Power Brake Booster Push Rod Gauging Hydraulic Brake Booster

Tools Required

J 37839 Push Rod Height Gauge

Gauge the piston rod. Use the J 37839. Check the maximum and minimum rod length.

If the piston rod is not within limits, replace the rod with a service adjustable piston rod. Adjust the replacement rod to the correct measurement.

Power Brake Booster Push Rod Gauging Vacuum Brake Booster

J 37839 Push Rod Height Gauge

1. Gauge the piston rod. Use the J 37839 . Check the maximum and minimum rod length.
2. If the piston rod is not within limits, replace the booster assembly as a complete unit. Do not attempt to grind or shave the push rod to compensate for incorrect length.