MODERN BURNER UNIT (MBU)
UNIT MAINTENANCE PROCEDURES
THIS SECTION COVERS:
Inspect, Test, Replace
MBU shut-down, cool, and disconnected from power source (WP 0005)
Fuel tank drained (WP 0011)
Tools and Special Tools
Shop Equipment Automotive Maintenance and Repair: Organizational Maintenance, Common No. 1
(WP 0038, Table 2, Item 2)
This procedure contains information and instructions to keep the MBU in good working order by
inspecting and replacing the entire compressor assembly, consisting of the compressor, hose clamps,
vibration grommets, mounting plate, self locking nylon nuts and washers.
Two Person Lift
The MBU weighs approximately 58 pounds fully fueled (26.3 kg). Two persons must carry the
fully fueled MBU, lifting with legs, not back, to prevent injury.
Inspect compressor assembly for damage, excessive rust or contamination to the compressor housing,
mounting plate, hose clamps, vibration grommets, or mounting hardware. Also inspect the compressor
wires for frayed insulation or exposed wires.
Fire / Fuel Contamination
Before proceeding with this procedure, the MBU fuel tank must be drained completely as
described in work package 0011. Have rags on hand to clean up fuel spillage that may occur
to prevent contamination. Do not perform this procedure near an open flame to prevent fire.
Remove the Reflective Heat Shield and Burner Assembly from the MBU frame as described in WP 0024.
Set the assembly aside.