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NHTSA ID Number: 10081155
Manufacturer Communication Number: TP09101
Summary
THIS TECHNICAL BULLETIN IS A KIT INSTALLATION DOCUMENT THAT HAS BEEN UPDATED TO MEET THE CURRENT PRODUCT OFFERING.
1 Affected Product
Equipment
MERITOR
WABCO
Service Parts Instructions
Meritor WABCO HPB Kit with ECU (10 Coil)
Kits 400 850 877 0, 400 851 877 0 and 400 851 886 0 for Servicing Units 478 407 125 0, 478 408 125 0 and 478 408 135 0
Hazard Alert Messages
Read and observe all Warning and Caution hazard alert messages in this publication. They provide information that can help prevent serious personal injury, damage to components, or both.
WARNING
To prevent serious eye injury, always wear safe eye protection when you perform vehicle maintenance or service.
Park the vehicle on a level surface. Block the wheels to prevent the vehicle from moving. Support the vehicle with safety stands. Do not work under a vehicle supported only by jacks. Jacks can slip and fall over. Serious personal injury and damage to components can result.
Release all air from the air systems before you remove any components. Pressurized air can cause serious personal injury.
CAUTION
The HCU hydraulic power brake system is a complex device that provides optimum efficiency and operation. If the system sustains damage, or a component malfunctions and requires replacement, the replacement procedures provided by Meritor WABCO must be followed exactly with the associated steps performed in the order presented.
Hydraulic brake fluid is a caustic substance. Contact with the hydraulic brake fluid can cause skin irritation. Do not let hydraulic brake fluid touch any painted surfaces, as it will remove the paint. Hydraulic brake fluid may also damage certain non-metal surfaces. Do not let fluid contact brake pads, shoes, rotors or discs.
Introduction
Meritor WABCO Kits 400 850 877 0, 400 851 877 0 and 400 851 886 0 contain the following parts:
- HCU (Hydraulic Compact Unit)
- Reservoir
- Screws (4)
The following kit assembly procedures describe the process of assembling the parts of a kit. Refer to Meritor WABCO Maintenance Manual MM-0401, Meritor WABCO Hydraulic Power Brake (HPB) System, for procedures to install the kit onto the vehicle.
How to Obtain Additional Maintenance, Service and Product Information
Refer to Maintenance Manual MM-0401, Meritor WABCO Hydraulic Power Brake (HPB) System. Call the Meritor OnTrac™ Customer Call Center at 866-OnTrac1 (668-7221) to obtain this publication. Meritor WABCO publications are also available on our website: meritorwabco.com
Kit Assembly
1. Wear safe eye protection.
2. Remove and scrap the plastic cover from the top of the HCU.
Scrap the four screws.
3. Install the reservoir onto the HCU using the four screws. Ensure that the four rubber bushings are in the correct position.
4. Tighten the reservoir screws to 3.69-5.16 ft-lb (5-7 N•m).
5. Refer to Maintenance Manual MM-0401, Meritor WABCO Hydraulic Power Brake (HPB) System, for the procedure to install the unit on the vehicle.
TP-09101
Revised 07-16
TP09101
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- Provides an extra margin of safety in extreme braking conditions
- Mix of polyglycol ethers ensures hot brake-system operation will not create dangerous vapor
- Excellent for ABS, disc and drum brake systems
- Delivers braking power when needed by avoiding a spongy pedal
- Both wet and dry boiling points exceed the minimum government standards
- High compatibility. Use with or direct replacement for DOT 3, DOT 4, and DOT 5. 1
- Extended Service Interval (ESI): Lasts 100 percent longer than DOT 3, 50 percent longer than DOT 4, and 10 percent longer than DOT 5. 1
- Exceeds all DOT 3, DOT 4, and DOT 5. 1 standards
- Wet boiling point ~ 365 DegreeF/Viscosity at -40 DegreeC ~ 685mm2/s
- Standard brake fluid has a recommended change interval of 2 years. The recommended change interval for Bosch ESI6 is 3 years.
- The 336⁰F wet boil point and 521⁰F dry boil point exceeds common characteristics for DOT 4 brake fluids
- Provides corrosion protection in brake components
- Matches needs of all DOT 4 manufacturer recommendations
- Compatible with all DOT 3 and DOT 4 applications
- Helps provide protection against brake failure from vapor lock
- Helps prevent corrosion in brake system
- Works with all brake system requiring DOT 3 fluids
- Exceeds federal motor vehicle safety standard No. 116
- Meets SAE spec. J1703.
- Premium DOT 3 Brake Fluid has a minimum boiling point of 450°F
- Meets and exceeds DOT 3 and all other Federal and SAE specifications and standards for motor vehicle brake fluids
- Mixes with all DOT 3 approved brake fluids
- Designed for use in disc, drum and ABS brake systems
- Premium brake and hydraulic clutch fluid that protects internal components from corrosion under normal use
- High boiling point to minimize brake fluid boiling and vapor lock
- Excellent low temperature capability and stability when used where lower cold viscosities are required
- Excellent low temperature capability and stability when used where lower cold viscosities are required
- Synthetic quality brake fluid
- Contains special ingredients to guard against vapor lock and moisture absorption
- Exceeds requirements for both DOT 3 and DOT 4 brake fluids
- Specially formulated for DOT 4 brake fluid applications
- Designed for use in disc, drum and ABS brake systems
- Maintains proper movement for safe, effective stopping performance
- Helps deliver a quieter braking system
- Produces smoother pedal travel
- Provides longer brake life and performance
- Install Wagner with total confidence
- An exclusive European formula with an exceptionally high boiling point and superior anti-vapor lock characteristics
- Superior braking during arduous conditions like racing and rallying
- Typical wet boiling point is 270deg. C
Last update on 2025-04-15 / Affiliate links / Images from Amazon Product Advertising API
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