Any Harley trikes having to pump the rear brakes several times to get a firm stop? I've changed the brake fluid, bleed the system, etc. but the soft pedal keep occurring. No fluid leak. Only 5000 miles on the bike.
Any Harley trikes having to pump the rear brakes several times to get a firm stop? I've changed the brake fluid, bleed the system, etc. but the soft pedal keep occurring. No fluid leak. Only 5000 miles on the bike.
Sounds like your master is leaking internally, may need a rebuild kit
Are you getting air out @ the calipers?
Pumping the brakes up to get a better pedal is a sure sign of 1 an apparent leak
2 a leaking piston seal in the master cylinder
You mention low mileage, keep in mind even low mileage with contaminated fluid can ruin master and caliper seals, scoring inside will lead to a weak and or no pedal
Hope you have this sorted out by now if not maybe this will help. Rear brake fluid change and caliper ebrake adjustment is usually the cause on wifes trike when pedal is low.
[QUOTE=Jack Klarich;887459]Sounds like your master is leaking internally, may need a rebuild kit
<br>
Are you getting air out @ the calipers?<br>
<br>
Pumping the brakes up to get a better pedal is a sure sign of 1 an apparent leak<br>
2 a leaking piston seal in the master cylinder<br>
<br>
You mention low mileage, keep in mind even low mileage with contaminated fluid can ruin master and caliper seals, scoring inside will lead to a weak and or no pedal[/QUOTE]
2/6/2023 - tried everything I could think of...took trike to a shop that had a mechanic that thought he'd be able to find and fix the problem. No such luck (read the attached invoice). Bottom line - we tried rebuilding the master cylinder - did no good. Still have the soft pedal.
Can you post a picture of rear calipers?
[FONT=sans-serif]3.10 Install Brake Lines[/FONT]
[FONT=sans-serif]a.[/FONT][FONT=sans-serif]Connect Blue Brake Pressure Residual[/FONT]
[FONT=sans-serif]Valve to T-Block using a crush washer in[/FONT]
[FONT=sans-serif]between. Torque down to 17 to 19 Foot[/FONT]
[FONT=sans-serif]Pounds.[/FONT]
[FONT=sans-serif]b.[/FONT][FONT=sans-serif]Connect OEM brake line from rear master[/FONT]
[FONT=sans-serif]cylinder to Brake Pressure Residual Valve[/FONT]
[FONT=sans-serif]using 10mm single banjo bolt and two crush[/FONT]
[FONT=sans-serif]washers. Torque down to 17 to 19 Foot[/FONT]
[FONT=sans-serif]Pounds.[/FONT]
[FONT=sans-serif]c.[/FONT][FONT=sans-serif]Using brake fluid specified on the master[/FONT]
[FONT=sans-serif]cylinder, bleed rear brake system.[/FONT]
[FONT=sans-serif]d.[/FONT][FONT=sans-serif]Thoroughly bleed system using the [/FONT][FONT=sans-serif]upper[/FONT]
[FONT=sans-serif]bleeders on Rear Brake Calipers.[/FONT]