Light Crimp

7/26/2019 Light Crimp

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Figure 1

Connector Kits 492643–[ ] (62.5/125 m), 1278079–[ ](50/125 m), and 1588291–[ ] (50/125 m) aredesigned for use with 125–

m multimode glass fiber

optic cable. Connector Kit 1693276–1 is designed foruse with 125–

m singlemode fiber. All of these kits

can be used with any of the following media exceptwhere indicated.

5.1.

5.2.

5.3.

Use for multimode fiber only.

DO NOT use with singlemode fiber.

Any jacketed cable used with SC connectors mustallow for the axial movement of the buffered fiber inthe jacket which occurs when the connector is matedto another connector or device. Certain cableconstructions do not allow axial movement and arenot suitable for use with SC connectors. Refer toInspection Specification 129–1496 for a method ofdetermining whether a given cable constructionallows axial movement (result of the buffer pull testshould measure less than 2 lbf).

5.4.

5.5.

Refer to the referenced paragraphs for assemblyprocedures. Read these instructions thoroughlybefore assembling the connector kits.

Reasons for reissue of this instruction sheet areprovided in Section 6, REVISION SUMMARY.

Each connector kit consists of a connector housing,

connector assembly, strain relief, inner eyelet, crimpeyelet, and clear tubing. Each kit is also supplied witha bare buffer boot and small tubing to compensate forsmall diameter cable. Also included, assembled ontothe connector, are dust caps for the ferrule (front ofconnector) and plunger (rear of connector).



— Fiber Optic Combination Strip Tool 1278947–1

— Scissors 501014–1

— Cable Holder Assembly 1278023–1

— Cleave Tool 492674–1

— PRO–CRIMPER* Hand Tool Assembly492782–1

— Alcohol Fiber Wipe Packet 501857–2

— isopropyl alcohol

1. Slide the bare buffer boot (small diameter endfirst) over the buffer. See Figure 2, Detail A.

2. Remove both dust caps from the connector

assembly. Keep the ferrule dust cap; discard theplunger dust cap.

3. Push the connector assembly into the holder ofthe cable holder assembly with the ferrule facingoutward. Make sure that the connector buttsagainst the lip on the arm of the cable holderassembly. Slide the fiber into the channel marked“BUFFER”. Make sure that the tip of the bufferbutts against the end of the channel. See Figure 2,Detail B.

4. Mark the buffer at each cross–slot on thechannel. See Figure 2, Detail B. Remove the bufferfrom the cable holder assembly.

5. Using the strip tool, strip the fiber to the firstmark. It is recommended holding the strip tool atan angle to the fiber and stripping the fiber in threesections. See Figure 2, Detail C. Clean the fiber

with an alcohol fiber wipe to remove the fibercoating residue.

1. Push the lever of the cleave tool to open theclamp, and lay the fiber in the groove of the tonguewith the buffer started at the 8–mmscale marking (+0.5 mm). See Figure 3, Detail A.

2. Holding the fiber in place, release the lever sothat the fiber is secure. For best results, it isextremely important that the cleave tool be held asshown in Figure 3, Detail B. Making sure that thetool tongue stays flat, gently depress the tool armto scribe the fiber. The edge of the blade shouldonly touch the fiber. Release the arm.

3. Keeping the fiber in position, slowly bend, butdo not twist, the tongue to cleave the fiber. SeeFigure 3, Detail C. Do not touch, or otherwisecontaminate, the cleaved fiber end. Do not cleanthe cleaved fiber end.

1. Open the cable clamp of the cable holderassembly, and position the buffer (with the cleavedend facing the connector) inside the clamp. Movethe buffer so that the end of the fiber is even withthe front of the arm of the cable holder assembly,and holding the buffer in place, close the clamp.See Figure 4, Detail A.



2. Carefully insert the fiber into the plunger of theconnector assembly until the fiber bottoms againstthe internal fiber. Make sure that the remainingmark on the buffer enters the plunger (if mark doesnot enter the plunger, the fiber must bere–stripped). The resultant bend in the buffershould hold the fiber against the internal fiber. SeeFigure 4, Detail B.

3. Squeeze the handles of the hand tool until theratchet releases. Allow handles to open fully.

Slowly close the tool handles until you hear twoclicks from the ratchet.

