Service Manual

Reelmaster 5200-D/5400-DHydraulic System Page 4 - 24
Problem Possible Causes
No cutting units will operate. Lower-mow/raise lever was improperly used.
Electrical problem exists (see Chapter 5 - Electrical System).
Gear pump or its coupler is damaged (Steering and lift circuits are
also affected).
Front (Rear) reels will not turn in ei-
ther direction.
Solenoid valve S1 (S2) is not shifting.
Relief valve R1 (R2) is by-passing.
Solenoid valve S7 is partially shifted.
Solenoid valve S7 energized (see Chapter 5 - Electrical System).
Front (Rear) reels turn too slowly. Relief valve R1 (R2) is by-passing.
Solenoid valve S7 is partially shifted.
Solenoid valve S8 (S9) is partially shifted.
Reel motor has internal leakage (by-passing oil).
Gear pump section P1 (P2) is inefficient.
Front (Rear) reels turn only in one
direction.
Solenoid valve S8 (S9) is not shifting.
Front (Rear) reels stop or won’t start
- during backlap only.
Reel motor has internal leakage (by-passing oil).
Load too high for motor.
Front (Rear) reels stop under load. Relief valve R1 (R2) is by-passing.
Reel motor has internal leakage (by-passing oil).
Gear pump section P1 (P2) is inefficient.
Cutting units will not raise. Flow control valve is closed.
Engine RPM is too low.
Solenoid valve S7 is not shifting.
Solenoid valve S3, S4, or S5 is not shifting.
Relief valve R1 is by-passing.
Lift cylinder(s) has(have) internal leakage.
Lift arm pivots are binding.
Gear pump section P3 is inefficient.
Cutting units raise, but will not stay
up.
Solenoid valve S6 energized (See Chapter 5 - Electrical System).
Solenoid valve S6 is not seating properly.
Cutting units raise too fast or slow. Flow control(s) valve is(are) not adjusted properly.
Cutting units will not lower. Solenoid valve S3, S4, or S5 is not shifting.
Solenoid valve S6 is not shifting.
Solenoid valve S7 is shifted (See Chapter 5 - Electrical System).