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PART V

REPAIR

501. GENERAL.

(a) For the purpose of periodic maintenance, service and repair, Major ECM Repair Facilities, Intermediate ECM Repair Facilities, and Minor ECM Repair Facilities have been established at the following locations:

MAJOR ECM REPAIR FACILITIES

Naval Code and Signal Laboratory, Washington, D.C.
Navy Yard New York
Navy Yard Mare Island
Navy Yard Puget Sound
Navy Yard Pearl Harbor
Naval Operating Base Oran
Naval Operating Base Noumea
Naval Operating Base Londonderry
Naval Operating Base Adak
Convoy Escort Base Milne Bay

INTERMEDIATE ECM REPAIR FACILITIES
Navy Yard Boston
Navy Yard Norfolk
Repair Base San Diego
U.S. Naval Drydocks San Pedro
COM 7 - Miami (RMO)
COM 15 - Balboa (RMO)

MINOR ECM REPAIR FACILITIES

Navy Yard Charleston
Navy Yard Philadelphia
Navy Yard Portsmouth, N.H.
Naval Station Coco Solo
Naval Station New Orleans
Naval Operating Base Dutch Harbor
Naval Operating Base Key West
Naval Operating Base Kodiak
Naval Operating Base Newport
Naval Operating Base Norfolk
Naval Operating Base San Juan
Naval Operating Base Sydney
Naval Operating Base Argentia
Naval Operating Base Bermuda
Naval Operating Base Guantanamo
Naval Operating Base Trinidad
Naval Operating Facility
Naval Camp Parera Curacao
Submarine Base Midway
Submarine Base New London
U.S. Coast Guard Yard Curtis Bay, Md.
ASS'T. NAVINDMAN San Francisco
COM 12 San Francisco (Comm. Off.)
COMAIRSOPAC Espiritu Santo (Comm. Off.)
COMNAVEU London (Comm. Off.)

SHIPS

USS AJAX
USS ALCOR
USS ALTAIR
USS ARGONNE
USS BEAVER
USS BLACK HAWK
USS BRIAREUS
USS BUSHNELL
USS CASCADE
USS DELTA
USS DENEBOLA
USS DIXIE
USS DOBBIN
USS EURYALE
USS FULTON
USS GRIFFIN
USS HAMUL
USS HOLLAND

USS MARKAB
USS MAUMEE
USS MEDUSA
USS MELVILLE
USS ORION
USS OTUS
USS PATOKA
USS PELIAS
USS PIEDMONT
USS PRAIRIE
USS PROMETHEUS
USS PROTEUS
USS RIGEL
USS SPERRY
USS VESTAL
USS VULCAN
USS WHITNEY
 
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(b) ECM Repair Facilities are divided into four classes as follows:

(1) Major ECM Repair Facilities, which stock a large quantity of all spare parts available for distribution to other repair activities and are staffed and equipped to make any repair on all types of cryptographic devices used by the Navy.

(2) Intermediate ECM Repair Facilities, which stock a smaller quantity (40% of a Major Facility stock) of all spare parts available for distribution to Minor Repair Activities and are staffed and equipped to do general overhaul and repair work on all types of Naval cryptographic equipment.

(3) Minor ECM Repair Facilities, which have a stock of the more vulnerable parts of the equipment and are staffed and equipped to make inspection and repairs of a minor nature on all Naval cryptographic devices.

(4) Emergency Minor ECM Repair Facilities, which also have a stock of the more vulnerable, parts of the equipment. The parts are supplied to these activities because of the number of cryptographic devices in use at the activity or because of their geographic isolation from an authorized repair facility. They are not staffed or equipped to render inspection or maintenance service on other than their own equipment except in an emergency.

(c) Each repair facility with the exception of the Emergency Minor ECM Repair Facility is prepared for periodic overhaul of the ECM, and insofar as possible, has been provided spare machines in order that a ship can exchange its machine for a thoroughly re-conditioned machine.

(d) The above ECM Repair Facilities are provided with the "Repair and Maintenance Instructions", Blueprints, Parts Catalogs, etc. and service personnel attached thereto have attended a course of instruction at an ECM training school.

