Service Brake Shoes and Wheel Cylinders

releasing adjusting nut (21), screw (20) and sleeve

Inspection.

(1) Remove wheels with assembled tires (para

(22).

(f) Pry off brake return spring retainer (3)

from shield (7) and remove brake return spring (4).

(2) Back off brake shoe adjusting bolts and

remove brake drums.

(g) Remove brake shoe retainer (8) and

(3) Inspect thickness of lining on brake shoes.

other guide (9) from anchor (12).

Replace shoes if lining is less than 1/16 inch thick

(h) Remove brake shoes (5) from support

at thinnest point.

plate (10). Operating lever strut (6) will fall out as

brake shoes are removed.

( 4 ) Inspect wheel cylinders for leakage or

cracked or deteriorated boots. Replace cylinder if

(i) Separate operating lever (18) from

brake shoe by removing nut (19), washer and screw

defective.

c. Removal.

(17).

(1) Remove wheels with assembled tires and

(j) Spacer (11), sleeve (16), shield (7) and

tubes paragraph 4-62 a .

anchor (12) need not be removed from support

(2) Back off brake shoe adjusting bolts and

(10).

remove brake drum.

(3) Shoe installation.

(3) Clamp wheel cylinder pistons to prevent

(a) Reverse procedure in (2) above.

loss of fluid, or air entering brake lines.

(b) Turn adjusting nut (21) until brake

(4) Remove retainer (36, fig. 4-39), and brake

shoes are in released position before installing

return spring (35).

brake drum (2).

(5) Hold retainer (5) from turning, depress

(c) Be certain brake shoes are centered on

spring (6) and grap antirattle rod (7) with a pliers.

support and are free to move.

Turn 1/4 turn to release antirattle rod from backing

(d) A d j u s t b r a k e s h o e s ( s u b p a r a b ( 1 )

plate (8) and remove inner and outer retainers (5),

above).

spring (6) and antirattle rod (7).

(e) Adjust parking brake lever (subpara a

(6) Remove brake shoes (34).

(1) above).

4-56. Service Brake Shoes and Wheel Cylinders

Note. Remove wheel cylinder as described below only

if inspection shows that replacement is necessary.

a. Adjustment.

(1) Raise rear end of tractor until rear tires

clear floor.

(2) Turn adjusting bolt with a 15/16 inch

open end wrench (fig. 4-38) until a slight drag can

be felt as the wheel is turned by hand.

(3) Back off adjusting bolt until wheel can

rotate freely.

(4) Repeat adjustment for all four brake shoes

and test brakes.

Figure 4-38. Brake adjustment.

4-46