The power steering system used in a 1975 General Motors Chevrolet C-10 truck is still utilized on some trucks today. It consists of a power steering pump that is driven by a belt, a high-pressure hose that carries power steering fluid to a steering sector (often called a steering box) and a fluid return hose. All of these parts comprise the power steering system and must work together to control the vehicle.
This process does not require tools.
Troubleshoot Power Steering System
Raise the hood of the truck. Inspect the drive belt. On older models there are multiple belts, and each one must be tight. If the belt is cracked and weathered or loose and slipping, replace it.
Inspect the power steering hoses. There are two hoses attached to the back of the pump. One is a high-pressure hose that is threaded into a large, 1-inch nut. This reinforced hose sends fluid to the steering sector. Because it is under high pressure, it is prone to develop leaks over time and is a common repair item. Replace it if it is leaking.
Examine the low-pressure hose. It seldom leaks since it is strictly a fluid return hose that brings fluid from the sector to the pump. It does not have a threaded fitting on the back of the pump and is held in place by a clamp. Although unlikely, replace the hose if it develops a leak.
Inspect the steering sector. There is only one location that can cause severe problems, that being the output seal located directly above the Pitman arm. This arm transmits left and right steering motion, and power steering fluid can leak out after years of service. Replace the steering sector if there is a leak.
Check the pump. If it is leaking from the front seal located behind the pulley, replace it. If it is full of fluid and whines or makes a grinding noise, replace the pump. If the pulley is bent and wobbles, replace it.
0 Comments