BRAKES
7
Brake system description
The I-series tractors have two braking systems
available based on which transmission is used.
HydroGear transmissions use a disc type brakes. The
IVT transmission uses an external drum brake system.
For HydroGear transmissions:
• The brakes are located on each transmission.
• They are activated by pressing on the brake
pedal.
• The brake pedal is attached to a brake cross
shaft assembly. This will pull on the two brake
rods.
• The brake rods are attached to the cam arms, in
the brake calipers, by over travel springs.
• When the cam arms are pulled forward they
push on the brake pins by a cam action applying
pressure to the brake pads.
• The brake cross shaft assembly also has a link
that is connected to the drive belt idler pulley
bracket. When the brakes are applied, the idler
pulley is pulled away from the drive belt. This de-
tensions the belt, disengaging drive to the trans-
missions. See Figure 3.1.
Figure 3.1
Idler pulley
Belt
de-tensioned
Brake rods
Drive pedal shaft
For the IVT transmission:
The IVT transmission has two drop axles. On each
drop axle there is an external drum brake.
See Figure 3.2.
• The brakes are applied whenever the drive
pedal is released.
• Depressing the brake pedal will disengage the
drive belt and apply extra force to the rear
shoes.
• The idler pulley bracket has a gas charged
dampener attached to it. This dampener will
smooth out the engagement of the drive belt
when the brake pedal is released.
Figure 3.2
Brake
CHAPTER 3: BRAKES
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