Toro Reelmaster 5510 Series, Service Manual

Page: 234 / 662

Testing the Mow Circuit–Reel Motor Efficiency/Case Drain (5610-D)
g216142
Figure 124
The reel motor efficiency/case drain test is the second in a series of tests
recommended to check the cutting unit circuit performance. Over a period of
time, a reel motor can wear internally. This test measures case drain volume
while restricting flow across the motor ports. Case drain volume under load of
more than 9% of total motor flow indicates the gears and wear plates in the
motor have worn. A worn motor may bypass the hydraulic fluid to its case drain
causing the motor to be less efficient. Eventually, enough fluid loss will cause the
reel motor to stall under heavy cutting conditions. Continued operation with a
worn, inefficient motor can generate excessive heat, cause damage to seals and
other components in the hydraulic system, and affect quality of cut.
Hydraulic System: Testing the Hydraulic System Page 6–116 Reelmaster ® 5410/5510/5610 Series
15216SL Rev C