at the DOL or Depot Level
QA/QC as is the case for tire cages.
•
DOL will certify inspection of the disarming chamber by stamping or applying data plate.
•
There will be NO substitution of ANY materials used to fabricate this chamber. Materials and
welding standard/locations specified on the drawing are to be used in this fabrication. This is a
safety device.
•
Never operate an acetylene gas torch without wearing proper clothing and eye protection.
Maintenance Levels (Figure 22)
00096
Chamber Fabrication: Direct Support and above
Disarming Procedures: Organizational and above
Back to Top
