ICA-D212-725 (28)
Page 28 of 48
CHAPTER 28 – FUEL SYSTEM (28-00-00)
COPYRIGHT
2007 BY DART AEROSPACE LTD.
THIS DOCUMENT IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED FOR ANY PURPOSE OR COPIED OR COMMUNICATED TO ANY
OTHER PERSON WITHOUT WRITTEN PERMISSION FROM DART AEROSPACE LTD.
Revision:
6
Date: 13.08.26
28.15.3 Repair
For cartridge repair. return cartridge to:
Airborne Aviation Products Group
711 Taylor St.
Elyria, Ohio 44035
28.15.4 Installation
MATERIALS REQUIRED
NUMBER NOMENCLATURE
C-008 Petrolatum
C-405 Lockwire
28.15.4.1 Lubricate packings (9 and 10, Figure
28-8) (furnished with new cartridge) with
petrolatum (C-008).
28.15.4.2 Using hand pressure, install cartridge
in pump housing with arrows aligned on flanges
(within ± 3°).
NOTE
Special cartridge removal tool, P/N E2-10-1, may
be used as a work-aid during installation. Do not
impact cartridge for damage to parts may result.
28.15.4.3
Secure cartridge in pump housing with
retaining ring (5).
28.15.4.4 Install drain valve (6) in cartridge boss
with retaining ring (5).
28.15.4.5 Rotate valve locking bar (1) over
cartridge and in line with negative (-) terminal.
28.15.4.6 Insert white negative (-) lead terminal
under bar and secure both with allen screw
(2).
28.15.4.7 Connect black positive (+) lead terminal
to positive (+) terminal on cartridge; do not over-
torque.
28.15.4.8 Secure drain valve (6) to allen screw (2)
with lockwire (C-405).
28.15.4.9 Pressure test system per paragraph
28.7.
28.15.4.10 Connect battery.
CAUTION
CARTRIDGE PUMPS ARE COOLED AND
LUBRICATED BY FUEL WHICH EXITS THROUGH
TOP UMBRELLA CHECK VALVE ON
PUMP/CARTRIDGE HOUSING. DO NOT RUN
DRY.
28.15.4.11 Perform fuel boost pump operational
check as follows:
28.15.4.11.1 Ensure both boost pumps are covered
with fuel. Refuel helicopter as required.
28.15.4.11.2 Connect battery and/or external power
supply.
28.15.4.11.3 Turn BATTERY switch ON (BHT-212-
FM) and close FUEL BOOST pump circuit breaker.
Turn applicable boost pump switch ON. Check gage
for adequate pressure from pump under test with
remaining pump inoperative (paragraph 28.3).
(AC power must be ON)
28.15.4.11.4 Check exterior of boost pumps for
evidence of leakage.
28.15.4.11.5 Turn BATTERY switch OFF.
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