MD Helicopters 369D - Page 219

CSP-HMI-3MD Helicopters, Inc.
MAINTENANCE MANUAL
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95-30-00
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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.