Jeep Wrangler/YJ 1987-1995 Repair Guide

Brake Master Cylinder

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FLUID LEVEL CHECK



Without Anti-Lock Brake System

See Figures 1, 2 and 3



Click image to see an enlarged view

Fig. Fig. 1: Wipe all dirt and dust from the reservoir cover and remove the cover retaining clip



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Fig. Fig. 2: Carefully remove the master cylinder cover



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Fig. Fig. 3: Carefully add brake fluid to the master cylinder to the proper level. Remember brake fluid will remove the paint from any finish

The master cylinder is located under the hood, on the left side of the firewall. To check the fluid, use a suitable prytool to unfasten the retaining clip from the lid of the reservoir. The fluid level should be within 1 / 4 in. (6mm) of the top of the reservoir.

If the master cylinder is less than half full, there is probably a leak somewhere in the hydraulic system. Investigate the problem before driving the vehicle.

With Anti-Lock Brake System

See Figure 4

  1. Turn the ignition switch ON and allow the pump motor to operate until it automatically de-energizes.
  2.  
  3. The brake fluid level should be no lower than the MIN arrow indicator on the side of the reservoir. Add as necessary to raise the level to the MAX arrow indicator only.
  4.  

Clean the cover before removing it and do not overflow the reservoir.

  1. Turn the ignition switch OFF .
  2.  



Click image to see an enlarged view

Fig. Fig. 4: Reservoir fluid level-with anti-lock brakes

 
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