Wheel Cylinder Overhaul - Motor Trike GL1800 SPYDER / 2+2 Service Manual

3. Disconnect the brake line at the fitting on the back side of the brake backing plate.
4. Remove the screws that hold the wheel cylinder to the backing plate, and remove the wheel
cylinder from the Trike.
5. Installation is the reverse of the above removal procedure. After installation bleed, and adjust the
brakes as described earlier in this Section.

WHEEL CYLINDER OVERHAUL

See Figures 3 through 12.
Wheel cylinder overhaul kits may be available, but often at little, or no savings over a reconditioned wheel
cylinder. It often makes sense with these components to substitute a new, or reconditioned part instead of
attempting an overhaul.
If no replacement is available, or you would prefer to overhaul your wheel cylinders, the following
procedure may be used. When rebuilding, and installing wheel cylinders; avoid getting any contaminants
into the system. Always use clean, new, high quality brake fluid. (DOT4 for the HONDA GL1800) If
dirty, or improper fluid has been used, it will be necessary to drain the entire system. Flush the system
with proper brake fluid, (DOT4) replace all rubber components, then refill, and bleed the system. See
Brake Bleeding Section.
1. Remove the wheel cylinder from the Trike, and place on a clean workbench.
2. First remove, and discard the old rubber boots, then withdraw the pistons. Piston cylinders are
equipped with seals, and a spring assembly, all located behind the pistons in the cylinder bore. See
Fig. 3
3. Remove the remaining inner components, seals, and spring assembly. Compressed air may be
useful in removing these components. If no compressed air is available, be VERY careful not to
score the wheel cylinder bore when removing parts from it. Discard all components for which
replacements were supplied in the rebuild kit. See Fig. 4
Fig. 2: ... then lift it up, and off of the
backing plate.