Jeep Wrangler/YJ 1987-1995 Repair Guide

Clutch Master Cylinder

Imprimir

See Figure 1



Click image to see an enlarged view

Fig. Fig. 1: Clutch master cylinder installation

REMOVAL & INSTALLATION



  1. Raise and support the vehicle on jackstands.
  2.  
  3. Disconnect the hydraulic line at the cylinder. Cap the line.
  4.  
  5. Unbolt and remove the slave cylinder from the clutch housing.
  6.  
  7. Installation is the reverse of removal. Torque the mounting bolts to 19 ft. lbs. (26 Nm). Refill and bleed the system.
  8.  

OVERHAUL



1987-90 Models

See Figure 2

On 1991-95 models, the clutch master cylinder is a sealed unit which must be serviced by replacement only.



Click image to see an enlarged view

Fig. Fig. 2: Clutch master cylinder exploded view-1987-90

  1. Remove the cover and reservoir cap.
  2.  
  3. Remove and discard the dust boot from the pushrod.
  4.  
  5. Remove and discard the pushrod retaining snapring.
  6.  
  7. Remove the pushrod and washer.
  8.  
  9. Remove the plunger, valve spring and stem. It may be necessary to tap the assembly out of the bore with a rubber mallet.
  10.  
  11. Compress the valve spring enough to pry off the retainer and remove the spring and stem assembly from the plunger. The retainer tab should be pried upward with a thin screwdriver.
  12.  
  13. Remove the seals from the plunger and discard them.
  14.  
  15. Remove the spring retainer and valve stem from the spring.
  16.  
  17. Remove the valve stem from the retainer and remove the spring washer and stem tip seal from the end of the valve stem. Discard the stem tip seal and the spring washer.
  18.  
  19. Clean all parts thoroughly in a safe brake cleaning solvent. Discard any parts that show signs of wear, pitting or damage. If the core shows signs of excessive wear, deep pitting, severe corrosion or scoring, replace the entire master cylinder. Minor bore imperfections can be corrected by honing.
  20.  
  21. Lubricate the bore with clean brake fluid.
  22.  
  23. Position the new seal on the valve stem. The shoulder of the stem tip seal should fit into the undercut at the end of the valve stem.
  24.  
  25. Install the new seals on the plunger. The seal lips face the valve stem end of the plunger.
  26.  
  27. Install the new spring and retainer on the stem.
  28.  
  29. Install the plunger retainer in the spring.
  30.  
  31. Insert the