How to Bleed the Brakes on Your 2013 Triumph Tiger Explorer

Shop parts for a 2013 Triumph Tiger Explorer Motorcycle.

What You Are Working With

The 2013 Triumph Tiger Explorer uses hydraulic disc brakes at both wheels, with ABS. The front brake is a hydraulic circuit from the master cylinder and reservoir on the right handlebar to the front caliper bleeders. The rear brake is a separate circuit from a pedal-operated master cylinder with its own reservoir to the rear caliper bleeder. You will bleed each circuit on its own. A routine bleed at the calipers is the normal way to refresh fluid on this ABS-equipped tourer.

When to Bleed

Brake fluid absorbs moisture over time, which lowers its boiling point and can lead to brake fade under hard use. The Explorer often carries a passenger and luggage over long distances, so its brakes see a lot of heat on mountain descents. Many riders refresh the fluid on a regular schedule even when the brakes feel fine.

Other signs it is time:

  • A spongy lever, or one that pulls closer to the grip than it used to
  • A soft rear pedal
  • Dark or cloudy fluid in a reservoir
  • Recent work that opened the system, such as replacing brake lines, servicing a caliper, or master cylinder repair

Tools and Materials

  • Fresh brake fluid of the type marked on the reservoir cap, from a sealed container
  • A box-end wrench that fits the bleeder valve
  • Clear tubing that fits snugly over the bleeder
  • A catch bottle
  • A syringe or turkey baster
  • A screwdriver or driver for the reservoir caps
  • Rags or shop towels
  • Optional: a one-way check-valve bleeder or vacuum bleeder for working alone

Prep Work

Support the bike securely upright on its center stand. Turn the handlebars until the front reservoir is level. Cover the tank, bodywork, and dash with rags. Most brake fluids damage paint and plastic on contact; wipe up any spill immediately and rinse with water.

Step-by-Step Bleed

  1. Remove the front reservoir cap and diaphragm.
  2. Remove most of the old fluid with the syringe, keeping the bottom of the reservoir covered.
  3. Refill with fresh fluid.
  4. Fit the clear tube onto the bleeder of the front caliper farthest from the master cylinder and route it into the catch bottle.
  5. Squeeze and hold the lever.
  6. Open the bleeder about a quarter turn so fluid and air flow out.
  7. Close the bleeder before releasing the lever.
  8. Repeat, topping off the reservoir regularly so it never runs low enough to draw air in.
  9. When the fluid in the tube is fresh, clean, and bubble-free, close the bleeder.
  10. Bleed the second front caliper, if equipped.
  11. Bleed the rear caliper using the foot pedal, keeping the rear reservoir topped up.

Common Mistakes

Letting a reservoir run low is the mistake that causes the most trouble, because air drawn into the master cylinder can travel toward the ABS unit. Releasing the lever before closing the bleeder can pull air back in at the caliper. A loose tube can let air in around the bleeder and make it look like the system will never clear. Reusing old fluid from the catch bottle should never happen.

Finishing Up

Tighten each bleeder snugly without overtightening. Fill the reservoirs to the correct level marks, reinstall the diaphragms and caps, and clean away any spilled fluid. Check the bleeders and banjo fittings for leaks, and dispose of the old fluid properly.

The lever and pedal should feel firm and consistent and should not slowly sink under steady pressure. Spin both wheels to confirm the brakes are not dragging. Test the brakes at low speed in a safe area before riding normally.

When a Shop Is Needed

Take the bike in if the lever will not firm up after several bleeds, only firms up after pumping, keeps producing bubbles, or if fluid leaks from a master cylinder or caliper. If a reservoir ran dry or the ABS unit or its lines were disconnected, air may have entered the ABS unit, and the system may require a dealer-level procedure or diagnostic tool.

Related Shopping Categories

Shop Brake Fluid for a 2013 Triumph Tiger Explorer Motorcycle.

Shop Brake Lines for a 2013 Triumph Tiger Explorer Motorcycle.

Shop Brake Pads for a 2013 Triumph Tiger Explorer Motorcycle.

Shop Stands for a 2013 Triumph Tiger Explorer Motorcycle.

Shop Brake Tools for a 2013 Triumph Tiger Explorer Motorcycle.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.