CSP-HMI-3 MD Helicopters, Inc.
MAINTENANCE MANUAL
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Revision 14
95-30-00
The information disclosed herein is proprietary to MD Helicopters, Inc.
Neither this document nor any part hereof may be reproduced or transferred to
other documents or used or disclosed to others for manufacturing or any other
purpose except as specifically authorized in writing by MD Helicopters, Inc.
Copyright © 1999−2016 by MD Helicopters, Inc.
ALUMINUM ALLOY, CORROSION
RESISTANT STEEL (NOTE 3)
DUCT TAPE
(NOTE 5)
NYLON TUBING
(NOTES 5 & 6)
FIREWALL FITTING,
FORWARD SIDE
ROLLING
HITCH
NOTE 6
UNION AND NUT
FIREWALL FITTING
AFT SIDE
CORROSION RESISTANT
STEEL TUBING
G95-3004-2B
FIREWAL
L (TYP)
NUT
(NOTE 7)
Figure 404. Torque and Engine Oil Pressure Indicating System (Sheet 2 of 2)
(2). Aft Tube Section (Corrosion-Resistant
Steel):
(a). Open left engine compartment access
door.
(b). Remove attaching hardware (Ref.
view D).
(c). Disconnect pressure line nuts at
plenum chamber pan and engine oil
pressure port fittings (Ref. views E,
A).
B. Engine Oil Pressure and Torque Gauge
Pressure Line Installation
Consumable Materials
(Ref. Section 91−00−00)
Item
Nomenclature
CM720 Tape and activator, vinyl
CM807 Twine, nylon
NOTE: At replacement, use 3/16 inch (4.76
mm) diameter nylon forward tube section
line. After replacement, pressure and leak
test assembled lines between engine and
gauge at 200 psi (1379 kPa).
(1). Forward Tube Section (Nylon)
:
(a). Remove covers from pressure line
and gauge fitting.
(b). Connect pressure line to gauge.
Connect bleed valve at oil pressure
port.
(c). Route line along center canopy
frame, and connect line to bulkhead
at upper frame of canted Sta. 78.50.
(d). When installing 3/16 inch (4.76 mm)
diameter nylon line, route line aft
through bulkhead hole to plenum
chamber pan fitting and torque to
10 - 15 inch-pounds (1.13 - 1.69
Nm).
(e). Pull-test forward tube section (Ref.
369A8010 Engine Oil Pressure and
Torque Gauge Tubing Pull Test).
(f). Secure line next to static pressure
line, using canopy frame slots and
nylon straps, or tying twine (CM807).
(g). After pressure and leak test, reinstall
instrument panel fairing.
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