4. With the connector assembly in the cable holderassembly, position the ferrule in the upper cavity ofthe front die and the plunger in the upper cavity ofthe rear die. See Figure 4, Detail C.

5. Gently push the buffer toward the connectorassembly to make sure that the fiber is stillbottomed, then slowly squeeze the tool handlestogether until the ratchet releases. Allow thehandles to open fully, and remove connector fromthe dies.

6. Position the plunger of the connector assemblyin the first (smallest) cavity of the front die with theknurl against the edge of the groove in the die andthe ferrule pointed in the direction of the arrow. SeeFigure 5, Detail A.

7. Slowly squeeze the tool handles together untilthe ratchet releases. Allow the handles to open

fully, and remove the connector assembly from thedie.

8. Install the dust cap onto the ferrule, and slidethe bare buffer boot over the plunger until the bootbutts against the connector assembly. See Figure5, Detail B.

9. Remove the connector assembly from the cableholder assembly.

10. Align the key of the connector housing with thechamfered edges of the connector assembly. Slidethe housing over the assembly until it snaps inplace. See Figure 5, Detail C.

The assembly procedure for 900– m bare bufferedfiber is now complete.



1. Slide the bare buffer boot (small diameter endfirst) over the fiber. See Figure 2, Detail A.

2. Remove both dust caps from the connectorassembly. Keep the ferrule dust cap; discard theplunger dust cap.

3. Insert the small (white) tubing into the plunger of

the connector assembly until the tubing bottoms.See Figure 2, Detail A.

4. Push the connector assembly into the holder ofthe cable holder assembly with the ferrule facingoutward. Make sure that the connector buttsagainst the lip on the arm of the cable holderassembly. Slide the fiber into the channel marked“BUFFER”. Make sure that the tip of the fiber buttsagainst the end of the channel. See Figure 2,Detail B.

5. Mark the fiber at each cross–slot on thechannel. See Figure 2, Detail B. Remove the fiber

from the cable holder assembly.6. Using the strip tool, strip the fiber to the firstmark. It is recommended holding the strip tool atan angle to the fiber and stripping the fiber in threesections. See Figure 2, Detail C. Clean the fiberwith an alcohol fiber wipe to remove the fiber bufferresidue.

1. Push the lever of the cleave tool to open theclamp, and lay the fiber in the groove on thetongue with the fiber coating started at the 8–mmscale marking (+0.5 mm). See Figure 3, Detail A.



1. Open the cable clamp of the cable holderassembly, and position the fiber (with the cleavedend facing the connector) inside the clamp. Movethe fiber so that the end of the fiber is even withthe front of the arm of the cable holder assembly,and holding the fiber in place, close the clamp. SeeFigure 4, Detail A.

2. Carefully insert the fiber into the plunger of theconnector assembly until the fiber bottoms againstthe internal fiber. Make sure that the remaining

mark on the fiber enters the plunger (if the markdoes not enter the plunger, the fiber must bere–stripped). The resultant bend in the fiber shouldhold the fiber against the internal fiber. See Figure4, Detail B.

Also, the fiber coating must enter the small tubinginstalled in the back (plunger) of the connectorassembly in Step 3 of Paragraph 5.2.A. Make surethat the start of the fiber coating is not caught onthe entry to the small tubing.



3. Squeeze the handles of the hand tool until theratchet releases. Allow the handles to open fully.Slowly close the tool handles until you hear twoclicks from the ratchet.


5. Gently push the fiber toward the connectorassembly to make sure that the fiber is stillbottomed, then slowly squeeze the tool handlestogether until the ratchet releases. Allow thehandles to open fully, and remove the connectorfrom the dies.

6. Position the plunger of the connector assemblyin the first (smallest) cavity of the front die with theknurl against the edge of the groove in the die andthe ferrule pointed in the direction of the arrow. SeeFigure 5, Detail A.

7. Slowly squeeze the tool handles together untilthe ratchet releases. Allow the handles to openfully, and remove the connector assembly from thedie.

8. Install the dust cap onto the ferrule, and slidethe bare buffer boot over the plunger until the bootbutts against the connector assembly. See Figure5, Detail B.

9. Remove the connector assembly from the cableholder assembly.

10. Align the key of the connector housing with thechamfered edges of the connector assembly. Slidethe housing over the assembly until it snaps inplace. See Figure 5, Detail C.

