Power Steering Maintenance
LUBRICATION - STEERING GEARS The lubricant used in the power steering system is the
medium by which hydraulic pressures are applied and relieved, under control, to effect
steering assist.
In addition the lubricant also lubricates moving parts and dissipates heat which reduces
efficiency and accelerates wear. It is of the utmost importance to use a lubricant specified
and approved by R.H. Sheppard Co., Inc. in the Sheppard Steering Gear.
The Sheppard Gear requires the use of 10W-30 Motor Oil. Highway vehicles should have
the oil changed twice a year or every 50,000 miles. Off highway vehicles will require more
frequent change intervals.
The power steering pump reservoir must be kept filled to the proper indicator level and free
of air. When filling the reservoir, start the engine and turn the steering wheel from left to
right and continue filling until proper level is maintained. (See final adjustments section for
system bleeding procedures).
A replaceable type filter element is located in the reservoir. Carefully clean any build-up of
dirt and grease form the reservoir cover. Remove the reservoir cover and filter element.
Clean inside of reservoir with a lint free cloth. Install a new filter element refill with oil and
replace cover.
LUBRICATION - BEARING CAPS To lubricate the dirt and salt seals in the bearing cap, and
flush out any contaminants that have passed these seals, chassis grease should be added
with low pressure per the lube chart.
1. Steering Orbitrol
311P/N 12261-683 REVISED: January 2015
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