Meggitt F145 Series, Руководство по обслуживанию

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Meggitt Fuelling Products
Maintenance Manual (MMF145)
Pressure Fuelling Nozzle – F145 Series
USE OR DISCLOSURE OF DATA ON THIS PAGE IS SUBJECT TO THE RESTRICTIONS ON THE TITLE PAGE OF THIS DOCUMENT
05 Jan 2015 Revision 6.4 13
FAULT ISOLATION
1. General
This section contains fault isolation procedures for the nozzle. Operate the nozzle in accordance with
the Operation section, if the nozzle fails to operate correctly refer to
Table 6 and select the appropriate
action. Table 6 identifies the Fault, Probable Cause and Corrective Action.
Table 6. Fault Isolation
FAULT PROBABLE CAUSE CORRECTIVE ACTION
Leakage at the poppet seat when
closed
Damaged or worn nose seal seat
( IPL Figure 1, 2 and 68)
Check condition and if necessary
replace nose seal seat.
Damaged or worn poppet (20) Check condition and if necessary
replace the poppet.
Damaged or worn O-ring (4) Check condition and if necessary
replace the O-ring.
Damaged or worn shoulder bolt (31) Check condition and if necessary
replace the shoulder bolt.
Leakage past nose seal when
coupled
Nose seal seat (2, 68) damaged Check condition and if necessary
replace the nose seal seat.
Mating flange and locking lugs on
airplane fuel system inlet adapter
damaged or worn
Check the three locking lugs of the
bayonet flange for wear,
straightness, and alignment. If they
are damaged, the airplane inlet
adapter must be replaced.
Leakage past flow control handle
shaft
O-ring (25) or backup ring (26)
damaged, twisted, or incorrectly
installed
Check condition and if necessary
replace the O-ring or backup
ring (26)