Introduction
This document compiles information regarding vacuum pumps used in brake systems, specifically focusing on the experiences shared by owners of vehicles similar to the Toyota Prado. It addresses the question of whether or not to proactively service or overhaul the vacuum pump based on mileage recommendations.
Problem
The primary concern is the potential failure of the vacuum pump, which provides vacuum assistance to the brake booster, leading to reduced braking performance. The question is whether to replace the pump preventatively, service it by replacing internal components like blades, or wait for signs of degradation. There is also a question about whether electric vacuum brake systems have filters.
Solution
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Monitor Brake Performance: Several contributors suggested monitoring brake performance and waiting for a noticeable degradation in power brake assistance before considering any action. Heavy brake pedal feel is an indicator of a potential issue.
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Consider Mileage: While one contributor had the vacuum pump serviced at 200,000km as part of routine maintenance, others have surpassed this mileage without experiencing issues.
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Electric Vacuum Pump Filters: There is no confirmation of regular servicing or changing of filters on electric vacuum pump brake systems.
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Fluid Changes: While not directly related to the vacuum pump itself, regularly changing brake fluid is recommended for overall brake system health.
Relevant Parts
- Blades and packing for vacuum pump service (example cost: $170).
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