Transmission tailshaft park brake upgrade for the Toyota Landcruiser from GearingDynamics.com

Gearing Dynamics - Designers and Manufacturers of Specialised 4x4 Driveline Technology for Toyota Landcruisers. Also Greasable CV Joints, CV Boots, Exhaust Brakes, Air Suspension, Radiators

HEAVY DUTY BRAKE UPGRADE

Transmission tailshaft park brake upgrade for the Toyota Landcruiser from GearingDynamics.com

HEAVY DUTY BRAKE UPGRADE

FOR TOYOTA LANDCRUISER

79/ 70 SERIES

NOW AVAILABLE

Heavy Duty Caliper design
Bigger Rotors and Pads

The Upgrade Solution

Transmission tailshaft park brake upgrade for the Toyota Landcruiser from GearingDynamics.com

REAR BRAKE PROBLEMS

The Toyota Landcruiser 79/70 series vehicles are Australia's most popular 4WD and in particular are favoured in underground mining where the conditions are notoriously harsh, extreme and corrosive.

In this work environment the Toyota rear disc brake/ drum park brake arrangement proves inadequate with the rear pads and handbrake generally showing accelerated, premature wear.

Combining a disc brake and drum park brake within a 16in wheel compromises the size of both within the limited space. An overly complicated design results that is costly to maintain and proves inadequate for safe braking.

The rear brake with its inner park brake arrangement becomes inundated with mud and slurry which then can't escape. These abrasives quickly render the park brake inoperative and unsafe.

The Upgrade Solution

Leaving the front brakes alone as they reportedly work satisfactorily, the aim was for a large, simple, robust caliper with bigger pads and a heavy duty rotor.

To achieve the extra space needed for a bigger caliper, the park brake is moved up on to the transfer case.

The prop shaft is re-used without need for shortening.

TRANSMISSION MOUNTED PARK BRAKE

Available separately if required

The Park Brake caliper and disc rotor assembly is easily attached to the transfer case by way of an adapter plate and bolts. No tail shaft shortening is required.

The caliper selected is designed for harsh corrosive conditions with an additional steel cover plate protecting it from mud and water.

A heavy steel lever connects the Park brake to the re-routed original cable for fail safe operation.

Transmission tailshaft park brake upgrade for the Toyota Landcruiser from GearingDynamics.com

Standard disc brake/drum park brake.

Heavy Duty Caliper design

It is common automotive practice for rear brakes to be proportionally smaller than the fronts in order to achieve braking balance.

The heavy duty upgrade brakes use a big front brake type caliper to give the larger pads. To achieve the necessary proportional balance the calipers are sleeved down using stainless steel.

Rotors and Pads

Without a park brake to be included, the rear rotor was able to be enlarged in both diameter and thickness. By bolting the new rotor to the hub similar to the front, the rotor becomes 300mm dia and 28mm thick (18mm standard) with pad contact area almost doubled.

“Mine Pack” special pad material for both the upgraded reardisc brakes and the park brake is formulated for optimum stopping performance and long life.

Summary

The vehicle remains with the original master cylinder, wheels, hubs, transfer case and standard prop shaft. Fitting is simple and parts are readily available and economically priced.

An engineers report is provided for ADR certification and road registration.

Product enquiry

Proven Performance and Reliability for
Toyota Landcruisers - for over 20 years!

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Contact our sales department today!

26 Hume Reserve Court,
North Geelong,
Victoria, 3215
Australia
Phone: 03 5272 2844
Fax: 03 5272 2633
service@gearingdynamics.com
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