power steering pump
The power steering pump provides the pressure for the steering and brakes. Check the p.s. fluid.
The power steering and the power brakes share the same pump. The pump belt may be loose, the system may be low on fluid in which case you have a leak somewhere or the pump may be faulty.
Its has HydraBoost Braked, operates off the power steering pump.
The Astro Van power steering and brakes work off the same pupm. Check the pump for fluid. If it's full and the brakes and steering still hard you must replace the pump
Are the brakes out or is the power brake system not working properly. I believe those vehicles have the hydro boost power brake system. If so, the power steering pump is what applies the power brakes, no vacuum is needed. If something is wrong with the power steering pump (empty, no belt, malfunctioning) it will affect the power brakes as well.
If you have a hydroboost brake system (on 3/4 ton diesel and some 3/4 ton 454 trucks) you will not have power brakes if you loose the power steering pump. However, if you have any motor besides the 6.5 diesel or 7.4l, you have vaccume assisted power brakes. You can tell which you have by looking at the firewall where the master cylinder is, if you have a large round pancake looking thing attached to the back of the master cylinder you have vaccume brakes, if you have a small hydraulic gizmo (you can tell by the three power steering lines attached to the sides of it) you have Hydroboost brakes that operate off of the power steering pump. Troutman
Power steering pump failure, has power brake assist line conected to it. It uses the power steering pump to bring hydraulic pressure to master cylinder.
the problem is that your saft on your power stearing pump broke and that afects your power brakes to
A power steering pumps as much as the power steering pump can pump.
Remove the power steering pump hose. Remove the power steering pump belt. Remove the power steering pump retaining bolts. The power steering pump will come off.
Secure the power steering pump with the retaining bolts. Attach the power steering hose to the power steering pump. Put the belt on to the power steering pump. Fill the power steering system with fluid.