105-7867 Hydraulic Cylinder Rebuild - Toro 22317 Service Manual

ALL UNITS/GENERAL
24. If the 4-spool valve uses an external pressure relief
valve: lubricate a new o-ring and install it on the
external pressure relief valve. Install the external
pressure relief valve in the back of the valve body
(Fig. 0142).
3/1-40
IMG-0517a
Fig. 0142

105-7867 Hydraulic Cylinder Rebuild

1. Clean away all dirt or other foreign substance
from openings, particularly at the head end of the
hydraulic cylinder.
2. Clean out any material in the locking slot (Fig. 0143).
3. Clamp the hydraulic cylinder barrel in a vise.
Note: If excessive wear due to side loads or binding
is a possibility, mark or note the piston and
its relationship to the rod and barrel. This
condition will usually show up as a highly
polished surface on the piston and head 90°
to pin rotation (Fig. 0144).
Toro Wheeled CUL Service Manual
IMG-0318a
Fig. 0143
IMG-0321a
Fig. 0144