TM 9-2350-247-34 REPLACE LOCKED-IN STUDS 0038 00 THIS WORK PACKAGE COVERS: Removal (page 0038 00-1). Installation (page 0038 00-1). INITIAL SETUP: Maintenance Level Direct Support Tools and Special Tools General Mechanic’s Tool Kit (WP 0078 00, Item 68) Portable Electric Drill (WP 0078 00, Item 12) Twist Drill Set (WP 0078 00, Item 15) Screw Extractor Set (WP 0078 00, Item 18) Hacksaw Frame (WP 0078 00, Item 21) Screw Threading Set (WP 0078 00, Item 63) Hacksaw Blade (WP 0080 00, Item 19) Lock Ring Drive Tool (WP 0079 00, Figure 0079 00-2) Personnel Required Track Vehicle Repairer 63H References See your -10 Equipment Condition Engine stopped (see your -10) Carrier blocked (see your -10) REMOVAL 1. Use a hacksaw to cut off broken stud as close to mounting surface as you can. 2. If a locked stud with serrated lock ring is being removed, punch center of remaining stud. Drill a pilot hole. NOTE Key-locked studs have predrilled pilot holes. 3. Use an extractor to remove stud. INSTALLATION 1. Use correct size tap drill (see table below) to drill hole for stud. 2. Tap threads. See table below for correct thread size. 3. Install stud in threaded hole. Table 1. LOCKED-IN STUDS TECHNICAL DATA Nut End Thread Size Part Number/NSN Stud End Thread Size Nut End Length Application * 11597873 (19207) 5307-00-112-0473 3/4-10 UNC-3A (7/8 dia counterbore) 2-1/4 inch 1/2-20 UNF-3A ** 10947253 (19207) NSN not assigned 7/8-14 UNS-2A 2-1/4 inch Winch transfer gearcase mount * Screw thread stud with serrated lock ring. ** Key-locked screw thread stud. 4. If stud cannot be turned by hand, lock two jamnuts on nut end of stud. Then turn with a wrench as shown in view A below. 0038 00-1