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M1 TANK GUIDES

NTC Boresighting & Zeroing
Table of Contents
Rotary Wing

M1A1 and M2/M3 LASER FOOTPRINT

Verified by:
1/4th Inf (OPFOR) CMTC
STRICOM - HIT CODE 07

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M1A1

1. Install one 12 volt Lithium Battery

  1. Place battery into battery pouch.
  2. Connect pigtail adapter into the battery.

Display shall read

ENCODER OK
DECODER OK

Followed by two alternating flashing messages which should read

VEHICLE POWER
REQUIRED
KILL BY SYSTEM
POWER ON

2. Turn on their Master power switches or the TNB Utility Outlet.

The system will automatically run a BIT test. Display will read

STANDBY NOW
RUNNING BIT TEST

Note: If the VDD displays following messages:

Proceed with the next step;

3. Turn OFF their Master Power Switches TNB Utility Outlet.

ALERT REPLACE
MILES-2 BATTERY

4. Disconnect the Lithium Battery and turn in to OC for a fresh battery.

Follow steps one and two above with new battery.



THE VDD - - WHAT IT TELLS YOU

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THE RDA WHAT IT TELLS YOU

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RDA OPERATION
HEAT RNDS

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RDA OPERATION
APDS RND

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RDA OPERATION
COAX

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M1A1 TANK (120MM) MILES BORESIGHTING PROCEDURES

BORESIGHT THE MAIN GUN

NOTE: RECORD GPS ZERO DATA FOR FUTURE REFERENCE

1. POSITION TANK ON LEVEL GROUND, WITH GUN OVER FRONT SLOPE.

2. SET UP 1200 METER BORESIGHT TARGET OR KNOWN TANK TO TARGET RANGE.

3. WITH ENGINE RUNNING, ENSURE HYDRAULIC PRESSURE GAUGE READS 1500-1700 PSI.

4. TURN TURRET POWER ON.

5. SET THERMAL MODE SWITCH TO STANDBY AND PERFORM STEPS 4 & 1 WHILE WAITING FOR COOL DOWN.

6. CLEAN MILES GUN TRANSMITTER LENS.

7. FIRE TRANSMITTER AT A MWLD TO VERIFY THAT YOU ARE COUNTING DOWN AND THE TRANSMITTER IS HITTING.

8. OPEN CCP.

9. TURN COMPUTER ON.

10. SET FIRE CONTROL MODE SWITCH TO EMERGENCY, VERIFY THAT DRIFT IS WITHIN TOLERANCE.

11. SET GUN SELECT SWITCH TO MAIN.

12. SET AMMUNITION SELECT TO SABOT.

13. PRESS CROSS WIND KEY, ENTER 0.0, PRESS ENTER KEY, BUTTON MUST REMAIN LIT.

14. PRESS CANT KEY, ENTER 0.0, PRESS ENTER KEY, BUTTON MUST REMAIN LIT.

15. PRESS LEAD KEY, ENTER 0.0, PRESS ENTER KEY, BUTTON MUST REMAIN LIT.

16. PRESS AMMO SUBDES KEY, ENTER 59, PRESS ENTER KEY. CLOSE COVER.

17. PRESS RANGE KEY ENTER RANGE TO BORESIGHT TARGET, PRESS ENTER KEY. BUTTON MUST REMAIN LIT.

18. PRESS GUNNER OR COMMANDERS PALM SWITCH. THIS INDUCES THE RANGE.

19. SET FIRE CONTROL MODE TO MANUAL.

20. PUSH ZERO BUTTON AND ENTER 0.0, 0.0 AND PUSH ENTER.

21. PRESS BORESIGHT KEY AND ENTER 0.0, 0.0, AND PUSH ENTER.

22. LOOK THROUGH GPS AND MANUALLY MOVE GUN TO BORESIGHT TARGET.

23. INSTALL TRANSMITTER IN THE BREECH, AND ALIGN THE TRANSMITTER SCOPE AS CLOSE TO THE SAME POINT AS THE GPS RETICLE, INSURE IT IS TIGHT.

24. ALIGN TRANSMITTER SCOPE TO BORESIGHT TARGET USING MANUAL TURRET ROTATION AND ELEVATION CRANK HANDLES.

25. USING THE RETICLE ADJUST TOGGLE SWITCH, TOGGLE THE GPS RETICLE BACK TO CENTER MASS OF THE BORESIGHT TARGET.

26. CONFIRM CPS AND MILES RETICLE IS STILL ON THE SAME AIMING POINT ON BORESIGHT TARGET.

27. BORESIGHT IS NOW COMPLETE -- THE OPTICS ARE LINED UP WITH THE BORE -- WE WILL NOW ZERO IN THE BORESIGHT MODE.

ZEROING THE MAIN GUN IN THE BORESIGHT MODE.

