Filter
Top Products
Greensmaster 3150 Hydraulic SystemPage 4 -- 51
Flush Hydraulic System
IMPORTANT: Flush the hydraulic system any time
there is a severe component failure or the system is
contaminated (oil appears milky or black or con-
tains metal particles).
IMPORTANT: Flush hydraulic system when chang-
Ing from petroleum base hydraulic f luid. Operate
machine under normal operating conditions for at
least four (4) hours before draining.
1. Park the machine on a level surface, engage the
parking brake, lower the cutting units and stop the en-
gine. Remove key from the ignition switch.
CAUTION
Before continuing further, read and become fa -
miliar with General Precautions for Removing
and Installing Hydraulic System Components.
2. Clean area around gear pump and pump inlet hose
(Fig. 34). Clamp pump inlet hose. Remove hose from
gear pump, release clamp and drain reservoir into a suit-
able container. Drain hydraulic system while making
sure lift cylinders, hydraulic hoses, hydraulic tubes and
all other components are drained from low points while
the system is warm.
3. Clean hydraulic oil filter mounting area. Remove fil-
ter and drain into a suitable container. Discard filter.
4. Inspect and clean hydraulic reservoir (see Hydraulic
Reservoir in the Service and Repairs section of this
chapter).
5. Make sure filter mounting surface is clean. Apply hy-
draulic oil to gasket on the new filter. Screw filter on until
gasket contacts mounting plate, then tighten filter 3/4
turn further.
NOTE: Use only hydraulic fluids (including biodegrad-
able) specified in the Traction Unit Operator’s Manual.
Other fluids could cause system damage.
6. Reconnect all hydraulic hoses and lines that were
disconnected prior to dr aining. Fill hydraulic reservoir.
7. Disconnect both spark plug wires from spark plugs
to prevent the engine from starting.
8. Turn ignition key switch; engage starter for ten (10)
seconds to prime the hydraulic pumps. Allow the starter
to cool for one (1) minute and then repeat this step
again.
9. Reconnect both spark plug wires t o spark plugs.
10.Start engine and let it idle at low speed for a minimum
of two (2) minu tes. Increase engine speed to high idle for
minimum of one (1) minute under no load.
11.Raise and lower cutting units several times. Rotate
steering wheel in both directions several times.
12.Shut off engine and check for hydraulic oil leaks.
Check oil level in hydraulic reservoir and add correct oil
if necessary.
13.Operate the machine for two (2) hours under normal
operating conditions.
14.Check condition of hydraulic oil. If the new hydraulic
oil shows any signs of contamination, or if you are
changing to biodegradable fluid, repeat steps 1 through
13 again.
15.Assume normal operation and follow recommended
maintenance intervals.
Figure 34
PUMP INLET HOSE
Hydraulic
System