Service Manual

Hydraulic
System
Reelmaster 5500-D Hydraulic System (Rev. C)Page 4 - 25
Problem
Possible Causes
Front (Rear) reels will not turn in ei-
ther direction.
Solenoid valve MS1 (MS2) is not shifting.
Relief valve R1 (R2) is by-passing.
Electrical problem exists (see Chapter 5 - Electrical System).
Front (Rear) reels turn too slowly. Relief valve R1 (R2) is by-passing.
Mow/Backlap valve MD1 (MD2) is partially rotated.
Reel speed valve (FC1) incorrectly adjusted.
Reel motor has internal leakage (by-passing oil).
Gear pump section P1 (P2) is inefficient.
Front (Rear) reels turn only in one
direction.
Mow/Backlap valve MD1 (MD2) is not redirecting oil.
Front (Rear) reels stop or won’t start
- during backlap only.
Reel motor has internal leakage (by-passing oil).
Cutting units not completely lowered.
Load too high for motor.
Electrical problem exists (see Chapter 5 - Electrical System).
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. Engine RPM is too low.
Solenoid valve SV2 is not shifting.
Solenoid valve SV1 is not shifting.
Solenoid valve SV3, SV4, or SV5 is not shifting.
Relief valve R3 is by-passing.
Lift cylinder(s) has(have) internal leakage.
Lift arm pivots are binding.
Gear pump section P3 is inefficient.
Electrical problem exists (see Chapter 5 - Electrical System).
Steering valve has internal leakage.
Cutting units raise, but will not stay
up.
Solenoid valve(s) SV3, SV4, or SV5 has(have) internal leakage.
Lift cylinder(s) has(have) internal leakage.
Cutting units raise too fast or slow. Flow control(s) valve is(are) not adjusted properly.
Cutting units will not lower. Solenoid valve SV3, SV4, or SV5 is not shifting.
Solenoid valve SV1 is not shifting.
Flow control(s) valve is(are) not adjusted properly (closed).
Solenoid valve SV2 is shifted (See Chapter 5 - Electrical System).
Relief valve R3 is by-passing.