Isuzu Cars and Trucks 1981-1991

Hydraulic Unit

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REMOVAL AND INSTALLATION
  1. Disconnect negative battery cable.
  2.  
  3. Raise and support vehicle safely.
  4.  
  5. Remove under cover to gain access to hydraulic unit.
  6.  
  7. Remove tire if needed and remove inner fender liner.
  8.  
  9. Disconnect harness connectors from hydraulic unit.
  10.  
  11. Remove radiator reservoir tank.
  12.  
  13. Remove brake lines using a flare nut wrench. Cap or tape brake line ends to prevent entry of foreign matter.
  14.  
  15. Disconnect hydraulic motor ground cable.
  16.  
  17. Remove bracket attaching bolt, hydraulic unit attaching nut, bracket and hydraulic unit.
  18.  
  19. Installation is the reverse of removal. Torque hydraulic unit attaching nut, bracket attaching bolt and ground cable bolt to 17 ft. lbs. Torque brake line to 9 ft. lbs.
  20.  
  21. Bleed the brake system.
  22.  


NOTE
Replace all components included in repair kits used to service this system. Lubricate rubber parts with clean, fresh brake fluid to ease assembly. Do not use lubricated shop air to clean parts, as damage to rubber components may result. Always bleed the braking system after repairing or replacing hydraulic components.



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Fig. ABS hydraulic unit removal and installation

 
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