502. TRAINING SCHOOLS.

(a) Schools for the instruction and training of personnel in the repair and maintenance of cryptographic machines are maintained at each of the Major ECM Repair Facilities. Instruction of three weeks duration is given for the purpose of training personnel attached to an individual activity in the technique of cleaning, oiling and performing emergency repairs, utilizing the Spare Parts Box (ENG 109) supplied with each ECM. Two or three day "appreciation" courses are available for communicators to familiarize them with the general mechanical operation, oiling and cleaning of the ECM.

(b) Commanding officers are urged to nominate trustworthy personnel for these schools. Arrangements should be made by directly contacting the Major Repair Facility.

(c) In addition to the Major ECM Repair Facilities, schools are located at the following points:

ECM Repair Facility, Boston
ECM Repair Facility, Norfolk
 
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503. QUALIFIED AND AUTHORIZED REPAIR PERSONNEL.

(a) Personnel who satisfactorily complete the full course at an ECM training school are issued the card illustrated below. Personnel from a repair facility should be required to present this card and the standard Navy Identification Card before being allowed to service the machine. Holders of qualification cards who are not assigned to duty at authorized ECM Repair Facilities are normally authorized to perform only routine cleaning, oiling and emergency repairs to the extent of the tools and parts available in the ENG 109. The services of the personnel at established ECM Repair Facilities should be utilized to the greatest practicable extent for monthly inspections and major overhaul. Unsatisfactory performance of duties by any card holder should be reported to the Bureau of Ships, Code 945.

Authorization card, United States Navy, (Name), (Signature), is qualified and authorized to service equipment in accordance with CPSM 390., (Serial No.), (Validating Officer), (Date of Issue), Activity

504. EMERGENCY REPAIRS.

(a) When the ECM requires attention, either for routine inspection, emergency repairs, overhaul, adjustment, etc., service should be requested from the nearest ECM repair facility. Experience has shown that cryptographic machines have suffered more from attempted repairs by inexperienced personnel than from wear and tear, therefore, routine tests and overhauls should be undertaken only by experienced personnel.

(b) It is realized that in many cases the above procedure is not a satisfactory solution to an immediate problem and emergency repairs will have to be effected, if at all possible. The emergency repair instructions given herein are written for the individual who has not had a course of instruction, therefore, they contain no information on adjustment tolerances, repairs requiring special tools, etc. Any emergency repairs effected should be rechecked as soon as practicable in an ECM repair facility.

(c) The effecting of emergency repairs is chiefly a matter of common sense. The decision is the responsibility of the Commanding Officer. For example, with tender facilities available, it would be undesirable to subject the machine to possible mistreatment at the hands of inexperienced personnel. On the other hand, if the machine breaks down while at sea, the ship's force should attempt any repair considered to be within its capabilities, even at the risk of further damage. Reasonable effort must be made to keep the machine in operation.

505. SPARE PARTS BOX (ENG 109).

(a) A Spare Parts Box (ENG 109) has been issued to each activity holding the ECM. The parts included are those required for repairs and maintenance normally considered to be within the capabilities of the ship's force.

 
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(b) The contents of the Spare Parts Box (ENG 109) has been revised from time to time. Each Spare Parts Box currently contains the following items:

Part No. Description QTY.
4840 Double end wrench 1
70169 Hand tape moistener 1
72755 Wick for Hand tape moistener 1
75765 Spring hook - pull 1
76084 Friction disc - felt 6
76280 Capstan wrench 2
82285 Resistor, 300 ohm 1
88265 Retaining Bushing 12
88448 Plunger contact assembly 12
88993 Contact burnisher 1
91755 Power switch 1
100013 Print hammer 1
100076 Type wheel 1
100121 Print hammer insert - rubber 6
100129 Friction clutch washer 5
100141 Tape feed pawl 1
100212 Clutch throwout lever 1
100260 Stepping magnet 1
100600 Unwired code wheel 1
100645 Capacitor - 2 mfd. 1
100646 Capacitor - 1 mfd. 1
100648 Resistor - 100 ohms 1
100649 Fuse - 5 amp 5
100688 One drop Oiler 1
100709 Wrench set - Williams 1
100895 ENG 109 Container - metal 1
100919 Fuse - 10 amp 5
100945 Wire #20, 15-foot roll 1
100972 Clutch spring 1
100973 Cleaning block (with canvass) 1
100978 Canvass belt for cleaning block 1
100982 Screwdriver - 6 inch 1
100983 Oil - 8 oz. can 1
100984 Grease - 2 oz. tube 1
108095 Nut, 4-40 6
108101 Screw 4-40 flat head 6
108102 Screw 3
108261 Plunger tool 1
108663 Contact spring 1
110426 Clutch magnet complete (old number M-222) 1
110437 Spring (old number 35-70) 1
 
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EMERGENCY REPAIRS

506. ZEROIZING.

(a) Condition: Code Wheels will not zeroize.

