Toro 23515 Operator's Manual page 27

E. Support the transmission, remove and retain
its mounting hardware, and carefully lower the
transmission to the ground.
6. Carefully clean the area around the expansion tank
and oil-fill port. It is important that no dirt or
contamination enter the hydraulic system.
7. Remove and retain the oil-fill port fitting and position
the transmission so the oil will drain completely out
of the housing.
8. When all the oil has drained from the transmission,
remove and retain the #10-32 x 1/2 inch self-tapping
screw and ratchet fastener holding the expansion tank
to the housing.
9. Remove the expansion tank and drain the oil.
Note: Do not remove the vent cap from the tank.
Note: Do not remove the tank hose or O-ring unless
a replacement is needed.
10. Inspect the belt, pulleys, sprockets, and bearings;
replace as required.
11. Install the previously removed expansion tank by first
inserting the hose into the tank. Place the tank opening
over the O-ring and push down to ensure a proper seal.
Install the #10–32 x 1/2 inch self tapping screw and
torque it to 2.8 N-m (25 in-lb).
12. Fill the transmission at the oil-fill port until the oil level
is 13–32 mm (1/2–1 1/4 inches) below the top of the
fill port.
Toro Premium Hydro Oil is recommended. Mobil 1
15W50 is an acceptable alternative.
13. Install the previously removed oil-fill port fitting.
14. Install the previously removed transmission.
A. With the transmission belt on the engine pulley
and the idler pulley, loosely install the transmission
using the previously removed mounting hardware.
B. Install the transmission belt on the transmission
pulley.
C. Install the drive chains onto the idler and
transmission sprockets.
D. Install the chain on the front axle sprocket.
Ensure that the front axle sprocket is aligned with
the sprocket on the transmission.
E. Tighten the 7 transmission mounting bolts.
F. Tension the transmission belt; refer to Checking
the Hydrostatic Drive Belt (page 25).
G. Tension the tine drive chains; refer to Adjusting
the Tension of Tine Drive Chains (page 24).
H. Connect the self-propel drive bail cable.
15. Carefully remove the jackstands, lower the machine to
the ground, and remove the overhead hoist hooks.
16. Raise and lock the handle into the operating position.
17. Check the gap between the handle and the bail. If the
handle contacts the bail or if there is more than a 3mm
(1/8 inch) gap, refer to Adjusting the Self-Propel Drive
(page 26).
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