Toro 04356 Operator's Manual page 42

Problem
In the hydraulic system there is no #1
or reverse traction s eed. The #2 or reverse traction speed. The #2
speed is normal. (continued) ( )
There is no traction or it is slow in all
selections. l i
There is no traction or it is slow in all
selections and the reels are affected. l i d h l
The shift lever is binding.
All three cutting units raise and lower
too slowly.
The center (#1) cutting unit is dropping
too late or too early.
The front cutting units are too high or
too low when they are in the raised
(transport) position.
The cutting units lift too slowly. g y
The center cutting unit (#1) reel
operates in the raised position.
Possible Causes
3. The traction relief cartridge in the
#4 spool section is open.
4. A traction motor lacks efficiency.
There is fluid leaking past the
internal gears.
5. The hydraulic pump lacks
efficiency. There is fluid leaking
past the internal gears.
1. The brakes are dragging.
2. The o-ring seals around the
traction relief cartridge or inlet
sleeve in the #4 spool valve are
faulty. Fluid is leaking by to the
tank.
3. A traction motor(s) is worn or
weak.
4. The pump is excessively worn.
5. The traction relief in the #4 spool
valve is open.
1. The oil level in the reservoir is low.
ff d
2. The shift lever bracket is loose.
3. The rear camshaft is misadjusted.
4. The engine lacks power.
1. The #4 spool detent assembly is
lacking lubrication.
1. The lift cylinder and linkages are
binding due to lack of lubrication.
1. The flow control valve is
misadjusted.
1. The front lift cylinders are
misadjusted.
1. The rear camshaft is misadjusted.
2. The #1 spool travel is restricted by
the mow/lift switch.
3. The lift check poppet in the #1
spool section is stuck partially
closed.
1. The rear camshaft is misadjusted.
The #3 spool is too far out of the
body.
2. The brazed tube assembly on the
#3 spool section is restricted.
3. The valve return port between the
#3 spool section and the right-hand
cover is restricted.
3. Remove the relief cartridge. Repair
or replace it.
4. Test to identify the faulty motor.
Repair or replace the motor.
5. Test to verify a diagnosis. Repair or
replace the pump.
1. Determine the cause and repair it.
2. Remove the relief and inlet sleeve.
Replace the o-rings.
3. Test to verify. Repair or replace the
motor(s).
4. Test to verify. Repair or replace the
pump.
5. Remove, repair, or replace it.
1. Add oil to the proper level.
2. Adjust and tighten the shift lever.
3. Adjust the camshaft.
4. Repair as necessary.
1. Remove the valve bank.
Disassemble the detent assembly
and repair it.
1. Lubricate more frequently.
1. Adjust the valve.
1. Adjust the cylinders.
1. Adjust the camshaft.
2. Adjust the switch.
3. Remove the lift check and repair or
replace it.
1. Adjusted the camshaft.
2. Remove the restriction.
3. Disassembly the cover and remove
the restriction.
42
Corrective Action