(b) Probable cause:

(1) The zeroizing springs are bent out of adjustment. The cam-lobes (see plate BA) are so situated that, when the Code Wheel is aligned to "O", the spring contact of the zeroizing contact will be shifted to open the circuit. Bend the zeroizing spring of the faulty Code Wheel position back into shape, using the others as a guide. Turn the Code Wheel by hand and observe the action of the cam-lobe against the spring contact until the cam-lobe opens the spring contact.

NOTE: If any of the Code Wheels EXCEPT the center Code Wheel of the Stepping Maze and the one immediately to its right (#3 and #4) fail to zeroize, they may be zeroized by hand. If #3 and #4 Code Wheels of the Stepping Maze will not zeroize DO NOT USE THE MACHINE UNTIL CORRECTED.

507. CODE WHEELS OF STEPPING MAZE.

(a) Condition: None of the Code Wheels of the Stepping Maze step.

(b) Probable cause:

(1) The Stepping Timing Contact may be dirty or out of adjustment (See Plate 6). When the main shaft is at rest, this contact is held open, but is closed immediately alter the main shaft commences to turn. Shift to emergency hand power operation (para. 325) and slowly turn the main shaft and observe the action of this contact. Clean the contact and if necessary bend the spring so it will make contact properly.

508. CODE WHEELS OF ALPHABET MAZE.

(a) Condition: None of the Code Wheels of the Alphabet Maze will step.

(b) Probable cause:

(1) A Code Wheel or Index Wheel may be turned "half way" so that the circuits are not completed.

509. KEYLEVER FAILURE.

(a) Condition: All of the Keylevers are inoperative.

(b) Probable causes:

(1) The Print Timing Contact (See Plate 6) may not be making contact. When the main shaft is at rest, this contact is closed, but opens immediately alter the main shaft commences to turn. Clean the contact and if necessary bend the contact spring so the contact is closed in the normal unoperated position of the main shaft.

(2) The Clutch Magnet circuit may be open. Examine the connections from the magnet winding to the solder lugs.

(3) The spring attached to the clutch stop lever above the casting on the right hand end of the main shaft may have come off the spring post. Replace the spring.

 
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(c) Condition: A single Keylever fails to print on "P" (Plain).

(d) Probable causes:

(1) A Printer magnet may be shorted or burned out or the circuit may be broken, 1.1 a Printer Magnet becomes shorted, the printing associated with that magnet will be smudged, but otherwise the operation of the machine is unchanged. if a printer magnet circuit is open, the machine will fail to operate each time a keylever is pressed which should result in the energizing of that magnet. The Printer should not be opened because special tools are required for re-assembly. The best practice to follow in case of an opened printer magnet or circuit is to type slowly, making sure each Keylever depressed operates the Printer. When the depressing of a key fails to operate the Printer, press the "Blank Key". This will produce a blank on the tape which will have to be filled in later, but the machine will be in step for succeeding letters. The letter to be filled in is determined by the letter failing to print when typing plain.

(2) On encipherment or decipherment the failure of a letter to print (when all letters print properly on plain) almost always is caused by a contact failure through the Alphabet Maze. Clean the contacts. Examine the Code Wheels for bad connections. Hold the Keylever down and "wiggle" the Code Wheels. The best practice is to press the Blank Key or another Key which will produce a one-letter garble which ordinarily is capable of being cleared by inspection.

(3) A Controller contact may be operating improperly.

510. MOTOR FAILURE.

(a) Condition: The motor fails to start.

(b) Probable causes:

(1) Fuses, are burned out. Unscrew the fuse holder and remove the fuses. Replace the fuses with new fuses and replace the holder.