The assembly procedure for 250– m coated fiber is

now complete.







DO NOT use with singlemode fiber.

1. Slide the strain relief (small diameter end first)over the cable. See Figure 6, Detail A.

2. Remove both dust caps from the connectorassembly. Keep the ferrule dust cap; discard theplunger dust cap.

3. Push the connector assembly into the holder ofthe cable holder assembly with the ferrule facingoutward. Make sure that the connector is sitting flatagainst the arm of the cable holder assembly. Slidethe cable into the channel marked “CABLE”. Makesure that the tip of the jacket butts against the endof the channel. See Figure 6, Detail B.

4. Mark the cable at each cross–slot on thechannel. See Figure 6, Detail B. Remove the cablefrom the cable holder assembly.

5. Using the strip tool, cut through the jacket ateach mark in the slot closest to the tool tip. SeeFigure 6, Detail C.

6. Remove the first jacket segment, and flare thestrength members away from the buffer. Using thescissors, cut the strength members even with the

jacket. Then remove the remaining jacket segment.See Figure 6, Detail D.

7. Slide the crimp eyelet onto the buffer and usingthe eyelet, fold the strength members back overthe jacket. Continue sliding the eyelet over the

jacket until the strength members appear at thefront of the eyelet. See Figure 7, Detail A.

8. Slide the inner eyelet, non–flanged end first,onto the buffer. Push the eyelet under the strengthmembers until the eyelet is flush with the front ofthe crimp eyelet. See Figure 7, Detail B.

9. Slide the buffer into the channel marked“BUFFER” on the cable holder assembly. Makesure that the tip of the buffer butts against the endof the channel. See Figure 7, Detail C.

10. Mark the buffer at each cross–slot on thechannel. See Figure 7, Detail C. Remove the bufferfrom the cable holder assembly.

11. Using the strip tool, strip the buffer to the firstmark. It is recommended holding the strip tool atan angle to the buffer and stripping the buffer in

three sections. See Figure 7, Detail D. Clean thefiber with an alcohol fiber wipe to remove fibercoating residue.

1. Push the lever of the cleave tool to open theclamp, and lay the fiber in the groove on thetongue with the buffer started at the 8–mmscale marking (+0.5 mm). See Figure 8, Detail A.





1. Open the cable clamp of the cable holderassembly, and position the buffer (with the cleavedend facing the connector) inside the clamp. Move

the buffer so that the end of the fiber is even withthe front of the arm of the cable holder assembly,and holding the buffer in place, close the clamp.See Figure 9, Detail A.

2. Carefully insert the buffer into the plunger of theconnector assembly until the buffer bottomsagainst the internal fiber. Make sure that theremaining mark on the buffer enters the plunger (ifthe mark does not enter the plunger, the fiber mustbe re–stripped). The resultant bend in the buffershould hold the buffer against the internal fiber.See Figure 9, Detail B.

3. Squeeze the handles of the hand tool until theratchet releases. Allow the handles to open fully.Gently close the tool handles until you hear twoclicks from the ratchet.

4. With the connector assembly in the cable holder

assembly, position the ferrule in the upper cavity ofthe front die and the plunger in the upper cavity ofthe rear die. See Figure 9, Detail C.

5. Gently push the buffer toward the connectorassembly to make sure that the fiber is stillbottomed, then slowly squeeze the tool handlestogether until the ratchet releases. Allow thehandles to open fully, and remove the connectorfrom the dies.

6. Position the plunger of the connector assembly

in the first (smallest) cavity of the front die with theknurl against the edge of the groove in the die andthe ferrule pointed in the direction of the arrow. SeeFigure 10, Detail A.


8. Slide the crimp eyelet away from the connectorassembly until the strength members are free, thenslide the crimp eyelet toward the connector untilthe strength members and crimp eyelet butt

against the connector. See Figure 10, Detail B.

9. Position the crimp eyelet against the last cavityof the front die with the ferrule pointed in thedirection of the arrow. Make sure that theconnector assembly is butted against the die. Thecrimp eyelet will move into the cavity when the diesare closed. See Figure 11, Detail A. Slowlysqueeze the tool handles together until the ratchetreleases. Allow the handles to open fully.

