Flushing The Hydraulic System - Toro Reelmaster 5100-D Service Manual

Flushing The Hydraulic System

IMPORTANT: Drain and refill reservoir, change oil
filter and flush hydraulic system if component fail ­
ure was severe or system is contaminated (oil ap ­
pears milky or black or contains metal particles.
1. Lower cutting units, stop engine, engage parking
brake and remove key from ignition switch.
2. Put drain pan under reservoir (Fig. 101). Remove
drain plug from bottom of reservoir and let oil drain into
pan. Install drain plug.
3. Inspect and clean reservoir (see Inspecting Reservoir
Parts).
4. Clean area around filter mounting area. Remove and
discard filter (Fig. 102). Make sure filter mounting sur­
face is clean. Apply hydraulic oil to gasket on new filter.
Fill filter with hydraulic oil. Screw filter on until gasket
contacts mounting plate, then tighten filter one-half turn.
5. Fill hydraulic reservoir with approximately 8.5 gallons
of hydraulic oil and install reservoir cap.
Use only hydraulic oils specified (see Specifica ­
tions section of this chapter). Other fluids could
cause system damage.
6. Disconnect fuel stop solenoid electrical connector to
prevent engine from starting.
7. Turn ignition key switch to engage starter for ten (10)
seconds to prime pump. Repeat this procedure again.
8. Connect fuel stop solenoid electrical connector.
9. Start engine and let idle at low speed for minimum of
two (2) minutes.
10. Increase engine speed to high idle for minimum of
one (1) minute under no load.
11. Turn steering wheel fully left and right several times.
12. Raise and lower cutting units several times.
13. Engage cutting units and run under no load for five
(5) minutes.
IMPORTANT: Stop engine and remove bedknife to
reel contact before operating cutting units under no
load. Operating cutting units with bedknife to reel
contact will cause reel and bedknife cutting edges
to "rifle" and/or become dull.
®
Reelmaster 5100-D
14. Shut off engine and check for hydraulic oil leaks.
Check oil level in hydraulic reservoir and add correct oil
if necessary.
15. Replace hydraulic filter again after first 10 to 15
hours of operation, or sooner if filter bypass indicator
enters the RED zone when the engine is running.
1
Page 4 - 67 Rev. A
1
Figure 101
1. Hydraulic reservoir
Figure 102
1. Hydraulic filter
Mowing Circuit Repairs