User's Manual

SBS-900 Shore Based Radar Systems
Chapter 9: Planned maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 90 of 240
SBS-900 Annual planned maintenance record sheet
Inspection sheet
3 of 10
Gearbox inspection
Task Description Pass Fail
General
cleaning
Clean all exterior surfaces with a soft, cloth moistened in a mild non-
abrasive soap solution.
' '
Physical
inspection
Ensure that all securing bolts for the gearbox and antenna are secure
and show no signs of severe corrosion or damage. Pay particular
attention to the bolts that hold the gearbox assembly onto the
mounting plate.
' '
Inspect the gearbox including all mounting points for any signs of
stress damage.
Severe weather: This inspection should be carried out at the earliest
safe opportunity after the system has been exposed to severe or
adverse weather conditions.
' '
Check that cable glands, cable entries and waveguide couplings are
securely fastened and appear to be waterproof.
' '
Within reason and where safe to do so, check all accessible or
exposed cables for any signs of damage and ensure they are safely
secured into/ onto cable trays or trunking.
' '
The system should be checked to ensure that there is no obvious
external damage or potential fault conditions that could lead to a
general failure of any part of the system.
' '
Check for any signs of oil leaks from the gearbox assembly.
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Earth
bonding
and
continuity
Ensure that the earth bonding nuts and bolts are tight and free from
corrosion.
If corrosion is present, clean and re-terminate as described in section
9.7 page 114.
' '
Test the earth bonding conductivity by attaching one lead of the test
equipment
note1
to earth/ chassis and the other to an unpainted part of
the equipment under test.
Check earth bonding for continuity, the resistance should not exceed
0.1 ohms. If a test fails, investigate the bonding, rectify (see section
9.7 page 114) and repeat the test.
Note
1
: Safety ohmmeter, bridge Megger or Multimeter.
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