10. Install the dust cap onto the ferrule, and slidethe strain relief over the plunger until the strainrelief butts against the connector assembly. See

Figure 11, Detail B.

11. Remove the connector assembly from thecable holder assembly.

12. Align the key of the connector housing with thechamfered edges of the connector assembly, andslide the housing over the assembly until it snapsin place. See Figure 11, Detail C.

The assembly procedure for 2.5– to 3.0–mm loose jacketed cable is now complete.









1. The break–out fiber is assumed to be installedwith one fiber per buffer tube and the fiber andbuffer tubes cut to the same length.

2. Mark a circumferential line (approximately 90

around) 4 mm from one end of the clear tubing.See Figure 12, Detail A.

3. Place the inner eyelet, small diameter end first,inside the clear tubing with the flange of the innereyelet against the end of the clear tubing. SeeFigure 12, Detail A.

4. Slide the strain relief (small diameter end first),clear tubing with the inner eyelet inside, and crimpeyelet onto the fiber. See Figure 12, Detail B.

5. Remove both dust caps from the connectorassembly. Keep the ferrule dust cap. Discard theplunger dust cap.

6. Insert the small (white) tubing into the plunger ofthe connector assembly until the tubing bottoms.See Figure 12, Detail C.

7. Push the connector assembly into the holder ofthe cable holder assembly with the ferrule facingoutward. Make sure that the connector buttsagainst the lip on the arm of the cable holder

assembly. Slide the buffer tube into the channelmarked “BUFFER”. Make sure that the tip of thebuffer tube butts against the end of the channel.See Figure 12, Detail D.

8. Mark the buffer tube at the end of the channel(approximately 43 mm from the fiber tip). SeeFigure 12, Detail D. Cut the buffer tube at themark, and remove.

9. Slide the 250– m coated fiber into the channelmarked “BUFFER” on the cable holder assembly.Make sure that the tip of the fiber butts against theend of the channel. Mark the fiber at eachcross–slot on the channel. See Figure 12, Detail D.Remove the fiber from the channel.

10. Using the strip tool, strip the 250– m fibercoating to the first mark. It is recommendedholding the strip tool at an angle to the fiber coatingand stripping the coating in three sections. SeeFigure 12, Detail E. Clean the fiber with an alcoholfiber wipe to remove the fiber coating residue.

1. Push the lever of the cleave tool to open theclamp, and lay the fiber in the groove on thetongue with the buffer starting at the 8–mm scale

marking (+0.5 mm). See Figure 13, Detail A.






2. Holding the 250– m fiber coating, carefully

insert the fiber into the plunger of the connectorassembly until the fiber bottoms against theinternal fiber. Make sure that the second markplaced on the coating enters the plunger. Theresultant bend in the fiber should hold the fiberagainst the internal fiber. See Figure 14, Detail B.





6. Position the plunger of the connector assemblyin the first (smallest) cavity of the front die with theknurl against the edge of the groove in the die andthe ferrule pointed in the direction of the arrow. SeeFigure 14, Detail D.

7. Slowly squeeze the tool handles together untilthe ratchet releases. Allow the handles to openfully, and remove the connector assembly from the

die.8. Slide the crimp eyelet up to, and until it buttsagainst, the rear of the connector assembly.

9. Slide the clear tubing with inner eyelet into thecrimp eyelet until the circumferential line is alignedwith the end of the crimp eyelet. See Figure 15,Detail A.

10. While maintaining the position of the cleartubing relative to the crimp eyelet, position thecrimp eyelet against the last cavity of the front diewith the ferrule pointed in the direction of the arrow.Make sure the connector assembly is against thedie and the line on the clear tubing is aligned withthe opposite end of the crimp eyelet. The crimpeyelet will move into the cavity when the dies areclosed. See Figure 15, Detail B.

11. Slowly squeeze the tool handles together untilthe ratchet releases. Allow the handles to openfully.

12. Install the dust cap onto the ferrule. Open thecable clamp of the cable holder assembly, andremove the fiber from the clamp. Slide the strainrelief over the crimp eyelet until it butts against theconnector assembly. See Figure 15, Detail C.

13. Remove the connector assembly from the

cable holder assembly.

14. Align the key of the connector housing with thechamfered edges of the connector assembly, andslide the housing over the assembly until it snapsin place. See Figure 15, Detail D.

