MD Helicopters MD Explorer - Modification;Repair; Main Fuel Tank Cover Modification

CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 801
Revision 1
28-10-00
SUPPLEMENTAL FUEL SYSTEM (OPTION)
MODIFICATION/REPAIR
1. Main Fuel Tank Cover Modification
(Ref. Figure 801)
The LH aft main fuel cell access cover has
been modified on helicopters with the supple
mental fuel system installed. These modified
access covers do not have a different part
number than a non-modified cover. For a
replacement it is necessary to order a standard
access cover and modify it. The modification
consists of drilling four (4) holes for mounting
the level control valve support.
(1). Using referenced figure, locate holes in
access cover.
(2). Drill holes with a number forty (40) (2.5
mm) pilot drill.
(3). Enlarge holes in access cover to 0.281
" 0.010 in. (7.14 " 0.25 mm) and
deburr holes.
(4). Touch up holes in accordance with
Aluminum Alloy Surface Touch-up
Treatment (Ref. CSP-SPM).
9G28-068
5.19 IN
(13.18 cm)
1.40 IN
(3.56 cm)
1.50 IN
(3.81 cm)
5.25 IN
(13.34 cm)
4X O 0.281 +/- 0.010 (7.14 mm +/- 0.25 mm)
Figure 801. Main Fuel Tank Cover Modification