NOTE: If a fuse "sticks" in the holder, remove the cover (two screws in front, one at each side and one in the rear, inside the case). Take a small stiff wire and punch the fuse out by inserting the end of the wire through the hole in the solder lug at the bottom of the fuse-holder.

(2) The switch which controls the motor is located on a bracket attached to the top of the Controller and is turned on and off by a mechanical link to the Controller shaft. Check the relative position of the switch to insure that it is actually snapped when the Controller handle is turned away from "O" (Off).

511. 26-30 LETTER CHECK.

(a) Condition; The 26-30 Letter Check is not produced.

(b) Probable cause:

(1) Try the Stepping Check of para. 308 and observe the stepping of the Code Wheels of the Stepping Maze. The zeroizing contacts of the #3 and #4 Code Wheels have an additional contact spring for the purpose of producing the automatic stepping of the Code Wheels. (See para. 203(d) for Stepping Control). When the cam-lobe of the Code Wheel engages the contact spring, it should be held away from the contact spring nearest the Code Wheel and should be in contact with the spring nearest the front of the machine.

 
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512. PRINTING.

(a) Condition; Printing on the tape is smudged, or indistinct.

(b) Probable causes:

(1) The type wheel is turned by a friction clutch composed of two felt washers separated by the drive gear and retained by a flange of the printer shaft on the forward side and a friction disc at the rear. Should this assembly become loose, or the friction washers worn, the type wheel will not be turned fast enough or will not be held motionless during the printing of a character. Part No. 76084 is the replacement part. Part No. 76280 Is the Capstan wrench for use with the printer. To replace the friction washers:

(A) Disconnect the power from the machine and remove the Cipher Unit. Remove the cover (two securing screws are located on the front at the sides of the cover and one is located inside the cover at the rear). Engage the hand drive, manually trip the clutch and rotate the main-shaft until the stepping drive bars have reached their maximum forward travel. Remove the bracket from the right top of the printer and disconnect the two Jones receptacles at the top left of the printer. Remove the two screws through the rear feet of the printer and remove the two nuts from the studs through the front feet of the printer. Raise the printer until the front feet clear the studs and withdraw the printer from the machine.

(B) Using a 3/4 inch wrench and the Capstan wrench, remove the locking nut and spring seat from the rear end of the printer shaft. Remove the friction disc and felt washer, the drive gear and front felt washer, and replace with new washers which have been saturated with light oil.

(C) Reassemble in reverse order. When replacing the drive gear on the printer shaft the recess in the gear should face away from the printer so that the recess will hold the rear friction washer centrally with respect to the shaft and away from the threads of the shaft.

(D) Re-install the printer. Hold the printer so the print hammer follower and feed pawl followers are in line with their associated cams, and so the holes in the front feet are in line with the mounting studs. Lower the printer carefully, making sure that the feed shift lever and keeper straddle the feed shift arm. Take up the play of the printer toward the rear and to the right and tighten the printer mounting screws and nuts. Insert the printer receptacles and fasten the retainer arm. Re-fasten the bracket to the right top of the printer.

(E) Manually trip the clutch and slowly turn the main shaft several times and observe that all mechanical action takes place smoothly.

(F) Connect the machine to power. Set the Controller at "P" (Plain) and the Zeroizer to "Operate". Depress any key. Tighten the spring seat until the printing on the tape becomes legible.

(2) if the "M" and "W" are not distinctly printed at the outer edges, it may be that the Print hammer insert is not wide enough on the striking surface. Replace with a new insert. If only one side of the letter is printed, make the adjustment of the following paragraph.

(3) if the typewheel is broken or no longer serviceable and is to be replaced, remove the three screws which hold it to the typewheel shaft. Remove the damaged typewheel and replace it with a new one, reinstalling the screws. The screw holes are so placed that the typewheel will fit only one way. Barely tighten the three screws and alternately type "M" and "W". If necessary, loosen the screws, shift the typewheel in the proper direction and retighten the screws. (Caution: Don't twist the screws off.)

(4) if the letters tend to print one on top of another, it may be the paper tape is not free to unwind, properly. The tape retainer may be bent causing undue pressure against the paper roll. The tape feed rollers may not mesh properly or may not have sufficient tension to advance the tape.

