TRIM GP-CAB 3899088 - Caterpillar

Illustration 1 g02193033Right Service Brake Pedal
The right service brake pedal is used for conventional braking.Left Brake Pedal
The left service brake pedal provides three braking functions:
Automatic Downshifting of the Transmission
Neutralization of the Transmission
BrakingThe left service brake pedal is used for automatic downshifting and neutralization of the transmission for all transmission shift modes. The automatic downshifting and the neutralizing of the transmission saves wear on the service brakes, axles, and components of the power train.Use the left brake pedal for most conditions when adequate traction is available.Left Brake Pedal Operation
The functions of the left brake pedal depend on the position of the left brake pedal and on the position of the transmission shift mode.
Illustration 2 g01443500
(A) Brake Application
(B) Logic for Downshift
(C) Transmission Neutralizer
(D) Level Operation Mode
(E) Moderate Operation Mode
(F) Aggressive Operation Mode Initial travel of the left brake pedal will cause the transmission to downshift. The transmission will downshift until second gear is reached. Each downshift of the transmission will reduce the speed of the machine. The transmission will downshift at higher speeds than the normal automatic downshift speeds. The transmission will only downshift if an engine overspeed will not occur. The transmission will not upshift until the left brake pedal is released.The transmission will be neutralized when the pedal is depressed into Transmission Neutralizer (C) on Illustration 2 unless the transmission neutralizer is disabled. The start of neutralization will depend on the setting of the transmission Neutralizer Button. The transmission will be engaged again after the left brake pedal is released 4 degrees from the maximum pedal position. The transmission will engage only if the transmission was neutralized. The service brakes will still be applied when the transmission engages. This action will help prevent unwanted movement while the machine is on a slope.Note: Wait at least one second after the left brake pedal is released for 4 degrees before the pedal is released. This action will allow the transmission to engage fully.Depressing the left pedal will neutralize the transmission again.When the left brake pedal is fully released, the transmission will return to normal operation. The transmission will remain in the current speed if the transmission mode is set in MANUAL.Note: Refer to the Operation and Maintenance Manual, "Monitoring System" for more information. Consult your Cat dealer for more information about the operation of the left brake pedal.