1997 Chevrolet K3500 Replace Hydroboost Brake Booster

From WikituneUp - The Free Service Manual
Jump to: navigation, search

A 1997 Chevrolet K3500 truck is a heavy-duty truck with dual rear wheels. These trucks carry heavy loads, and as a result, require more braking power than the average truck. To make this happen, the truck uses a hydraulic brake booster instead of a vacuum brake booster, which is called a hydroboost. If your hydroboost unit has failed, then you can replace it with a new one in a few hours with a few tools.

[edit] Tools Used

Tools
Jack
Jack stands
Open-end wrench set
Line wrench set
3/8-inch ratchet and socket set
Masking tape
Permanent marker
Hydroboost
Power steering fluid

[edit] Replace Hydroboost Brake Booster

  • Park the truck and engage the emergency brake. Pump the brake pedal five times with your foot. Pop the hood on the truck. Unbolt the master cylinder from the hydroboost with an open-end wrench and pull it off of the hydroboost. Label the lines leading into the hydroboost with a permanent marker and masking tape in such a way that you will be able to figure out where the lines go when you reassemble the assembly.
  • Remove the lines running into the hydroboost with a line wrench. Move to the underside of the dash. Remove the clip securing the hydroboost linkage to the brake pedal with your hands. Unbolt the hydroboost from the firewall with the 3/8-inch ratchet and socket.
  • Pull the hydroboost off of the firewall. Install the replacement hydroboost on the firewall with the 3/8-inch ratchet and socket. Install the replacement hydroboost linkage to the brake pedal with the factory clip. Install the lines onto the replacement hydrobooster with a line wrench.
  • Install the master cylinder onto the hydroboost with an open-end wrench. Open the power steering pump cap on the driver's side of the engine and fill it up with additional power steering fluid, if necessary.
  • Lift the front of the K3500 with the jack and put jack stands under the frame. Start the engine. Turn the steering wheel all the way to the right, then all the way to the left, a total of 10 cycles to bleed air out of the power steering system. Lower the truck off of the jack stands with the jack.
Personal tools
Namespaces

Variants
Actions
Navigation
Interaction
Toolbox