Perform in-place refurbishments and repairs on ship service motor generator

Perform in-place refurbishments and repairs on No . 2 500 kW SSMG set onboard
an SSN 21 Class submarine . The work consists of , measure initial insulation resistance
values , complete SSMG set disassembly including rigging and inspection of all machine
components , measure bearing seat dimensions , accomplish in-place detergent/water cleaning
of SSMG set to include air cooler , static exciter , rotor and stationary field windings ,
repair defective insulation , replace field leads as required , stone commutator (remove a
minimum 0 . 010 " of material) , stone/polish slip rings as required , undercut and bevel
commutator , if necessary , replace ac and de bearings from GFM supplied by Ship ' s Force ,
replace ac and de bearing cartridges from GFM supplied by Ship ' s Force , replace
ac/dc/overspeed brushes from GFM supplied by Ship ' s Force , replace air filters from GFM
supplied by Ship ' s Force , repair the commutator V- ring band epoxy seal , reinsulate
windings , repair or replace stripped fasteners and repair threaded bolt holes as required ,
torque check bolted electrical connections , replace defective/disturbed Belleville washers ,
replace defective access cover gaskets , reassemble SSMG set , install and seat new brushes ,
set neutral plane , accomplish close- out inspection , and operational testing , and submit
final report following completion IAW Reference (1) NAVSEA s9086-KC-STM-010/CH- 300
R9 Chapter 300 Electric Plant , Reference (2)Maintenance Standard MS3140-081-046 , Rev A
Chg 2, and Reference (3)DC/AC or AC/DC Motor Generator Set and Associated Control
Equipment S6269-AW- MMM- 010 Rev 2 Chg L.

Awarded contract N4523A20P0805 to unknown vendor for unknown amount on 2020-06-30.