PREVENTATIVE MAINTENANCE
a.
Disc Brake System
The disc brake system includes brake fluid/oil and is engaged by squeezing the
left brake handle, where the brake fluid/oil reservoir is also located. It can be
inspected and maintained as follows:
1. Check the brake fluid/oil level in the reservoir. If the level falls below the
bottom score line, add ONLY either DOT3 or DOT4 brake fluid/oil until it
reaches the upper score line. NOTE: A drop in the brake fluid/oil level
indicates potential plate friction, brake disc wear or brake fluid leakage, and
further inspection into these potential issues is needed.
2. If the brake fluid/oil changes color, replace it with new braking fluid/oil.
3. Check the brake pad and brake disc wear condition. When any of the brake
pads is worn down to the marking line of 3mm or 3.5mm, it must be replaced
in pairs. The disc brake thickness and wear limits may differ slightly from
eTrike model to model.
4. If the left brake handle is spongy or has little resistance or effectiveness
when squeezed, exhaust the left brake system as follows:
i. Remove the main cylinder cover and add brake fluid/oil until the fluid
level reaches the upper score line. Close the cover to prevent debris from
entering.
ii. Use a hose with one end connected to the caliper oil drain screw and the
other end to an appropriate container.
iii. Quickly squeeze and release the left hand brake a few times, and then
hold the hand brake in place on the last squeeze.
iv. While the hand brake is being held in place, loosen the air release screw
by turning it counterclockwise one quarter inch. This will allow any
foamed brake fluid/oil to be released through the hose and into the
container.
v. Tighten the air release screw.
vi. Repeat steps 3 through 5 until all of the foaming brake fluid/oil is emptied
and the brake handle is no longer spongy and has proper resistance and
effectiveness.
vii. Tighten the drain screw and disconnect the drain pipe.
viii. Add brake fluid/oil to the main cylinder until it reaches the upper score
line.
ix. Close the cover.
