850 T-5R L5-2.3L Turbo VIN 58 B5234T5 (1995)
Brake Fluid: Service and Repair
Special tool(s): 1158147 torque socket and 999 2809 brake piston puller
Replacement guidelines
We recommend replacing brake fluid every 48,000 km (30,000 miles), or every second year. In cars where the brake is used hard and often (e.g. in
mountains or tropical areas of high humidity) fluid should be replaced each year.
Background
The reason brake fluid has to be changed is that it is hydroscopic. In other words, it absorbs water molecules from the air. This water is absorbed
amongst other things via the brake hoses and brake fluid reservoir, which are made of rubber and plastic respectively, and are not totally impervious to
water molecules.
Increasing the water level in the brake fluid means that the brake fluid's boiling point falls considerably and corrosion forms on the braking system
components. This damages the braking system and makes it much less effective.
NOTE: Use genuine Volvo brake fluid marked DOT 4+. Never reuse brake fluid. Always keep brake fluid in original pack and well sealed.
Preparations [LL1]
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Obtain equipment (bleed unit) which can be used to pressurize braking system to 2-3 bar (34-43 psi).
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Obtain a collecting bottle and hose to collect brake fluid in.
Connecting bleed unit [LL2]
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Connect bleed unit to brake fluid reservoir. Follow manufacturers' instructions for connecting and using bleed unit.
Removing wheels [LL3]
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Jack car up and remove wheels all around.
Removing brake pads, rear [LL4]
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Remove brake pads from one of the rear brake calipers, as per KB2-KB3. Then continue as per instructions below. See: Brake Caliper/Service
and Repair
Replacing brake fluid, rear [LL5]