Pressure
On some engines, you need to remove one or both manifolds (See Exhaust manifold gasket replacement ) to reach the crankcase side cover.
<Seal selection example>
Based on the above flowcharts, the oil seal type that meets the requirements shown in Table 3 would be the type code MHSA or HMSA shown in Table 4.
Shaft Surface Finish
The steering gear sector shaft is located inside of the steering gear box, and turns the pitman arm when activated by the steering wheel. This causes the wheels to turn. The steering gear sector shaft seal keeps fluid from leaking out of the steering gear box. The fluid inside the gearbox keeps the rotating parts moving smoothly while preventing metal-on-metal contact. If you notice fluid leaking around the steering box, pitman arm, or sector shaft, check the steering gear sector shaft seal for damage. If you need replacement steering parts or seals, check out O'Reilly Auto Parts and find the right fit for your car, truck, or SUV.
Oil seals are also known as rotary shaft seals or lip seals. They are flexible rings of elastomer designed to secure boundaries between moving and stationary components in a machine. Although these rings are flexible, they are durable enough to withstand wear, tear, friction, and exposure to oil.