Beretta V6-173 2.8L (1989)
Proportioner Valves
REMOVE OR DISCONNECT
1. Proportioner valve caps.
NOTE: In order to remove the proportioner valve caps, it may be necessary to remove the master cylinder reservoir.
2. Proportioner valve cap "O" rings and discard.
3. Proportioner valve piston springs.
4. Proportioner valve pistons using needle nose pliers with care not to scratch or otherwise damage piston stems.
5. Proportioner valve seals from valve pistons.
6. Clean all parts in clean, denatured alcohol and dry with unlubricated compressed air.
7. Inspect proportioner valve pistons for corrosion, or deformation and replace if found.
INSTALL OR CONNECT
1. Lubricate new proportioner valve cap "O" rings and proportioner valve seals with silicone grease supplied in repair kit. Also lubricate stem of
proportioner valve pistons.
2. New proportioner valve seals on proportioner valve pistons with seal lips facing upward toward proportioner valve cap.
3. Proportioner valve pistons and seals in master cylinder body.
4. Proportioner valve piston springs in master cylinder body.
5. New proportioner valve cap "O" rings in grooves in proportioner valve caps.
6. Proportioner valve caps in master cylinder body and tighten to 27 Nm (20 lbs ft).
7. Master cylinder reservoir, if removed.
