2019 27 D4OPTRS
Gutter broom motor stalls
easily
Replace O-ring; check
sequence valve block bore
for burrs or rough spots.
Cartridge valve poppet not
seating properly
Clean foreign material
from valve seat. Replace
cartridge if damaged seat/
poppet exists.
Note: Gutter broom will
rotate backward while switch
is in “up” position if either
or both of the above two
conditions exist
Gutter broom torque motor
defective
Rebuild or replace
(See SERVICE AND
MAINTENANCE Section).
Hydraulic pump pressure
low
See Hydraulic Section.
Gutter broom raises but
drifts back down
Cylinder by-passing
internally
Re-pack or replace cylinder.
Electric lock valve defective Replace lock valve.
Gutter broom will not lower
but motor turns
No electrical power to lock
valve coil
Check electrical circuit for
12V to lock valve coil repair
as required.
Lock valve coil not grounded Check ground wire, check
connector ground and
common power.
Defective coil Check for 7.0 OHMS
resistance on RX1 scale.
Replace a required. Check
coil cold.
Lock valve stuck closed Replace
Gutter broom drops down
but will not extend
Sequence valve improperly
adjusted
Gutter broom sequence
valve suggested adjustment
is: Steel Vertical Digger
bristles - 2-1/2 turns in. Poly
Vertical Digger and Poly
Wafer bristles - 2 turns in.
Refer to SERVICE AND
MAINTENANCE in this
manual section for more
detail.
Spring improperly adjusted Tighten eye bolt adjustment
(See SERVICE AND
MAINTENANCE Section).
PROBLEM CAUSE SOLUTION
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