Monaco SIGNATURE 2001 series, Owner'S Manual

Page: 300 / 327

• Inspect the O-rings for cuts or
damage. Replace if needed,
otherwise lube with motor oil
or clean the fuel and replace.
• Install the pre-filter back into the
bottom block (the pre-filter
arrow points down), and
replace the top block making
sure the O-rings are properly
seated.
• Replace the thumb bolt and
tighten by hand. Using pliers,
turn the bolt 3/4 of one turn
firmly to seat the O-ring seals.
NOTE: Over tightening may result in damage to the unit.
• Activate the “AIR PURGE” switch, start and operate the engine at high
idle for about 3 minutes.
The motorhome uses an engine driven hydraulic pump to operate both the
power steering system and the engine hydraulic cooling fan system. The
hydraulic pump is a dual stage pump which uses one half of the pump to
supply pressurized hydraulic fluid to the power steering. The other half of the
pump supplies the engine cooling fan motors. The hydraulic system uses the
same fluid for both systems, sharing one common reservoir. The hydraulic
fluid used is an automatic transmission fluid (Dexron3) which has a wide
ambient temperature operating range.
CAUTION: If ambient temperatures approach 0º F, Penzoil Artic
Blue hydraulic fluid, or equivalent hydraulic fluid, should be used.
Using incorrect hydraulic system fluid weights in cold or arctic
temperatures will raise the hydraulic system operating pressure
and may damage the hydraulic cooler.
The hydraulic pump creates pressure by meshing sets of gears together
inside a close tolerance housing. A filtered supply of hydraulic fluid from the
hydraulic reservoir enters the intake side of the pump. The meshing gear
assembly “squeezes” the oil through the pump to the output side delivering
the pressurized fluid to the power steering gear and the switching valve of
the engine cooling system. Each half of the pump is equipped with an inter-
nal by-pass pressure relief spring. If the hydraulic pressure should exceed the
Chassis Information
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S I G N A T U R E 1 0 • 3 0 0
HYDRAULIC
SYSTEMS
(ISM)
Hydraulic Pump
Water Pump.