Chain Replacement

(13) Install dead end plate (23) and new gasket (25)

(2) Remove three screws (1) and lockwashers (2).

on body (8) using eight screws (24).

Remove chain mounting block (3) from slabback (4). Dis-

card lockwashers.

(14) Tap bearing (29) into place in dead end plate

(23).

(15) Install dead end cap (21) and new gasket (22) on

dead end plate (23) using four screws (20).

(16) Install key (5) in feed motor shaft.

(17) Carefully position feed motor (3) for installa-

tion. Ensure that key (5) on feed motor shaft properly en-

gages keyway in gearbox shaft.

(18) Secure feed motor (3) to quill motor flange (4)

using four screws (1) and new lockwashers (2).

(19) Install feed motor and gearbox assembly (see

paragraph 7-16).

7-23. Chain Replacement

(3) Move slabback (4) or chain mounting block (3)

out of the way so that master links on chain are accessible.

(4) Remove two cotter pins (5) from each master

link (6). Separate master links and remove from chain

mounting block (3). Discard cotter pins.

(5) Remove chain (7) from feedshell (8).

b. Installation.

Caution: Do not grease chain.

(1) Wrap chain (7) around sprockets. Ensure that

chain properly engages all sprockets.

(2) Connect two master links (6) to chain (7) and

a. Removal.

chain mounting block (3). Secure using four new cotter

pins (5).

Warning: If feedshell is in operating position, fully

lower drifter before removing chain. Failure to follow this

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

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

warning could cause injury to personnel and damage to

equipment.

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

(1) Fully loosen chain (see paragraph 7-13).

Page C-1. Appendix C is superseded as follows:

APPENDIX C

MAINTENANCE ALLOCATION CHART (MAC)

Section I. INTRODUCTION

C-1. The Army Maintenance System MAC

b. The Maintenance Allocation Chart (MAC) in Sec-

tion II designates overall authority and responsibility for

a. This introduction (Section I) provides a general ex-

the performance of maintenance functions on the identi-

planation of all maintenance and repair functions autho-

rized at various maintenance levels under the standard

fied end item or component. The application of the main-

Army Maintenance System concept.

tenance functions to the end item or component will be