× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Brakes Hard
Posted to HD/Fleet Forum on 2/2/2015 6 Replies

Hello everyone, I have a C7500 here that had problems with it looking power steering assist when braking and turning at the same time. Replaced ps pump and that solved that issue. The hydra-boost unit was leaking so I advised to repair as well. I ordered a reman unit and installed after putting everything together the vehicle has a hard pedal. It feels like there is no boost. I decided to try another reman unit but had the same result. Is there anything I'm overlooking? It has the electric motor on the bottom of the boost unit. I have taken this apart many times hoping I would catch something I did wrong. Thanks for the help!!

Brad Krohn
Owner/Technician
Krohn Car Care
Ponca, Nebraska, USA

6 Replies Received (View Replies)

 

car Vehicle Data

2001 GMC C7500 Topkick C7H042 8.1L

Engine8.1 L

car Vehicle Data

2001 GMC C7500 Topkick C7H042 8.1L

Engine8.1 L