1. GUNNER AIMS CENTER MASS OF BORESIGHT TARGET AND FIRES, IF TARGET FLASHES STOP AND GO STEP 3, IF THERE IS NO FLASH MANUALLY MOVE THE GUN AROUND THE TARGET UNTIL IT FLASHES, THEN STOP AND GO TO NEXT STEP.

NOTE: INSURE GUNNERS AND LOADERS RDA'S FUNCTIONS ARE FOLLOWED ACCORDING TO MILES LOADING PROCEDURES. (SEE M1 RDA LOADING.)

2. ONCE STEP ONE IS ACCOMPLISHED, TOGGLE RETICLE SWITCH CENTER MASS OF TARGET.

3. HAVE THE GUNNER AIM MIL LOWER (MOVE GUN DOWN) AND FIRES, CONFIRMING THE HIT.

4. HAVE GUNNER CONTINUE LOWERING HIS AIMING POINT AND CONFIRMING HIS HIT MIL AT A TIME UNTIL HE NEAR MISSES THE TARGET TWICE FIRING AT THE SAME AIMING POINT. THE GUNNER THEN REFERS HIS SIGHT CENTER MASS OF TARGET, USING THE TOGGLE ADJUST SWITCH.

5. THE GUNNER THEN AIMS MIL UP (MOVE GUN UP) AND FIRES, CONFIRMING THE HIT.

6. HAVE THE GUNNER CONTINUE RAISING HIS AIMING POINT AND CONFIRMING HIS HIT MIL AT A TIME UNTIL HE NEAR-MISSES THE TARGET TWICE FIRING AT THE SAME AIMING POINT. NOW THE GUNNER WILL LOOK AT THE TWO POINTS WHERE THE RETICLE IS AND CENTER MASS OF THE TARGET AND DIVIDE THIS AREA IN . NOW MOVE THE RETICLE TO THAT POINT (USING TOGGLE ADJUST SWITCH). THIS IS THE "MEAN" (POINT OF IMPACT) FOR ELEVATION.

7. TO FIND THE MEAN (POINT OF IMPACT) FOR DEFLECTION, DO THE SAME EXCEPT MOVE RIGHT TO LEFT.

8. AFTER GUN IS ZEROED, PUSH ENTER, THEN SQUEEZE PALM GRIPS FOR 2 SECONDS, THEN REFER THE TIS AND GAS (1200 SABOT) TO THE GPS SIGHT AND CLOSE THE CCP DOOR.

9. CHECK THAT THE TIS READY LIGHT IS LIT. WHEN IT IS LIT, SET THERMAL MODE SWITCH FROM STANDBY TO ON.

10. SET FLT/CLEAR/SHTR SWITCH TO SHTR.

11. USING TIS RETICLE AZIMUTH AND ELEVATION BORESIGHT KNOBS REFER TIS RETICLE TO BORESIGHT AIMING POINT.

12. SET FLT/CLEAR/SHTR SWITCH TO CLEAR, ENSURE GPS RETICLE AND TIS RETICLE ARE ALL ON THE SAME AIMING POINT.

13. RECORD AZIMUTH AND ELEVATION KNOB SETTINGS FROM TIS BORESIGHT KNOBS FOR FUTURE REFERENCES.

14. ALIGN GAS WITH BORESIGHT TARGET AIMING POINT, USE GAS AZIMUTH AND ELEVATION KNOBS.

15. SET FIRE CONTROL SWITCH TO NORMAL.

16. USING POWER CONTROL HANDLES, MOVE GPS OFF AND THEN BACK ON THE TARGET IN A G PATTERN. ENSURE MILES RETICLE, GPS RETICLE AND GAS 1200 METER RANGE LINE (APFSDS) ARE ALL ON THE SAME POINT ON THE BORESIGHT TARGET.

17. VERIFY BORESIGHT BY FIRING MAIN GUN AT A MILES INSTRUMENTED TARGET.

NOTE: AFTER COMPLETING TRAINING WITH MILES, ANY DATA TAKEN OUT OF THE COMPUTER MUST BE RE-ENTERED.

SYSTEM PARALLAX FOR THE M1A1 TANK

  • GPS
  • 28 3/4 INCHES TO THE RIGHT AND 20 7/8 INCHES UP.
  • .73 METERS TO THE RIGHT AND .53 METERS UP.
  • TIS
  • 34 5/8 INCHES TO THE RIGHT AND 20 7/8 INCHES UP.
  • .88 METERS TO THE RIGHT AND .52 METERS UP.
  • GAS
  • 12 1/4 INCHES TO THE RIGHT AND 5 INCHES DOWN.
  • .31 METERS RIGHT AND .13 METERS DOWN.

