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MICO, Incorporated
Brake Lock Application Guide

Brake Lock Application Guide

Product catalog summary

Brake Lock Application Guide Overview: This document provides guidance on using MICO® Hydraulic Brake Locks as supplemental holding devices for vehicles with hydraulic brake systems. These locks are intended to complement, not replace, a vehicle's mechanical parking brake and are suitable for industries such as construction, mining, forestry, agriculture, and recreational vehicles.

Specifications and Product Line: The guide details various brake locks, including the 691 Brake Lock System, Dual Cable Lock, Lever Lock, Twist Lock, and Cable Lock. Each type enhances the holding capability of a vehicle's brakes without interfering with normal functions. The 691 System features an electrohydraulic pump and electronic control module, available in models based on vehicle weight and brake system type.

Brake System Compatibility: Compatibility with different brake systems, such as single, dual, split, and anti-lock systems, is outlined. The document provides identifying features for each system type and specifies appropriate lock positions for front, rear, or all-wheel applications.

Vehicle Application Tables: Detailed tables for vehicle manufacturers (Chevrolet, GMC, Dodge, Ram, Ford) and models specify the appropriate brake lock models based on the vehicle's brake system type and model year, aiding in selecting the correct system for specific applications.

Key Considerations: MICO® Brake Locks are for supplemental use only and should not replace the primary parking brake. The importance of selecting the correct lock based on the vehicle's brake system is emphasized, with contact information provided for further assistance.

Overview: The document provides detailed specifications and configurations for brake systems across various vehicle models and manufacturers, focusing on the period from 1967 to 2019. It includes information on brake system types, service brakes, and miscellaneous notes for light, medium, and heavy-duty vehicles.

Key Sections:

Brake System Specifications: Vehicles are categorized by model year, brake system type (e.g., dual, 3-channel ABS, 4-channel ABS), and service brake configuration (e.g., 4 wheel disc, F-disc/R-drum). The evolution of brake systems over time is highlighted, noting transitions from dual systems to advanced ABS configurations.
Vehicle Categories: Vehicles are grouped into light, medium, and heavy-duty categories, with specific models listed under each category, including applicable brake system type and service brake details.
Miscellaneous Notes: Additional notes provide context, such as the use of vacuum/hydraulic boosters, hydraulic boost master cylinders, and specific recommendations for certain models (e.g., use of MICO Locks, remote reservoir kits).
Accessories and Components: Accessories like remote reservoir kits, elbow fittings, straight adapters, and wire harness extensions are listed to facilitate installation and maintenance of brake systems.

Data Highlights:

ABS Evolution: The transition from dual brake systems to 3-channel and 4-channel ABS systems is documented, with specific figures referenced for visual representation.
Manufacturer-Specific Details: Detailed entries for each manufacturer (e.g., Ford, Freightliner, International - Navistar) specify brake system configurations and any unique features or options available.
Installation Recommendations: Recommendations for installation and maintenance, such as using remote reservoir kits and specific part numbers for components, ensure optimal performance and safety.

Conclusion: This comprehensive document serves as a technical reference for understanding brake system configurations across a wide range of vehicle models and manufacturers, highlighting advancements in brake technology over several decades.

Specifications and Models: Various models of MICO brake locks, including single and dual actuators with different bore sizes, and 3-channel and 4-channel configurations, are outlined. Each model is associated with specific part numbers and components, such as elbows and adapters, detailed with their specifications.

Components and Sub-Components: Details for components like elbows and adapters specify thread types and sizes. A remote reservoir kit is described, listing included parts such as nuts, connectors, tubing, and power units.

Procedures and Recommendations: The document emphasizes using MICO brake locks as supplemental safety equipment alongside existing vehicle parking brakes. It highlights the necessity of using a Low Pressure Warning Switch with alarms to signal pressure loss and advises against disconnecting these alarms. Cleanliness when handling brake lines and fittings is crucial to prevent contamination. Vehicle manufacturer or SAE standards should be followed for connections, using only steel brake tubing and proper system fluids conforming to SAE or DOT standards. Sealants or compounds should not be used on connections to avoid contamination. Proper torque values for fittings and connections are crucial, and routine inspections for leaks or damage are recommended.

Installation and Maintenance: After installation, the brake system should be bled according to manufacturer recommendations. Inspection and test procedures as outlined in the operating instructions should be followed. Warning labels and operating instructions should be placed in the vehicle cab for operator awareness.

Disclaimer: MICO, Inc. provides general information about its products and is not responsible for errors in printed materials. Specifications are subject to change, and the most recent versions should be consulted on their website. All products and services are subject to the MICO Warranty.

Catalog excerpts

BRAKE LOCK APPLICATION GUIDE 2019 In addition to a well maintained and adjusted mechanical parking brake, experience has shown that in many uses, additional supplemental holding is necessary. This can be done in the form of wheel chocks, outriggers, or other means to keep all wheels that are in contact with the ground from moving. MICO® Hydraulic Brake Locks are ideal for use on vehicles with hydraulic brake systems. Typical uses are in the construction, mining, forestry, agriculture, material handling industries, multi-stop delivery vehicles, and recreational vehicles, such as motor homes and off-road 4-wheel drives. All MICO® Brake Locks are for supplemental brake holding and are to only be used in conjunction with a vehicle’s properly functioning mechanical parking brake. The brake locks use the vehicle’s service brakes as an operational supplement to the parking brakes and are not intended to be used as the primary parking brake or to be used for prolonged parking. Several types of brake locks are available for use in single, dual, split, or anti-lock brake systems. The type of brake system on the vehicle will determine which brake locks can be used. If you have questions about selecting the proper brake lock, please contact MICO. MICO, Inc. Form No. 80-950-152 Revised 2019-05-20 1

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BRAKE LOCK PRODUCT LINE 691 Brake Lock System USER INTERFACE 691 Brake Lock Systems lock hydraulic pressure in the service brakes to supplement the vehicle’s original equipment parking brake and provide extra holding in heavy-duty and high frequency applications. These systems also function as an interlock to apply pressure to the service brakes when other vehicle mounted equipment is being used. The 691 System consists of a small electrohydraulic pump, remote mounted actuator (single and/or dual), electronic control module, and a small dash mounted user interface. The operator simply activates...

