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Master Cylinder: Reassembly

  1. Lubricate new reservoir grommets with silicone brake lube and press into master cylinder. Make sure grommets are properly seated. Lay reservoir on flat, hard surface. On Astro and Safari models, place block of wood under front reservoir to bring up to level of rear reservoir.
  2. Rock master cylinder body onto reservoir until completely seated. Lubricate new piston seals and install on secondary piston, with lip of seals towards ends of piston. Install spring retainer.
  3. Install secondary piston spring and secondary piston assembly in master cylinder. Lubricate primary piston seals with clean brake fluid.
  4. Install primary piston in master cylinder. Press in piston and install snap ring. Fit diaphragm in reservoir cover and install cover.
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