BRAKES
12
Brake shoes/drum - IVT transmissions
On IVT transmissions, the brake shoes and drums
are the wearing parts that will need to be serviced from
time to time. If a tractor is operated with the parking
brake dragging, the shoes will wear out rapidly and the
brake drum will develop hot spots. If the tractor is oper-
ated long enough, the drum may have grinding marks
on it with excessively worn shoes.
IMPORTANT: The brake shoes and the drums
must be replaced at the same time.
To service the brakes:
1. Jack up the tractor and remove the rear wheels
as described in the previous section.
2. Make sure the brakes are released.
3. Disconnect the brake rod spring.
See Figure 3.13.
4. Disconnect the brake shoe spring.
See Figure 3.14.
NOTE: There is a lot of tension in the brake
shoe springs. A piece of starter rope can be
used to remove the spring.
5. Remove the pivot bolt at the bottom of the brake
shoes.
NOTE: There is a spacer behind the shoes that
will fall out as the pivot bolt is removed.
See Figure 3.15.
! CAUTION! CAUTION
If the drum shows hot spots or any
other signs of damage, including
warpage, it must be replaced. Fail-
ure to do so can result in the failure of the brakes
Figure 3.13
Brake rod
Figure 3.14
Brake shoe
spring
! CAUTION! CAUTION
Do not remove the screws to dis-
connect the brake shoe springs.
The springs are under high tension
and can cause the screw to become a projectile as it is
being removed.
Figure 3.15
Spacer
Pivot bolt
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