The Nelson hydraulic reservoir with internal filter system is
located in the engine compartment. It is the reservoir for both the
hydraulic fan drive system and power steering system. The
hydraulic filter assembly is located inside the reservoir. The 25
micron* filter system is designed to protect the precision tolerance
hydraulic system components. Check the oil level in the reservoir
when the oil is at operating temperature. This should be done every
6000 miles or three months. The oil dipstick/oil fill is located on
top of the reservoir. The oil level should be kept between the full
and add marks on the dipstick. Change the hydraulic oil filters
every 15,00 miles or once a year. When performing fluid level
checks inspect fittings and hoses for signs of leakage. Avoid
untimely and costly failures by having leaks repaired. To change the
filter system a five gallon drain bucket will be needed. Loosen the
band clamp at the top of the reservoir and remove the lid. Place the
drain bucket under the reservoir and loosen one of the bottom fit-
tings to drain the reservoir. Drain only enough fluid from the reser-
voir to expose bottom filter, then tighten fitting. Remove the wing
nut, filter spring and filter washer. Remove the three drop in filters
and install the new ones. Install the filter washer and filter spring.
Tighten the wing nut until wing nut reaches end of threaded rod. It
is recommended to install new hydraulic fluid. Old fluid may con-
taminate the hydraulic system. Fill the reservoir with approximately
three to four gallons to the full mark. Install top and band clamp.
Run engine to purge any trapped air. Check fluid level after fifteen
minutes of operation. Total system capacity is approximately 44
quarts. Monaco filter number: 07010886. Nelson filter number:
84101B
*One micron is one millionth of one meter.
The M-100 series Sheppard steering gear requires no maintenance. Power
steering is provided by using hydraulic pressure to assist rotating the output
shaft of the steering gear. Located at the end of the input shaft of the steering
gear is a poppet valve and worm drive. The poppet valve directs the
hydraulic fluid pressure to a type of spool. There are worm drive threads in
the center of the spool. When in the center position, pressurized hydraulic
fluid bypasses the spool. When a turn is made the poppet valve shifts to one
direction or the other, directing the hydraulic pressure to one side of the
spool depending on turning direction. The hydraulic fluid is then cooled
before returning to the reservoir. Inspect for signs of leakage when perform-
ing fluid level checks. Changing the hydraulic filter at regular intervals will
help ensure trouble free operation.
Chassis Information
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WINDSOR
10•298
Hydraulic Filter
Reservoir
STEERING GEAR
Filter Assembly
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