(5) A tendency for the paper roll to unwind too fast may be overcome by slightly bending a section of the tape retainer.

 
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513. SPARK SUPPRESSORS.

(a) Condition: Excessive sparking at the timing (Stepping and Printing) contacts at the main shaft.

(b) Probable cause: Excessive spark at the timing contact (Printing) may be caused by failure of the spark suppressor circuit which is composed of a resistor, 400 ohms, and a capacitor, 1 mfd., located to the rear of the keylevers. The capacitor of the timing contact (Printing) is the one located next to the base. To test for failure see para. (e).

(c) Excessive sparking at the timing contact (Stepping) may be caused by failure of the spark suppressor circuit which is composed of a capacitor, 2 mfd., located on top of the one mfd. capacitor referred to in part (b) above. To test for failure see part (e).

(d) To test the resistor, measure the resistance with an ohmmeter.

(e) To test the capacitor:

(1) Disconnect the power lead from the source of power.

(2) Disconnect the brown wire from the clutch magnet. Using a 50,000 ohmmeter touch both terminals of the 1 mfd. capacitor and watch the pointer of the ohmmeter. There should be a momentary deflection of the pointer alter which it should rest at infinite ohms. Reverse the leads of the ohmmeter and repeat the operation. If there is not a momentary deflection of the pointer of the ohmmeter or if the pointer does not rest at infinite ohms the capacitor should be changed. Disconnect the terminals of the 2 add. capacitor and test it in the same manner. Replace all leads.

(f) It is realized the above test is not a conclusive test, and is given only because an ohmmeter is generally available, whereas a capacitor tester generally is not. If a capacitor tester is available, it should be used to test the capacitor in lieu of the above tests.

514. CODE WHEELS.

(a) Condition: Code Wheel contacts badly pitted or worn, path between contacts indicates sparking between contacts has occurred.

(b) Probable cause:

(1) Any of the above conditions may be caused by failure of the spark suppressors circuit of the Printing Contact of the main shaft. See para. 513(b).

(c) If a Code Wheel is defective, the best procedure is to exchange the defective set for another set at the nearest Issuing Office which in turn will send the defective set to the nearest ECM Repair Facility for repair. The defective set of Code Wheels should be suitably tagged, indicating the defective Code Wheel, and in such a manner that the defective set will not accidentally be issued before being repaired. If the set cannot be exchanged, the Code Wheel should be repaired locally.

(d) To repair a Code Wheel:

(1) Make a diagram of the wiring, and, if a cam-contoured Code Wheel, the cam-contours.

NOTE: These diagrams shall be classified TOP SECRET, and shall be placed in the custody of a commissioned officer. The diagrams shall be destroyed immediately alter a successful test of the repaired Code Wheel.

(2) Unsolder the wires from the solder lugs of the defective face. As much as possible keep them in their relative positions.

(3) Remove the four screws from the face and lift the defective face from the Code Wheel. Remove the corresponding face from an unwired Code Wheel (Part No. 100600 In the Spare Parts Box) and place it on the Code Wheel, making sure that the cam-lobe of the unengraved face is opposite "H" and "I" of the engraved face.

 
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(4) Resolder the wires.

(5) For cam-contoured Code Wheels, the cam-contours must be added, it is necessary that these be accurately placed. Mark on the Code Wheel the points at which cam-contours are to be added. Cam-contours can be filed into the face with a circular file.

(6) Test the Code Wheel by making several different 26-30 Letter Checks. (For cam-contoured Code Wheels choose Code Wheel Arrangements utilizing the repaired Code Wheel in the center (#3) position).

(7) if both faces must be replaced it is better to repeat the operations for the second face rather than to Individually unsolder each wire from the defective Code Wheel and resolder it on the new one.

(e) Obtain another spare Code Wheel for the Spare Parts Box by ordering it from the most convenient ECM Repair Facility.

515. MOTOR ADJUSTMENT.

(a) The Condition: Machine runs sluggishly, the motor labors, the hand drive operates with difficulty.

(b) Probable cause:

(1) The mesh of the motor pinion and the main shaft drive gear is "too close". The best method of adjustment is to shift to hand drive operation. Adjust the motor adjusting screw until effort is required to turn the main shaft, then back off slightly.

