Toro Reelmaster 6500-D Service Manual page 77

Cutting Units Will Not Lower
Cause
Solenoid Valve SV1 not shifting.
Solenoid valve(s) SV3, SV4, or SV5 not shifting.
Solenoid valve(s) SV6 or SV7 not shifting.
(Reelmaster 6700-D #6 & #7 cutting units only)
Solenoid Valve SV2 not returning.
Relief valve R3 by-passing oil.
Flow control valve(s) closed.
Reelmaster 6500-D/6700-D
Correction
Do electrical diagnostics to make sure that voltage is
being applied to SV1 and that there is no electrical
fault. See Chapter 5 - Electrical System.
Test solenoid coil. Replace if faulty. See Chapter 5 -
Electrical System.
Do cartridge valve service procedure for valve SV1.
Replace faulty valve.
Do electrical diagnostics to make sure that voltage is
being applied to solenoid for affected circuit and that
there is no electrical fault. See Chapter 5 - Electrical
System.
Test solenoid coil. Replace if faulty. See Chapter 5 -
Electrical System.
Do cartridge valve service procedure for valve in
affected circuit.
Interchange suspect valve with any of the remaining
valves (SV3 thru SV7) and check operation.
Replace faulty valve.
Do electrical diagnostics to make sure that voltage is
being removed from SV2 and that there is no electrical
fault. See Chapter 5 - Electrical System.
Do cartridge valve service procedure for valve SV2.
Replace faulty valve.
TEST NO. 4. Replace faulty valve.
Adjust flow control valve(s) to desired lowering speed.
Rev. E
Page 4 - 35 Hydraulic System