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![]() TM 9-2320-363-20-2 
CONSTANT AIR JUNCTION BLOCK REPLACEMENT (CONT) 
3. 
INSTALL CONSTANT AIR JUNCTION BLOCK (5), TWO CAPSCREWS (11), TWO WASHERS (12), AND TWO 
NEW KEP NUTS (13). 
NOTE 
Step 4 is for M915A2 only. 
Step 5 is for all except M915A2 only. 
4. 
CONNECT SIX TUBES (14) TO CONSTANT AIR JUNCTION BLOCK (5). 
5. 
CONNECT FIVE TUBES (15) TO CONSTANT AIR JUNCTION BLOCK (5). 
6. 
POSITION TACHOGRAPH PANEL (16) AND INSTALL FIVE TORX SCREWS (17), DASH TOP COVER (18), AND 
SIX TORX SCREWS (19). 
4-520 Change 3 
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