REPLACE LOCKED-IN STUDS (M577A2 AND M1068 ONLY)
General Mechanics Tool Kit (Item 35, App B)
Track Vehicle Repairer
Extractor Screw Set (Item 32, App B)
Hacksaw (Item 39. ADD B)
Portable Electric Drill (Item 23, App B)
Screw Threading Set (Item 94, App B)
Twist Drill Set (Item 98, App B)
Engine stopped (see your -10)
Carrier blocked (see your -10)
R E M O VE
1. Use a hacksaw to cut off broken stud as
close to mounting surface as you can.
2. If a locked stud with serrated lockring is
being removed, punch center of remaining
stud. Drill a pilot hole.
Key-locked studs have predrilled pilot
3. Use an extractor to remove stud.
Use correct size tap drill
(see table on next page) to drill hole for stud.
Tap threads. See table on next page for
correct thread size.
Install stud in threaded hole.
7. 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 on next page.
See table on next page for correct nut
If stud with serrated lockring is to be
installed, place lockring on stud.
Cut off a piece of heavy wailed pipe or tub-
ing to fit over stud as shown in view B on
next page. See Fabricated Tools, page 2-5.
Use a hammer to drive keys or lockring
down to secure stud as shown in view B on
Drive keys flush with mount surface.
Do not drive upper edge of lockring below
upper edge of serrated part of stud. Drive