NOTE: IF YOU READ TM 9-2350-264-10-PAGE 2-292 YOU WILL SEE A "NOTE"

IN OPERATIONAL SITUATIONS, THE M1A1 MAY BE BORE SIGHTED AND ZEROED AT ANY KNOWN DISTANCE BETWEEN 200 AND 4000 MATERS. PARALLAX HAS BEEN ELIMINATED IN THE GPS AND TIS. HOWEVER, PARALLAX HAS NOT BEEN ELIMINATED IN THE GAS. THEREFORE, A 1200-METER TARGET IS RECOMMENDED FOR THE GAS.

BORESIGHT/ZERO M-2 .50 CAL MACHINE GUN ON THE M1A1 TANK

1. ENSURE THAT THE M-2 MACHINE GUN HAS BEEN CLEARED OF ALL AMMO.

2. POSITION A MAN WITH A MWLD ON AND GREEN KEY SET TO RESET AT 75-100 METERS IN FRONT OF TANK.

3. BORESIGHT THE M2 HB MACHINE GUN WITH THE ANSERSON/50 CAL. BORESIGHTING DEVICE. ALIGN THE BORE OF THE M-2 MACHINE GUN CENTER MASS OF THE TARGET MAN.

4. POSITION TANK ON LEVEL GROUND WITH GUN OVER FRONT SLOPE.

5. ONCE THE BORE OF THE GUN IS ALIGNED, REFER THE 500 METER AIMING POINT OF THE 50 CAL RETICLE CENTER MASS OF THE TARGET MAN.

6. WITH A DRY FIRE CABLE INSTALLED, FIRE AT THE TARGET, IF THE TARGET MAN IS "HIT" HE WILL SIGNAL.

7. DO NOT MOVE THE GUN, BUT HAVE THE TARGET MAN TAKE A SIDE STEP TO THE RIGHT UNTIL HE HAS A MISS.

8. ONCE HE HAS A MISS, HE WILL THEN MARK THE SPOT, AND MOVE BACK TO THE START POINT.

9. FIRE AT THE TARGET MAN, IF HE IS "HIT" HE SILL SIGNAL, AGAIN DON'T MOVE THE GUN, AND HAVE THE TARGET MAN TAKE A SIDE STEP TO THE LEFT UNTIL HE HAS A NEAR MISS THIS TIME MOVE IN THE OPPOSITE DIRECTION.

10. NEAR MISS HAS BEEN VERIFIED HAVE THE TARGET MAN MOVE TO THE CENTER, AND WITHOUT MOVING THE LAY OF THE GUN, REFER YOUR 500 METER AIMING POINT TO CENTER MASS OF THE TARGET MAN.

11. TO FIND THE ELEVATION, FIRE THE GUN MOVING IT DOWN UNTIL YOU HAVE A NEAR MISS. THIS TIME DON'T MOVE THE GUN. BUT MOVE THE 500 METER AIMING POINT CENTER MASS OF THE TARGET MAN. NOW FIRE THE GUN MOVING UP UNTIL YOU HAVE A NEAR MISS.

NOW MOVE THE 500 METER AIMING POINT HALF WAY DOWN TO THE TARGET MAN. MOVE THE GUN SO THAT THE 500 METER AIMING POINT IS CENTER MASS OF THE TARGET AND FIRE. YOU ARE NOW BORESIGHTED.

BORESIGHT THE COAX

  • AFTER THE MAIN IS BORESIGHTED AND ZEROED IN THE BORESIGHT MODE, TURN GUN SELECT TO COAX.

  • HOLD A MWLD IN FRONT OF MAIN GUN AND FIRE COAX BY TAPING THE COAX MICROPHONE ON A METAL OBJECT.

  • THE LAST STEP IS TO FIRE BLANK AMMUNITION AT A TARGET TO VERIFY THE COMPLETE WEAPON SYSTEM IS FUNCTIONAL.

LOADER'S 240 MG

  • WITH A DRY FIRE CABLE ON THE TRANSMITTER, HOLD A MWLD IN FRONT OF TRANSMITTER AND FIRE TO VERIFY THE TRANSMITTER IS HITTING.

  • HAVE A TARGET AT 50 TO 75 METERS AND FIRE AT TARGET TO DETERMINE POINT OF AIM -- VERY SIMILAR TO 50 CAL ALIGNMENT.

  • THE LAST STEP IS TO FIRE BLANK AMMUNITION TO VERIFY THE COMPLETE WEAPON SYSTEM IS FUNCTIONAL.

NTC Boresighting & Zeroing
Table of Contents
Rotary Wing



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