Master Cylinder 2002 Fleetwoord Workhorse

I have the hydro-boost system. I will bleed and replace fluid first. thanks for advise

PortWentworthSam......I had an 04 Fleetwood Terra with the 8.1L Workhorse chassis. They had brake issues for several model years, including bad calipers. Unless yours if different, I believe your master cylinder booster is powered by the power steering pump.

Personally, I would do the front and rear brakes, add new rubber brake lines to the front calipers (this was an issue for awhile with the hoses collapsing). Bleed the entire system with a synthetic fluid and see how the brakes work. If they're still spongy, then look at the master cylinder.

cmarq wrote:
Check Omey's website a large list of workhorse part numbers

OP, here's their website. Oemys-performance.com

Real nice people to work with, too, if you need to order anything from them.

Before you replace the master cylinder, when was the last time the brakes were bled? If it was more than a couple of years ago, I'd give that a shot first.

~Rick

Check Omey's website a large list of workhorse part numbers

I took mine off of a P 30 and went to NAPA. they got an exact match the next day.