Toro Groundsmaster 5900 Series Service Manual page 157

Procedure for Deck Motor Case Drain Leakage Test
Groundsmaster ® 5900 & 5910
16227SL Rev B
Note: One method to find a failing or malfunctioning deck motor is to have a
second person observe the machine while mowing in dense turf. A bad motor
will run slower, produce fewer clippings and may cause a different appearance
on the turf.
To prevent hydraulic tester damage, use 40 GPM Hydraulic Tester
#AT40002 (pressure and flow) and Hose Kit for this test (see
Tools (page 2–15)).
Note: Two people will be required to complete the following test procedure.
Prevent personal injury and/or damage to equipment. Read all
WARNINGS, CAUTIONS and Precautions for Hydraulic Testing at the
beginning of this section.
1. Park machine on a level surface, lower cutting decks fully, disengage PTO,
engage parking brake and stop engine. Remove key from key switch. Make
sure the hydraulic reservoir is full.
Note: The side deck motors are connected in series. To isolate a faulty side
deck motor, both motors in the circuit may have to be tested by starting with
the left deck motor (refer to
1
g287775
1. Flow − in
2. Flow return − out
2. Disconnect hydraulic return hose from the deck motor to be tested
64).
Make sure that the oil flow indicator arrow on the flow gauge is
showing that the oil will flow from the motor, through the tester and
into the disconnected hydraulic hose.
IMPORTANT
CAUTION
A Hydraulic Schematic (page
3
Figure 64
3. Case drain
IMPORTANT
Page 5–57
Special
A–3)).
2
(Figure
Hydraulic System: Testing