TM 10-3930-671-24 3-19. EXHAUST SYSTEM REPLACEMENT a. Removal. (1) Disconnect batteries (Para 3-25). (2) Remove counterweight (Appendix F, Counterweight Maintenance, Section 12.1). (3) To remove muffler (1), proceed as follows: NOTE It may be necessary to tap on muffler to remove exhaust pipe. (a) Remove two nuts (2), lockwashers (3), u-bolt clamp (4), and  exhaust  pipe  (5)  from  muffler  (1)  and  bracket (6).  Discard lockwashers. (b) Remove  two  nuts  (7),  lockwashers  (8),  u-bolt  clamp  (9),  and  muffler  (1)  from  exhaust  pipe  (10).    Discard lockwashers. (4) To remove exhaust pipe (10), proceed as follows: (a) Remove two nuts (11), flange (12), exhaust pipe (10), and exhaust gasket (13) from manifold (14). (b) f necessary, remove two screws (15) from manifold (14). (c) Remove two clamps (16) and heat insulator (17) from exhaust pipe (10). (5) Remove two nuts (18) and bracket (6) from radiator cover (19). 3-42