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Section II. LUBRICATION
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TM-9-4931-583-30-P Boresight Kit T-102300-101 (
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SECTION V. GENERAL MAINTENANCE
TM
9-4931-583-30&P
S E C T I O N IV.
TROUBLESHOOTING
Failure of any
NOTE
Troubleshooting.
alignment step, table 2-1, will require isolation of
All blocks mounted on the main frame
fault to block assembly or frame.
a s s e m b l y are aligned and shimmed
during manufacture and must not be
disturbed. If blocks have been moved
a. Check all fittings to ensure correct
or altered the main frame assembly
assembly (all dowel pins and holes engaged and
shall be sent to depot for disposition.
fittings securely connected).
c.  Ensure main frame assemblv mounting
surfaces are properly seated on slider studs.
b. Ensure block assemblies on all alignment
assemblies are firmly installed and seated on their
d. Check for failure of block alignment or
respective mounting plates (retainer bolts and
frame out of alignment. Refer to table 2-2.
lockwire undisturbed).
Table 2-2. Troubleshooting
MALFUNCTION
T E S T OR INSPECTION
C O R R E C T I V E ACTION
BAGSE
1.
SELF-ALIGNMENT BORESIGHT ALIGNMENT DOES NOT CHECK WITHIN TOLERANCE.
Ensure boresight telescopes are properly aligned.
Step 1.
Step 2. Check to see if one block assembly alignment holes do not align with any other block
assembly.
If block assembly main frame assembly is misaligned, replace main frame assembly
and ship to depot for repair.
If block assembly on other than main frame assembly is misaligned, adjust block
assembly mounting adjustments.
Step 3. Check block assembly boresight telescope mounting port bushing for looseness or
damage.
Ship block assembly to depot level for bushing replacement.
Step 4. Check frame assembly for warped, bent or other damage to cause misalignment of block
assembly. A twisted frame is suspect when more than one block cannot be aligned.
Ship main frame assembly to depot for repair.

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