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• Hydromax brake fluid reservoir
Chassis with Gross Vehicle Weight Ratings of 20,500 lb (9,299 kg),
22,000 lb (9,979 kg), 24,000 lb (10,886 kg) and 26,000 lb (11,793 kg)
are equipped with Hydromax Brake Booster Systems and must use
Motorcraft Super DOT 4 Motor Vehicle Brake Fluid or equivalent meeting
Ford Specification ESD-M6C57-A. Refer to Maintenance product
specifications and capacities in this chapter.
• Hydroboost brake fluid reservoir
Chassis with Gross Vehicle Weight Ratings of 16,000 lb (7,257 kg) and
18,000 lb (8,165 kg) are equipped with Hydroboost Brake Booster
Systems and must use Motorcraft High Performance DOT 3 Motor
Vehicle Brake Fluid or equivalent meeting Ford Specification
WSS-M6C62-A. Refer to Maintenance product specifications and
capacities in this chapter.
Note: On Hydromax brake systems a clear gel-like substance in the
hydraulic brake master cylinder reservoir may appear on some vehicles.
This substance is a silicone base lubricant used during assembly of the
master cylinder. It will float on top of the brake hydraulic fluid in the
master cylinder. This condition is normal and in no way affects the
operation of the brake system. It does not require any service.
1. Clean the reservoir cap before removal to prevent dirt or water from
entering the reservoir.
2008 Motorhome (mot)
Supplement
USA (fus)
Maintenance and Specifications
113
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