The assembly procedure for 900– m bufferedbreak–out fiber is now complete.



1. Mark a circumferential line (approximately 90

around) 4 mm from one end of the clear tubing.See Figure 12, Detail A.

2. Place the inner eyelet, small diameter end first,inside the clear tubing with the flange of the innereyelet against the end of the clear tubing. SeeFigure 12, Detail A.

3. Slide the strain relief (small diameter end first),clear tubing with the inner eyelet inside, and crimpeyelet onto the fiber. See Figure 12, Detail B.

4. Remove both dust caps from the connectorassembly. Keep the ferrule dust cap. Discard theplunger dust cap.

5. Insert the small (white) tubing into the plunger ofthe connector assembly until the tubing bottoms.See Figure 12, Detail C.

6. Push the connector assembly into the holder ofthe cable holder assembly with the ferrule facingoutward. Make sure that the connector buttsagainst the lip on the arm of the cable holder. Slidethe fiber into the channel marked “BUFFER. Makesure that the tip of the fiber butts against the end of

the channel. See Figure 12, Detail D.7. Mark the fiber at each cross–slot on thechannel. See Figure 12, Detail D. Also, mark thebuffer at the end of the channel. Remove the fiberfrom the channel.

8. Using the strip tool, strip the 250– m fibercoating and buffer to the first mark. It isrecommended holding the strip tool at an angle tothe fiber coating and stripping the coating in threesections. Refer to Figure 12, Detail E. Clean the

fiber with an alcohol fiber wipe to remove the fibercoating residue.

9. Using the strip tool, apply slightly less pressurethan stripping the 125–

m fiber, and strip the buffer

only (leave the 250– m fiber coating in place) tothe second mark. Practice this first.

10. Mark the 250– m fiber coating at the shoulder

of the 900– m buffer. Strip the buffer to the third

mark.

1. Push the lever of the cleave tool to open theclamp, and lay the fiber in the groove on thetongue with the buffer starting at the 8–mm scale

marking (+0.5 mm). See Figure 13, Detail A.2. Holding the fiber in place, release the lever sothat the fiber is secure. For best results, it isextremely important that the cleave tool be held asshown in Figure 13, Detail B. Making sure that thetool tongue stays flat, gently depress the tool armto scribe the fiber. The edge of the blade shouldonly touch the fiber. Release the arm.





2. Holding the 250– m fiber coating, carefully

insert the fiber into the plunger of the connectorassembly until the fiber bottoms against theinternal fiber. Make sure that the second markplaced on the coating enters the plunger. Theresultant bend in the fiber should hold the fiberagainst the internal fiber. See Figure 14, Detail B.





6. Position the plunger of the connector assemblyin the first (smallest) cavity of the front die with theknurl against the edge of the groove in the die andthe ferrule pointed in the direction of the arrow. SeeFigure 14, Detail D.


8. Slide the crimp eyelet up to, and until it buttsagainst, the rear of the connector assembly.

9. Slide the clear tubing with inner eyelet into thecrimp eyelet until the circumferential line is alignedwith the end of the crimp eyelet. See Figure 15,Detail A.

10. While maintaining the position of the cleartubing relative to the crimp eyelet, position thecrimp eyelet against the last cavity of the front diewith the ferrule pointed in the direction of the arrow.Make sure the connector assembly is against thedie and the line on the clear tubing is aligned with

the opposite end of the crimp eyelet. The crimpeyelet will move into the cavity when the dies areclosed. See Figure 15, Detail B.

11. Slowly squeeze the tool handles together untilthe ratchet releases. Allow the handles to openfully.

12. Install the dust cap onto the ferrule. Open thecable clamp of the cable holder assembly, andremove the fiber from the clamp. Slide the strainrelief over the crimp eyelet until it butts against theconnector assembly. See Figure 15, Detail C.

13. Remove the connector assembly from the

cable holder assembly.14. Align the key of the connector housing with thechamfered edges of the connector assembly, andslide the housing over the assembly until it snapsin place. See Figure 15, Detail D.

The assembly procedure for 900– m easy strip orsemi–tight buffered fiber is now complete.







Revisions to this instruction sheet per EC0990–0225–05 include:

Added text to Section 1

Added “loose” to “jacketed cable”

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