TM 1-1520-238-23
6-397
6.90.
MAIN ROTOR DE-ICE POWER DISTRIBUTOR AND AIR DATA SYSTEM (ADS) MAST
REMOVAL/INSTALLATION – continued
CAUTION
Main rotor blades are individually cali-
brated to de-icing system controller. En-
sure blade serial number and power
distributor connector number are
installed as recorded during removal.
Failure to maintain proper de-ice system
adjustment will damage heater elements.
NOTE
Ensure paint stripe is alined for ADS
alinement.
d. Install distributor (36). Torque eight bolts (38) to
20 INCH-POUNDS.
(1) Attach lockwire to end of wires (6) and har-
ness (22). Use wire (item 224, App F).
(2) Feed lockwire, wires (6), and harness (22)
through standpipe (40).
(3) First repairer support distributor (36). Second
repairer pull lockwire, wires (6), and harness
(22) through distributor (36).
(4) Remove lockwire.
(5) Lower distributor (36) on drive plate (37) and
ensure key slot (46) engages key (47) in
standpipe (40).
(6) Install eight bolts (38) and washers (39).
(7) Torque eight bolts (38) to 20 INCH-POUNDS.
Use torque wrench.
(8) Apply continuous bead of sealing compound
around outer edge of distributor (36) and
drive plate (37). Use sealing compound
(item 177, App F).
(9) Coat heads of eight bolts (38) with sealing
compound.
Use
sealing
compound
(item 177, App F).
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22
37
39
36
M04-2984-19
38
47
40
46
6
