MULTIQUIP AR14H Operation Manual page 28

HYDRAULIC OIL SYSTEM
The hydraulic system consists of a two-pump stack directly
coupled to the engine. A hydraulic valve block (manifold)
is provided for quick and easy testing and troubleshooting.
Hydraulic oil is filtered by a screen filter located in the tank
filler neck, a 40 micron suction filter located in the tank, and
a 10 micron return filter, with cold oil bypass valve located
in the return circuit.
It is recommended that ISO 46 type hydraulic oil or
equivalent be used when adding or replacing the hydraulic
oil is required.
DO NOT USE MULTI-VISCOSITY OIL. Clean oil is a
very important part of proper hydraulic system operation.
Hydraulic oil is not only used to transfer power; it also
lubricates and cools the system components. Keeping
the hydraulic system clean can help reduce costly repairs.
The hydraulic oil level sight glass is located on the right
rear of the front drum, below the engine compartment. This
level should be checked daily. Oil must be below the top and
above the bottom of the sight glass. DO NOT OVERFILL!
Care should be taken to clean the filler cap before adding oil
to the system. If hydraulic oil has to be added, the machine
should be inspected for leaks.
The suction filter (Figure 28) is located inside the hydraulic
tank. This filter is attached to the fitting connected to the
hydraulic pump suction hose.
The return filter (Figure 28) is located at the front of the
engine compartment. Replace both filters according to the
Table 5.
CAUTION
DO NOT open hydraulic lines or loosen hydraulic fittings
while engine is running! Hydraulic fluid under pressure
can penetrate the skin, blind, cause burns or create
other potentially dangerous hazards follow all safety
instructions as described throughout this manual.
CHANGING HYDRAULIC OIL AND FILTERS
1. Park the roller on a clean flat work area and set the
parking brake.
PAGE 28 — AR14H RIDE-ON ROLLER • OPERATION MANUAL — REV. #3 (09/06/19)
2. Remove the hydraulic oil drain plug (Figure 28) and
drain the hydraulic oil. Dispose of the used oil in an
environmentally friendly manner. Replace the drain
plug and tighten.
HYDRAULIC OIL
CAP/FILLER PORT
HYDRAULIC OIL
DRAIN PLUG
Figure 28. Hydraulic Filter Locations
3. Remove the return filter and install a new filter. Dispose
of the used filter in an environmentally friendly manner.
4. Disconnect the suction hose and remove the fitting from
the tank. Replace the suction filter. Dispose of the used
filter in an environmentally friendly manner. Replace
the fitting and reconnect the suction hose.
FREEWHEEL ENGAGEMENT VALVE
NOTICE
The freewheel engagement valve (towing) is only for
emergency use. DO NOT move roller over 2 MPH or
long distances as hydraulic system component failure
could result.
This hydraulic system has a freewheel engagement valve
allowing hydraulic oil to be bypassed. Open (turn allen
wrench counterclockwise) this valve (Figure 29) to engage
the freewheel capability of the roller. When the valve is fully
opened, ports A and B are allowed to connect, bypassing
the oil to and from the drum drive motors.
MAINTENANCE
HYDRAULIC OIL
RETURN FILTER