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/PT 53-0001.pdf
JDA1320 PT 53 0001 Solving Brake Lockup on Honda Acura Boosters Acura and Honda power brake boosters and master cylinders Brake lockup occurs after changing power brake booster or master cylinder Pedal push rod to master cylinder piston clearance incorrect Because of original manufacturer variations the adjustment between the booster pedal rod and master cylinder must be checked when replacing either unit Proper adjustment can not be made until vacuum is applied to the booster To properly adjust the master cylinder push rod a special gauge is required Please refer to vehicle service manual for specific procedure and required tool tool 07JAG SD40100 See figures 1 2 below To adjust rod position loosen the star lock nut at the base of the booster Then turn larger hex nut to adjust the push rod to piston clearance as needed see figure 3 below Tighten star lock nut and install unit as per installation instructions Application Problem Cause Solution Figure 1 Adjusting Master Cylinder Push Rod Figure 2 Checking Brake Booster Push Rod Clearance Push Rod Adjustment Gauge 07GAG SE00100 Primary Piston Adjuster Lock Nut Bolt Master Cylinder Vacuum Gauge 18 21 in Hg Push Rod Adjusment Gauge 07GAG SE00100 Feeler Gauge Turn Adjustment Hex Nut Adjustment Pedal Rod Turn adjustment nut clockwise to move rod in counter clockwise to move rod out Star Lock Nut Large Adjustment Hex Nut Figure 3 Why Choose Power Brake Boosters Full line coverage Complete coverage from passenger cars to medium duty trucks on Loaded Domestic Vacuum Boosters Unloaded Domestic Vacuum Boosters Hydro Vac Boosters Import Vacuum Boosters Hydraulic Boosters Coverage from 1945 to 1999 54 years of coverage Limited lifetime warranty Contact your local auto parts store or visit our web site www cardone com for more information on this and other CARDONE products today
