SERVICE LEVEL MAINTENANCE
TM
41
85809
LEFT AND RIGHT HAND SPINNER WHEEL
HYDRAULIC MOTORS
The spinner hydraulic motors receive hydraulic power
from the manifold valve block port S1. Activation of
the solenoid valves S1 and PF1 are controlled at the
electronic control box ON/OFF switch. The controlled
flow from the speed control valve PF1 (at port S1) is
sent to the left hand motor port “A”. Flow leaves the left
hand motor through port “B” and enters the right hand
motor at port “B”. Flow out of the right hand motor joins
the case drain from the left hand motor and returns the
manifold valve block at port “SR”.
The direction of rotation is opposite from each other.
The right hand spinner wheel rotates counterclockwise,
the left hand spinner wheel rotates clockwise (as viewed
from the rear of the 1540 EC). The spinner wheels are a
direct drive from the hydraulic motors.
NOTE: Seal kits are available for the spinner motors.
Refer to the parts list section of this manual.
If the spinner motors fail to operate, check:
● Check electronic control box display and CAN
receiver for error codes.
● Spinner speed switch speed (%) set too low.
● Check battery. Electrical power supplied by battery
too low to operate S1 and PF1 solenoid valves.
● Non-operational electronic control box ON/OFF
switch. Check for electrical power at solenoid S1
and PF1 on manifold valve block.
● Non-operational S1 valve. Valve must close for
hydraulic flow to go to PF1 valve and to motors.
● Quick–disconnects not attached. Check one at
port “SR” on the manifold valve block and one on
the end of the hose connected to the left spinner
motor.
● Check for restricted operation with other
components. Check for a buildup of top dressing
material or obstructions caught under the spinner
wheels. Spinner wheels should not rub on the
directional shields.
● Check for loose hydraulic motors or out-of-position
hydraulic motors.
● Relief valve is bypassing all hydraulic power back
to the tank.
● Pump not operating.
● Damaged or non-functional motors.
● Mechanical problems with the motor and the
spinner wheel coupler. Check for sheared keys or
damaged coupling spider.
● Loose motor, check mounting screws and mounting
position.
Hydraulic flow leaving the spinner motors returns to
the manifold valve block, entering at port “SR”. Flow
is routed through the block, sent to the hydraulic filter
assembly, and returned to the reservoir.
CONVEYOR BELT MOTOR
The conveyor belt motor powers the conveyor belt. The
motor is mounted at the rear of the top dresser, on the
right side of the frame. ON/OFF operation of the motor is
controlled by the electronic control box ON/OFF switch.
Hydraulic power (speed) to the motor is controlled at
the manifold valve block by solenoid S2 and solenoid
PF2.
The motor rotates only in a clockwise direction (as
viewed from the left side of the machine) If the motor is
operating in reverse, check the possibility of reversed
connections the motor (ports A and B) or at the manifold
valve block (ports M1 and MR).
If the conveyor belt motor fails to operate, check the
following:
● Check electronic control box display and CAN
receiver for error codes.
● Conveyor belt speed switch speed (%) set too
low.
● Check battery. Electrical power supplied by battery
too low to operate S1, S2, PF1 and PF2 solenoid
valves.
● Non-operational electronic control box ON/OFF
switch. Check for electrical power at solenoid S2
and PF2 on manifold valve block.
● Non-operational S1 or S2 valve. Valves must close
for hydraulic flow to go to PF2 valve and to motor.
● Relief valve (RV) is bypassing all hydraulic power
back to the tank.
● Pump not operating.
● Damaged or non-functional motor.
● Mechanical problems, check for loose or out-of-line
motor, sheared keys on coupler or broken chain on
coupler (between motor and drive roller shaft).
Hydraulic flow leaving the conveyor motor returns to
the manifold valve block, entering at port “MR”. Flow
is routed through the block, sent to the hydraulic filter
assembly, and returned to the reservoir
