Tracker 4WD V6-2.5L VIN 4 (2001)
Brake Fluid: Description and Operation
Brake Fluid and Brake Fluid Handling
Substandard or Contaminated Brake Fluid
Important:
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Use only Delco Supreme 11 Brake Fluid, GM P/N 1052535, or equivalent DOT 3 fluid.
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Do not use power steering or transaxle fluid in the brake system.
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Do not reuse brake fluid collected during system bleeding.
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Always store brake fluid in a closed container.
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Reseal brake fluid containers immediately after use.
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Do not use brake fluid left in an open container or an improperly sealed container because it absorbs moisture or can become contaminated.
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The following fluids may cause the brake fluid to boil or the rubber components in the hydraulic system to deteriorate:
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Water
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A silicone based fluid
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A petroleum based fluid
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Mineral oil
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The following conditions provide evidence that the rubber components have deteriorated:
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Swollen primary piston cups
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Swollen piston cups on the drum brake wheel cylinders
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Substandard or contaminated brake diaphragm
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Substandard or contaminated master cylinder cover diaphragm
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If deterioration of rubber is evident, complete the following procedure:
1. Disassemble all of the hydraulic parts.
2. Wash all of the parts with alcohol.
3. Dry these parts with non-lubricated compressed air before assembly in order to keep alcohol out of the system.
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Replace all of the rubber parts in the system, including the hoses.
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Inspect the brake linings for fluid. If excessive fluid is found on the brake linings, replace the brake linings.
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If the master cylinder piston seals are satisfactory, inspect for the following conditions:
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Leaking
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Excessive heat
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If these conditions are not found, flush the hydraulic brake system. Refer to Hydraulic Brake System Flushing.