DIRECT SUPPORT (INTERMEDIATE) MAINTENANCE INSTRUCTIONS
Section I. GENERAL
standards contained in Section V may be used at
periodic intervals to check the ability of the balanced
This chapter provides specific instructions for all
magnetic switch to perform its intended mission.
maintenance functions authorized direct support
maintenance personnel by the maintenance allocation
5-3. Periodic Checks and Services
chart (app B).
Included are maintenance,
There are no scheduled preventive maintenance
troubleshooting and repair instruction, and performance
procedures required for the balanced magnetic switch.
Since the J-SIIDS must be kept in continuous operation,
periodic testing of the balanced magnetic switch to
check continued performance will be dictated by system
These maintenance instructions are primarily for use
following isolation of a J-SIIDS malfunction to the
balanced magnetic switch. However, the performance
Section II. TOOLS AND EQUIPMENT
5-4. Standard Tools and Equipment
5-5. Special Tools and Equipment
Table 2-1 lists standard tools and test equipment
No special tools and equipment are required for direct
required at direct support maintenance level.
support maintenance of the balanced magnetic switch.
Section III. TROUBLESHOOTING
Troubleshooting the balanced magnetic switch at direct
5-6. Visual Inspection
support level requires no special procedure. After
Before troubleshooting the balanced magnetic switch,
disconnecting system interconnecting wiring, check
make a thorough visual inspection.
circuit continuity using the volt/ohm meter listed in table
insulation and components for evidence of failure.
2-1 and the schematic diagram, figure 4-1. If continuity
Check housing interior for presence of moisture and
checks do not reveal a defective component, check
other foreign matter.
biasing magnet adjustment, paragraph 2-8.
Section IV. MAINTENANCE OF BALANCED MAGNETIC SWITCH
for correcting malfunctions detected during visual
inspection and checkout.
a. This section contains instructions for corrective
maintenance of the balanced magnetic switch. The
c. Repair of the balanced magnetic switch will be
extent of maintenance to be performed by direct support
performed either at the installation site or at the repair
personnel is governed by the maintenance allocation
On-site repair will normally consist of
chart (app B) and allocation of parts (app c).
replacement of defective components and should be
followed by adjustment, if applicable (para 2-8), and
b. The information in this section supplements that
performance testing in accordance with paragraph 512.
in section III (troubleshooting) and provides instructions