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9. SERVICEABILITY TEST
The principal tests to be performed on the range finder are listed below.
Table 9.1
What is checked, tools, instruments,
equipment. Test procedure
Technical requirement
1. Range finder completeness
2. Range finder exterior
3.Exterior of range finder optical
parts (to be checked visually).
Make sure the unit is off!
4. Dehydrator case of range finder
(to be checked visually)
5.Battery voltage. Proceed as
directed under 8.3.1.
6. Illumination of range finder
Binocular reticle. Check that front
cover is closed on range finder
and set ILLUM. selector switch to
ON
7.Functioning of range finder.
Proceed as directed under 8.3.2.
8. Setting of zero elevation
reference (ER “0”). Proceed as
under 8.6.1.
Range finder is complete with all
components listed in Section 5
Exterior surfaces are clean and free from
cracks, dents and rust
Optical surfaces are free from cracks,
scratches, chips, dirt, grease stains (on
exterior) and condensed moisture
(inside)
Silica gel is bluish in colour
Red glow not observed in left eyepiece of
range finder
Binocular reticle is illuminated
Measurement results are within 5 m of
predetermined range or on another ER
“O” error determined for vertical angle
scale is to be reckoned in while
measuring target elevation
Table 9.1, continued
What is checked, tools, instruments,
equipment. Test procedure
Technical requirement
9. Sensitivity, indexing uniformity
and balance of magnetic needle.
Proceed as under 8.6.2.
10. AI azimuth and elevation
adjustment knobs for play
Turn in unit for repair if even a
single requirement of 8.6.2. is
not satisfied
If necessary, tighten bushings on
knob end faces to eliminate play
10. MAINTENANCE
10.1. Maintenance Organization and Procedure. General
Instructions.
10.1.1. This Section deals with the maintenance services
prescribed for the range finder, excepting the battery servicing
procedure. For the latter procedure, refer to Section 16.
10.1.2. The range finder is serviced to ensure its operability
and readiness for operation.
The range finder is subject to timely full-scope servicing,
unless premature wear should occur resulting in shorter periods
between repairs.
10.1.3. While preparing for and carring out the maintenance
services, observe the safety precautions as outlined in Section 6.