Toro Groundsmaster 360 Service Manual page 212

Disassembling the Steering Cylinder (continued)
Inspecting the Steering Cylinder
Assembling the Steering Cylinder
Hydraulic System: Service and Repairs
2. Mount the steering cylinder securely in a vise by clamping on the barrel
clevis. Use a vise equipped with soft jaws.
3. Use a spanner wrench to loosen and remove the external collars from both
ends of the barrel.
4. Use a twisting and pulling motion to carefully extract the rear head from
the barrel and rear rod.
5. Hold the end of the front rod and use a twisting and pulling motion to carefully
extract the front rod, front head, piston, and rear rod assembly from the barrel.
6. Remove the cylinder barrel from the vise.
When removing the roll pin from the front and rear rods, ensure that
the rod surfaces are not damaged.
7. Remove and discard the roll pin (item 6 in
rod to the rear rod. Then, remove the rear rod, piston assembly, and front
head from the front rod.
8. Remove and discard the seals, O-rings, and wear ring from the piston and
heads.
Use eye protection such as goggles when using compressed air.
1. Wash all the cylinder components in clean solvent and dry them with
compressed air.
2. Inspect the internal surface of the barrel for deep scratches, out-of-roundness,
and bending.
3. Inspect the head, rods, and piston for excessive pitting, scoring, and wear.
4. Check the re-phasing valve in the piston that exists to allow synchronization
of the front and rear steering cylinders. The poppet valves should not be
stuck in piston. If the valves are stuck or damaged, replace the steering
cylinder because the piston is not available separately.
5. Replace the steering cylinder if the internal components are worn or
damaged.
1. Use a new seal kit and replace all the seals, O-rings, and wear ring to the
piston and heads. Apply clean hydraulic fluid to all the seal kit components
before you install them.
Note: Do not damage the head seals during installation.
2. Install the front head (item 15 in
rod (item 12).
IMPORTANT
Figure
CAUTION
Figure 148) with new seals onto the front
Page 4–154
148) that secures the front
Groundsmaster 360
16225SL Rev C