TM 9-2330-203-14&P
4-19. SERVICE BRAKE ASSEMBLY REPLACEMENT (M197 AND M198) (Con't).
3.
Inspect brakeshoe surface for cracks, distortion, and excessive wear. Brakeshoe linings must have a minimum
thickness of X in. (3.2 mm). Replace brakeshoe assembly if cracked or if lining thickness is less than Y in. (3.2
mm).
Inspect brakeshoe lining rivets for looseness. Rivets should be at least 16 in. (1.6 mm) below surface of
4.
brakeshoe lining. If rivets are less than Y6 in. (1.6 mm) below surface of brakeshoe lining, replace brakeshoe
assembly.
5.
Check needle roller bearings (37 and 39) in bracket (7). If bearings are damaged, drive out of bracket and replace.
c.
INSTALLATION
1.
Install backing plate (20) on axle (6) with ten bolts (31).
2.
If removed, install mounting plate bracket (33) on backing plate (20) using four new rivets (32).
3.
Install each pivot pin (5) on backing plate (20) using new lockwasher (34) and nut (35).
4.
If removed, install lubrication fitting (38) in bracket (7).
5.
If removed, install bracket (7) on backing plate (20) using four new rivets (36).
6.
Install bracket (19) on bracket (7) using three capscrews (29) and new lockwashers (28).
7.
Lubricate camshaft (21) and needle roller bearings with grease. Install camshaft, two flatwashers (22 and 31), and
new seal (30) through backing plate (20) and brackets (7 and 19).
8.
Install new seal (27), two flatwashers (25 and 26), two spacers (23 and 24), and slack adjuster (8) on end of
camshaft (21).
TA510688
4-35