516. CLUTCH MAGNET.

(a) A spare clutch magnet is included in the Spare Parts Box, but replacement should not be attempted unless the operator has had training in the replacement. The adjustments required in making a replacement require certain tolerances, some of which are rather critical and unless the operator has been trained and the proper tools are available, it is very difficult to make a repair.

517. RECHECKS REQUIRED.

(a) It is emphasized that the repair operations given in this part are for reference only in the event emergency repairs are required and the services of an ECM Repair Facility are not available. In each instance of an emergency repair, it should be re-checked at the first available opportunity by an ECM Repair Facility.

518. ADJUSTMENT SPECIFICATIONS.

(a) The following tabulation of adjustment specifications is provided for the convenience of repair personnel. It is to be used only by qualified ECM repairmen (holders of CSPM 390 qualification cards - see para. 503).

 
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ADJUSTMENTS
ASSEMBLY PARTS INVOLVED Min. Max. Type*
Keylever Contacts
Universal Bar and Keylevers .050 .075 Clearance
All Contacts, less "RPT" and 1-5 outer .040 .050 Gap
1-5 Keylever outer Contacts .020 .030 Gap
"RPT" Keylever Contact .010 .020 Clearance
Universal Contact .015 .025 Gap
Clutch Contacts
Inner Contact .015 .025 Gap
Outer Contact .025 .040 Gap
Roller and Contact Spring .025 .045 Clearance
Clutch Mechanism
Armature and Field Yoke .010 .020 Clearance
Armature Lever Latching Extension and Clutch Stop Lever Latching Extension (stop position) (old) .006 .010 Clearance
Armature Lever Latching Extension and Clutch Stop Lever Latching Extension (reset position) (old) .015 .025 Clearance
Armature Lever Latching Extension and Non-Repeat Latch (stop position) (New) .002 .006 Clearance
Armature Lever Latching Extension and Clutch Stop Lever Latching Extension (reset position) (New) .004 .010 Clearance
Clutch Throwout Lever Extension and Clutch Stop Lever Adjustment Screw .004 .010 Clearance
Main Shaft
Clutch teeth .020 .035 Clearance
Channel cam and Stepping Bell Crank Roller .006 --- Clearance
Timing Contacts
Print Contact only (old) .005 .015 Clearance
Stepping Contact only (Old) .030 .045 Gap
Both Contacts (New) .006 .015 Clearance
Both Contacts (New) .015 .025 Gap
Stepping Magnets, Drive Bars and Pawls
Armature and Armature Back-Stop .050 .060 Clearance
Armature and Stepping Pawl Latch Adjusting Screw --- .006 Clearance
Stepping Pawl, latching clearance .030 .045 Clearance
Zeroize Contacts
Contact Springs of #3 and #4 Zeroise} .035 .050 Clearance
Contacts (Stepping) and Code Wheel} .015 .025 Gap
Printer Tape Feed Mechanism
Tape Feed Pawl and Ratchet, Controller at "R" .015 .025 Clearance
Tape Feed Pawl and Ratchet, Controller at "E" .010 --- Clearance
Tape Feed Pawl and Ratchet, Controller at "R" .010 --- Clearance
Torque - Tape Feed Shaft 10 to 12 oz. Torque
 
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ADJUSTMENTS
ASSEMBLY PARTS INVOLVED Min. Max. Type
Printer Stop Pins
Stop Pin and Stop Pin Latch 1/64" --- Clearance
Typewheel
Torque - Typewheel Shaft 14 to 17 oz. Torque

CSP 1600
Contact Operating Arm
Contact operating arm and bottom of cam-contour .020 --- Clearance
Stepping Contacts
Contact operating arm and contact spring .006 .010 Clearance
Contacts .015 .020 Gap

519. STEPPING CHECKS.

(a) The following chart provides a means of checking the operation of the machine through the first ten-thousand (10,000) steps from the zeroize position.

(b) To make the Stepping Check

(1) Using CSP 1336 (ECM Code Wheel Set C31 to C4), arrange the Code Wheels according to the following Arrangement

Alphabet Maze: 31-32-33-34-35 (All Code Wheels normal,
Stepping Maze: 36-37-38-39-40 (none reversed.

