Lift Cylinder Removal And Installation - Toro Groundsmaster 300 Series Service Manual

Lift Cylinder Removal and Installation (Fig. 33)
1. Lower the cutting unit to the shop floor and turn the
engine off. Jack up the right front side of the traction unit
and support it with a jack stank. Remove the wheel nuts
and slide the wheel off of the mounting studs.
2. Remove the hoses from the lift cylinder and cap the
hoses to prevent contamination.
3. Remove the hair pin cotters and spring from the cotter
pin. Remove the mounting pins and slide the cylinder
from between the lift arm and the stationary mounting
bracket.
Figure 33
4. Install the new or rebuilt cylinder with the pins and
assure the cotter pin which secures the moveable end
of the cylinder is to the outside. Hook the chain tension
spring through the eye of the cotter pin.
5. Connect the hydraulic hoses from the control valve to
the cylinder.
6. Install the wheel and tighten the nuts to 45 - 55 ft-lb.
Remove the jack stank and lower the deck to the shop
floor.
7. Check the level of the hydraulic oil to be sure it is up
to the proper level. Start the engine and operate the lift
cylinder to remove air from the lines. Turn the engine off.
8. Check the level of the hydraulic oil again to be sure it
is up to the proper level.
9. NOTE: The hydraulic fitting elbow located at the back
of the lift cylinder has a special orifice size to determine
the actuation speed of the cylinder. Always use the
proper Toro replacement part for this fitting to prevent
damage to the hydraulic system.
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Groundsmaster 300 Series Page 5 - 41 Repairs