TM 5-3825-225-14&P
Section VII. BRAKE SYSTEM MAINTENANCE
4-22. BRAKESHOES AND SLACK ADJUSTER REPLACEMENT.
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WARNING
DO NOT handle brakeshoes, brakedrums, or other brake components unless area has been
properly cleaned. There may be asbestos dust on these components which can be dangerous If
you touch it or breathe it. Wear an approved filter mask and gloves. Never use compressed air
or a dry brush to clean brake components. Dust may be removed using an industrial-type
vacuum cleaner. Clean dust or mud away from brake components with water and a wet, soft
brush or cloth. Failure to follow this warning may result In serious Illness or death to personnel.
a. Removal (See Appendix F, Figures 20 and 21).
(1) Remove wheel assemblies (see paragraph 4-26).
(2) Remove brakedrum, hub and wheel bearings (see paragraph 4-25).
(3) Disconnect slack adjuster (5, Appendix F, Figure 21) from brake chamber (see paragraph 4-23).
(4) Remove retaining ring (6), slack adjuster (5), spacer (4), and preformed packing (3). Discard retaining
ring and preformed packing.
(5) Remove shoe return spring (1, Appendix F, Figure 20).
(6) Remove retaining rings (6) and washers (7). Discard retaining rings.
(7) Knock out anchor pin (9) and bushing (8), and remove brakeshoes (2).
(8) Remove roller retaining spring (12), spring pin (10), and rollers (11).
(9) Remove screws (5), lockwashers (4), and dust shield (3). Discard lockwashers.
(10) Remove screws (7, Appendix F, Figure 21), lockwashers (8), washers (9), camshaft bushing and
retainer assembly (2), and preformed packing (3). Discard lockwashers and preformed packing.
(11) Remove retaining ring (6), washer (10), and camshaft (14).
(12) Remove washer (10), preformed packing (13), bushing (12), and seal (11). Discard preformed packing
and seal.
b. Inspection.
(1) Check anchor pin for wear and signs of misalinement.
(2) Check brakeshoes for wear at anchor pin holes.
(3) Check camshaft and camshaft bushing for wear.
(4) Replace shoe return springs when replacing shoes.
(5) Check brake linings for grease saturation, wear, and loose rivets or bolts.
(6) Replace any worn or damaged parts.
c. Installation (See Appendix F Figures 20 and 21).
(1) Install new seal (11), bushing (12), new preformed packing (13), and washer (10, Appendix F, Figure 21).
(2) Install camshaft (14), washer (10), and retaining ring (6).
(3) Attach camshaft bushing and retainer assembly (2) and new preformed packing (3) to camshaft (14) and
axle with washers (9), new lockwashers (8), and screws (7).
(4) Attach dust shield (3, Appendix F, Figure 20), to spider with new lockwashers (4) and screws (5).
(5) Attach rollers (11) to brakeshoes (2) with spring pin (10) and roller retaining spring (12).
(6) Attach brakeshoes (2) to spider with bushing (8) and anchor pin (9).
(7) Secure anchor pin (9) with washers (7) and new retaining rings (6).
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