REPLACE SERRATED LOCKRING SCREW THREAD INSERTS

STANDARD AND OVERSIZE INSERT TECHNICAL DATA

TM-9-2350-261-34 Carrier Personnel Full Tracked Armored M113A2 2350-01-068-4077 Carrier Command Post Light Tracked M577A2 2350-01-068-4089 Manual
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TM 9-2350-261-34 REPLACE SERRATED LOCKRING SCREW THREAD INSERTS DESCRIPTION This task covers: Remove (page 8-29). Install Non-sealed Inserts (page 8-31). Install Sealed Inserts (M981 and M1064 Carrier, External Fuel Tanks Only) (page 8-31). INITIAL SETUP Tools: Personnel Required: General Mechanics Tool Kit (Item 35, App B) Track Vehicle Repairer 63H10 Extractor Screw Set (Item 32, App B) Portable Elecric Drill (Item 24, App B) References: Twist Drill Set (Item 98, App B) See your -10 Materials/Parts: Equipment Conditions: Grease (Item 9, App C) Engine stopped/shutdown (see your –10) Sealing compound (Item 69, App C) Carrier blocked (see your -10) Sealing compound primer (Item 74, App C) REMOVE 2. N O T E Screw thread inserts used in the M981 carrier external fuel tanks (insert with packing, installed with thread sealant) are removed using the same method described here for non-sealed inserts, except extracting the insert may be more difficult due to sealant on the threads. 1. Drill out inside serrations of lockring. Use drill the same diameter as inside serrations. 3. 4. Drill to depth of counterbore. Drive in extractor tool to screw out insert. As insert comes out, it will push out lockring. If lockring does not come out with insert, hit ring with a punch and hammer to collapse ring. Remove ring. GO TO NEXT PAGE Change 2 8-29

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