a. These instructions are published for the use of personnel responsible for field maintenance of this materiel. They contain information on maintenance which is beyond the scope of the tools, equipment, or supplies normally available to using organizations. This manual does not contain information which is intended primarily for the using organization, since such information is available to ordnance maintenance personnel in the pertinent operator's technical manuals or field manuals.

b. This manual contains a description of and procedures for removal, disassembly, inspection, repair, and assembly of the materiel listed below-

60-mm mortar M2

60-mm mortar M19

60-mm mortar mount M5

60-mm mortar baseplate M1

81-mm mortar M1

81-mm mortar M29

81-mm mortar mount M4

81-mm mortar mounts M23A1, M23A2, and M23A3

c. The appendix contains a list of current references, including supply manuals, technical manuals, and other available publications applicable to the materiel.

d. TM 9-3064, FM 23-85, and FM 23-90 contain operating and lubricating instructions for the materiel and contain all maintenance operations allocated to using organizations in performing maintenance work within their scope.

e. This manual differs from TM 9-1260 as follows:

(1) Adds information on-

81-mm mortar mount M23A2.

81-mm mortar mount M23A3.

(2) Revises information on- Inspection.

60-mm mortar mount M5.

81-mm mortar mount M4.

(3) Deletes reference to-

Depot maintenance.

60-mm mortar mount M2.

81-mm mortar mount M1.

81-mm mortar mount M23.