Section 1. GENERAL
This volume contains the maintenance requirements and procedures for direct support and general
support (DS/GS) maintenance for the M19 and M24 Periscopes. See Volume I for troubleshooting
a. Chapter 2, General Maintenance Information, lists the maintenance items and references general
procedures that are necessary to do the maintenance in this manual.
b. Chapter 3, Inspection Upon Receipt, gives the kind of defects to look for when the unit is
returned to DS/GS. A complete inspection should be made and faults listed on DA Form 2404 before
any repairs are made.
c. Chapter 4, Maintenance Procedures, gives step-by-step procedures to repair faults found during
inspection or troubleshooting.
d. Chapter 5, Final Inspection, gives procedures to be done after repair to make sure that the
periscopes work and are ready for packaging or installation.
e. Chapter 6, Packaging, gives procedures for packaging the periscopes for storage or shipment.
f. Appendix A, Expendable Supplies and Materials, lists the supplies and materials needed to repair
g. Appendix B, Maintenance Task Index, helps you find the necessary maintenance tasks for the