MD Helicopters MD Explorer - Fan Bearing Lubrication

CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 217
Revision 34
12-00-00
9G12−014
WASHER
SCREW
GREASE TOOL
PART A
GREASE TOOL
PART B
FAN BEARING
WASHER
WING NUT
GREASE FITTINGS
Figure 210. Fan Bearing Lubrication Tool
C. Fan Bearing Lubrication
(Ref. Figure 210)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C104 Grease
C107 Grease, Aircraft
Special Tools
(Ref. CSP−SPM)
Item Nomenclature
T604 Anti−Torque Bearing Grease Tool
(1). Remove bearings from either the fan
pitch control assembly or fan support
(ref. Section 64-30-00).
(2). Carefully remove both seals from
bearing.
(3). Inspect seals for damage.
(a). No damage permitted.
(4). Install bearing between grease tool
Part A and Part B, with a 4-inch 10-24
threaded bolt, washers, and wing nut.
 Either part number 500N or 900R bear
ings can be installed.
 The 500N bearings use aircraft grease
(C107).
 The 900R bearings use grease (C104).
NOTE: This procedure provides 100% grease fill.
During operation, unwanted grease will ex
trude past seals until the correct fill is gotten.
Grease (C104)
Grease, Aircraft (C107)
(5). Purge bearing with grease (C104) or
aircraft grease (C107) until clean grease
protrudes from all four holes in Part A of
grease tool.
(6). Remove anti-torque bearing grease tool
(T604).
(7). Hand rotate bearing to purge excess
grease.
CAUTION