MD Helicopters 369-500, Maintenance Instructions Manual

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CSP-HMI-3
MD Helicopters, Inc
.
MAINTENANCE MANUAL
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95-30-00
Page 901
Revision 7
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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.
POWER TRAIN INSTRUMENTS
INITIAL INSTALLATION
1. Analog Digital TOT Indicator Initial
Installation
(Ref. Figure 901) The 369D24513-1 digital
TOT indicator, certified for use only on
helicopters equipped with the 250-C20R/2
engine, is used for more accurate TOT read­
ings. The following procedure is for installa­
tion of the TOT indicator.
NOTE:
D
There are three different TOT indicator
installations. Ensure proper S/N effectiv­
ity of helicopter when installing wires.
D
If proper pin crimper is not available, sol­
der wires into pins (Ref. Sec. 96-00-00,
Repair/Replacement of Connectors).
(1). Remove instrument panel covers for
access to instruments and wiring.
(2). Disconnect and remove TOT gauge and
resistor board assembly.
(3). Refer to Section 96-00-00 for locations
of terminal blocks, modules and
plug/junctions.
(4). Install digital TOT gauge in instrument
panel.
(5). Connect P5 to TOT gauge.
A. 369E S/N 384 & Subs − 500N S/N 001 &
Subs:
(1). Route TOT1A22 to TB503-1 (front of
instrument panel), install socket
(M39029/22-191) and insert in G.
(2). Route TOT2A22N to E31 (front of
instrument panel), install socket
(M39029/22-191) and insert in H.
(3). Route TOT3A22N to E35 (front of
instrument panel), install socket
(M39029/22-191) and insert in D.
(4). Route TOT4A22 to TB503-3 (front of
instrument panel), install socket
(M39029/22-192) and insert in D.
(5). Install a M22758/32-22 jumper wire
from TB503-1-C to TB503-1-E using
sockets (M39029/22-191).
(6). Route E1141B20 to P1202 (in battery
compartment).
(a). Install pin (M39029/32-480) on the
white (chromel) wire and insert into
P1202-K.
(b). Install pin (M39029/32-479) on the
green (alumel) wire and insert into
P1202-N.
B. 369E S/N 001 − 383:
(1). Route TOT1A22 to TB503-8 (front of
instrument panel), install socket
(M39029/22-191) and insert in M.
(2). Route TOT2A22N to E31 (front of
instrument panel), install socket
(M39029/22-191) and insert in H.
(3). Route TOT3A22N to E31 (front of
instrument panel), install socket
(M39029/22-191) and insert in B.
(4). Route TOT4A22 to TB503-2 (front of
instrument panel), install socket
(M39029/22-191) and insert in F.
(5). Modify existing wires from TC300 as
follows:
(a). Remove wire lug from E10A16
(chromel) wire and install socket
(M39029/32-245); insert in P5-F.
(b). Remove wire lug from E10A16
(alumel) wire and install socket
(M39029/32-244); insert in P5-G.
C. 369D S/N 001 & Subs:
(1). Route TOT1A22 to the 3-Pack instru­
ment cluster, install lug (MS25036-103)
and attach to IGN.
NOTE:
TOT2A22N and TOT3A22N are termi­
nated into the same (MS25036-103) lug.
(2). Route TOT2A22N to the 3-Pack
instrument cluster, install lug
(MS25036-103) and attach to GND.