Section Il. STEERING CLUTCHES, BRAKES AND BEVEL GEAR

b r a k e lever assembly (14) to rotate about the brake

6-13. General

l e v e r shafts (11 and 12). The struts (15) and (17)

This section contains information on the brakes,

a r e forced against the lugs on the brake band (18),

s t e e r i n g clutches, steering clutch hydraulic controls,

c a u s i n g the band to contract on the steering clutch

and bevel gear.

o u t e r drum. When the brake pedal is released, the

6-14. Brakes

spring ( 2 ) r e t u r n s t h e b r a k e p e d a l , l i n k a g e a n d

a . General. T w o c o n t r a c t i n g - b a n d - t y p e b r a k e s ,

b r a k e hand to the unapplied position. The parking

which operate independently of one another, are

brake is engaged by depressing either or both brake

used to supplement the action of the steering clutch

pedals and pushing the parking brake lever (1)

or to stop the tractor. E i t h e r or both brakes can be

d o w n . This moves the parking brake linkage (6)

held in the locked position by the brake lock pawls

forward, engaging the pawl (7) with the ratchet

( 7 , fig. 6-72). These pawls are actuated by a single

(13). The brakes are held in the applied position by

hand lever. The operation of both brakes is the

the pawls that hold the brake linkage in the

same. When the brake pedal (8) is depressed, the

engaged position.

b r a k e control linkage moves the brake control lever

CAUTION

(5) forward. The brake shaft (4) and brake lever

The brake pedals should be depressed

( 3 ) rotate and pull up on the brake link (9). This

b e f o r e the lever (1) is pulled upward to

f l a t t e n s the brake toggle links (16) and causes the

release the brakes. This will prevent

brake strut support lever assembly (10) and the

d a m a g e to the ratchet teeth or the pawl.

6-68