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Dual Cable Lock Dual Cable Locks are cable operated and are designed to supplement a vehicle's original equipment parking brake by utilizing the hydraulic service brakes of a vehicle equipped with a dual or split braking system. Dual Cable Locks can provide 4-wheel lockup for hydraulic dual brake systems or rear wheel ABS, as well as 2-wheel lockup for hydraulic 3 and 4 channel ABS. Each Dual Cable Lock includes two low pressure warning switches. MODELS: 02-640-169 Includes - 3/16 and 1/4 inch fittings, 10 ft. cable - (BF) 02-640-202 Includes - 3/16 and 1/4 inch fittings, 10 ft. cable - (HO)...

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DIFFERENT BRAKE SYSTEMS Typical hydraulic braking systems in use today vary depending on manufacturer and size of vehicle. For instance, a vehicle equipped with a single system may have a firewall mounted booster or possibly a frame mounted remote booster. The same holds true for the dual and split systems. The rear wheel anti-lock system is a dual brake system with an anti-lock valve installed. All-wheel anti-lock systems are defined as 3-channel or 4-channel systems (check the number of outlet lines from the anti-lock control valve). To be absolutely sure with which braking system your vehicle...

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TYPICAL REAR WHEEL ANTI-LOCK SYSTEM Two independent braking systems. One system leads to the front brakes and the other system to the rear brakes. Identifying Feature: 1. Two lines from master cylinder. 2. Anti-lock control valve between master cylinder and rear wheels Lock Position: (1) Front Axle (2) Rear Axle (3) 4-Wheel IMPORTED TRUCK 3-CHANNEL ALL-WHEEL ANTI-LOCK SYSTEM Provides braking control by way of independent anti-lock channels for each rear wheel and a third channel for the front wheels. Identifying Feature: 1. Three separate air/hydraulic brake boosters. 2. One line to front brakes....

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+ With 4-channel ABS deleted, brake system type is Dual (Figure 2) NOTE: Vacuum/Hydraulic Boost = Vacuum assisted booster for hydraulic cylinder Hydraulic Boost Master Cylinder = Master cylinder driven by hydraulic booster powered by steering pump Best Choice ♦ Front wheel lockup only ■ Rear wheel lock up only 3-channel ABS

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NOTE: Vacuum/Hydraulic Boost = Vacuum assisted booster for hydraulic cylinder Hydraulic Boost Master Cylinder = Master cylinder driven by hydraulic booster powered by steering pump iBest Choice ▲ On 3-channel ABS systems use 02-691-305 ■ Rear wheel lock up only 3-channel ABS

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NOTE: Vacuum/Hydraulic Boost = Vacuum assisted booster for hydraulic cylinder Hydraulic Boost Master Cylinder = Master cylinder driven by hydraulic booster powered by steering pump iBest Choice ♦ Front wheel lock up only ▲ On 3-channel ABS systems use 02-691-305 NA Not Applicable ■ Rear wheel lock up only 3-channel ABS, front wheel only lockup use 02-691-223

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+ With 4-channel ABS deleted, brake system type is Dual (Figure 2) NOTE: Vacuum/Hydraulic Boost = Vacuum assisted booster for hydraulic cylinder Hydraulic Boost Master Cylinder = Master cylinder driven by hydraulic booster powered by steering pump iBest Choice ♦ Front wheel lock up only ▲ On 3-channel ABS systems use 02-691-305 NA Not Applicable ■ Rear wheel lock up only 3-channel ABS, front wheel only lockup use 02-691-223

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Medium Duty (T170-T370) Vehicle Application Aerial Lift Bucket Other Applications Model Year Brake System Type Service Brakes Miscellaneous Notes 4 Wheel 2 Wheel 4 Wheel 2 Wheel Medium Duty (Model 325-337) Model Year Brake System Type Service Brakes Miscellaneous Notes 4 Wheel 2 Wheel 4 Wheel 2 Wheel Medium Duty (Bullet CONV45-CONV55) Model Year Brake System Type Service Brakes Miscellaneous Notes 4 Wheel 2 Wheel 4 Wheel 2 Wheel Medium Duty (Actera 5500-7500) Model Year Brake System Type Service Brakes Miscellaneous Notes 4 Wheel 2 Wheel 4 Wheel 2 Wheel Tundra Model Year Brake System Type Service...

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OFFSHORE MANUFACTURED Light Duty (Van & Cab-chassis) Vehicle Application Model Year Brake System Type Service Brakes Miscellaneous Notes 4 Wheel 2 Wheel 4 Wheel 2 Wheel Light Duty (W3500-W4500) also W5500 through 1998 model year Model Year Brake System Type Service Brakes Miscellaneous Notes Disc/Drum-Drum Vacuum/Hydraulic Booster F-disc/R-drum Vacuum/Hydraulic Booster Model Year Brake System Type Service Brakes Miscellaneous Notes Air/Hydraulic Boost with ABS on the air side. 4-channel ABS Vac/Hyd Vacuum/Hydraulic Booster, 2005-2007 HD is Hyd/Hyd. Model Year Brake System Type Service Brakes...

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