Drifter Drill Replacement (Cont)

7-9.

Centralizer Replacement and Repair

a. Removal.

(1) Release latch bolt (1) from two centralizer

blocks (2).

(2) Remove bolt (3), lockwasher (4), and pin (5) se-

curing each centralizer block (2) to mount (6). Remove

two blocks from mount. Discard lockwashers.

b. Installation.

b. Disassembly.

(1) Remove locknut (7) flatwasher (8), spring (9)

(1) Connect two master links (11) on feed chain

and beveled washer (10) from latch bolt (1). Discard lock-

(12) to chain mounting block (3). Secure using four new

nut.

cotter pins (10).

(2) Remove lubrication fitting (11) from each cen-

(2) Install slabback (4), four shims (7) and two side

tralizer block (2).

rails (8) on feedshell (9) using four bolts (6) and new lock-

c. Assembly.

nuts (5).

(1) Install lubrication fitting (11) in each centraliz-

(3) Measure clearance between side rails (8) and

er block (2).

flange on feedshell (9). If clearance is greater than l/8 in.,

(2) Install beveled washer (10), spring (9) and flat-

remove thinner shim and remeasure. Adjust shims until

washer (8) on latch bolt (1). Secure with new locknut (7).

clearance is l/8 in. or less.

Do not fully tighten locknut.

(4) Install chain mounting block (3) on slabback (4)

d. Installation.

using three bolts (1) and new lockwashers (2).

(1) Install each block (2) on mount (6) using pin (5)

(5) Install drifter drill (see paragraph 7-7).

new lockwasher (4) and bolt (3).

(6) Adjust chain (see paragraph 7-13).

(2) Lubricate centralizer (LO 5-3820-241-12).