Aerospace Filtration Systems, Inc.
MD500-IBF-KIT-OMM/IPL
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Information
Use or disclosure of this material is subject
MD500 IBF Operation & Maintenance Manual/
to the restrictions on the title page
Illustrated Parts List - Revision B
12
4.4 F
ASTENER
R
EPLACEMENT
In the event a fastener becomes damaged and is no longer functional, replacement fasteners are
identified in the section
5.0 Illustrated Parts List
. Cut the retaining grommet with a pair of
diagonal cutters and remove stud from hole. Insert new stud through ejector blade hole and
place new grommet over the end of the stud. Flatten grommet with suitable tool to make the stud
captive. If the receptacle is damaged, drill out rivets that secure receptacle. The receptacles used
on the IBF are floating receptacles, Dzus Type RF35. When replacing a receptacle be sure to
install the spacers, Dzus Type RF35-5L in the receptacle holes prior to riveting the receptacle
back in place. Ensure receptacle floats after assembly.
4.5 F
ILTER
M
AINTENANCE
A
ID
I
NDICATOR
(FMA) - O
PTIONAL
The Filter Maintenance Aid provides an indication to maintenance personnel as to the trend of
the differential pressure across the Filter Assembly. The construction details of the component
do not warrant field maintenance. Repair of this component requires it to be sent back to AFS
for disposition, or replacement. The FMA is an aid to help maintenance personnel to ascertain
the current condition or trend in accumulation of dirt on the Filter Assembly.
4.5.1 Removal
Access the aft compartment behind the left hand passenger seat. Disconnect the hose from the
AN842-4D nipple. Then remove the hardware and FMA Retaining Ring from Filter Maintenance
Aid Mount. Remove Filter Maintenance Aid.
4.5.2 Inspection
Inspect the Filter Maintenance Aid and associated mounting for discoloration affecting
readability, cracks, deformation, missing or damaged components, and serviceability. Inspect
the Filter Maintenance Aid Tube Assembly for debris and insure that the tube is clear and
unobstructed. Inspect the associated components, such as the Mount Assembly and hardware for
missing components, cracks, distortion or deformation, scratches or gouges, or missing
protective coatings. If Filter Maintenance Aid Bracket assembly is cracked or nut-plates are
unserviceable, drill out the attaching rivets that secure the component and obtain new component
and re-attach using same type rivets (MS20470AD4 for bracket) or (MS1097AD3 for nut-
plates).
4.5.3 Adjustment
The Filter Maintenance Aid is designed to hold the highest differential pressure across the filter
assembly reached during the last flight, and can be reset by depressing the yellow button marked
“PUSH TO RESET” located on the end of the filter maintenance aid (See Pictures 1 & 2).
Summary of Contents for MD500 Series
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