(2) Set the Index Wheels to the following Index Wheel Setting:

18-26-33-43-51

(3) Zeroize.

(4) Set the Controller at "E" (Encipher), and the Zeroizer to "Operate".

(5) Withdraw the paper tape, and reset the Counter to zero.

(6) Using the "Blank" Key, step the Code Wheels, comparing the Alignment of the Code Wheels at the step numbers listed on the chart.

 
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STEPPING CHECK TABLE

CODE WHEEL SETTINGS

Code Wheel Set CSP 1336 (C31-C40)
Alphabet Maze: 31 32 33 34 35
Stepping Maze: 36 37 38 39 40
Index Maze: 18 26 33 43 51

CODE WHEEL ALIGNMENTS

STEP
NO.
ALPH.MAZE STEP.MAZE STEP
NO.
ALPH.MAZE STEP.MAZE
0 OOOOO OOOOO 28 UZTWZ ONMMO
1 NONNN ONNNO 29 TYTVY ONLMO
2 MONNM ONMNO 30 TYSUY ONKMO
3 LOMMM ONLNO 40 NTLMS ONAMO
4 KNLMM ONKNO 50 FMGGP ONQMO
5 KMKML ONJNO 60 ZEZBI ONGLO
6 JLJLL ONINO 70 TXTXF ONWLO
7 JLIKK ONHNO 80 MTNQZ ONMKO
8 ILHKK ONGNO 90 ENGLS ONCKO
9 HKHKJ ONFNO 100 ZGBCP ONSKO
10 GKHJI ONENO 200 HCHSN ONWGO
11 FJGII ONDNO 300 TRUIK ONACO
12 EJFHI ONCNO 400 DNGAM ONEYO
13 EJEGI ONBNO 500 PBOPM ONIUO
14 DJEFH ONANO 600 AUVGL ONMQO
15 CIDEH ONZNO 700 HGJVP OMQNO
16 BHCEH ONYNO 800 PCSSN OMUJO
17 AGCEH ONXNO 900 WVEML OMYFO
18 ZGBEG ONWNO 1,000 ILOGK OMCBO
19 YFADG ONVNO 2,000 EFPWI OLQPO
20 YEZCG ONUNO 3,000 EWIVO OJECO
21 YDYBF ONTNO 4,000 HCGSE OISQO
22 YDXAE ONSNO 5,000 VSBGP OGGDO
23 YCWZD ONRNO 6,000 SVQUG OFURO
24 XCWYC ONQNO 7,000 VOHMY ODIEO
25 WCWXB ONPNO 8,000 TPPCV OCWSO
26 VBVXA ONONO 9,000 JROHC OAKFO
27 UAUXA ONNMO 10,000 ZSRBB OZYTO
 
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Photo of ECM with cover off showing interior parts.
PLATE 5
 
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Photo of ECM with cover off showing interior parts.
PLATE 6
 
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Photo of ECM from bottom showing interior parts.
PLATE 7
 
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Photo of cipher unit with code wheels.
PLATE 8A - CIPHER UNIT
Photos showing the pawl and indicator plugs shown in the Normal (Plate 8(B)) and Emergency (Plate 8(C)) operations.
PLATE 8
 
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Photo of printer unit assembled.
PLATE 9A - PRINTER
Photo of PRINTER UNIT (Opened)
CAUTION: Under no circumstances will the Printer Unit be opened by inexperienced personnel.

PLATE 9 B - PRINTER UNIT (Opened)


PLATE 9
 
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Photo STEPPING MAGNET ASSEMBLY
PLATE 1OA - STEPPING MAGNET ASSEMBLY
Photo of TAPE MOISTENER and CUTTER being used to piece together a message.
PLATE 10B - TAPE MOISTENER and CUTTER
PLATE 10
 
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Theoretical Wiring Diagram for CSP 889
PLATE 11
 
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BLANK
 
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 CCM MARK 1 - CSP 1600 rotor cage and code wheel.
PLATE 12A - CCM MARK 1 - CSP 1600
Photo of CONTACT ARMS and CONTACTS
PLATE 12B - CONTACT ARMS and CONTACTS
PLATE 12
 
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