Adjusting The Caster Pivot Bearing; Servicing The Hydraulic System - Toro 74225 Operator's Manual

5. If more than two threads are showing remove nut and
install washer between hub and nut (Fig. 49).
6. Torque the slotted nut to 125 ft–lb. (170 N m)
(Fig. 49).
7. Tighten nut until the next set of slots line up with the
hole in the shaft (Fig. 49).
8. Replace cotter pin.
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2
Figure 49
1. Slotted Nut
2. Two threads or less
showing
Adjusting the Caster Pivot
Bearing
Check after every 500 operating hours or at storage, which
ever comes first.
1. Stop the engine, set the parking brake, remove the key
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove dust cap from caster and tighten lock nut
(Fig. 50).
3. Tighten until spring washers are flat and then back off
a 1/4 turn to properly set the pre–load on the bearings
(Fig. 50).
Important Make sure spring washers are installed
correctly as shown in figure 50.
4. Install the dust cap (Fig. 50).
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3
m–4638
3. Hole in threaded rod
4. Washer (if needed)
37
Figure 50
1. Spring Washers
2. Lock Nut
Servicing the Hydraulic
System
Checking the Hydraulic Fluid
Check the hydraulic fluid level before engine is first
started.
Check the hydraulic fluid level after first 8 operating
hours.
Check the hydraulic fluid level after every 25 operating
hours.
Fluid Type: Mobil 1 15W-50 synthetic motor oil or
equivalent synthetic oil.
Important
Use oil specified or equivalent. Other
fluids could cause system damage.
Hydraulic System Oil Capacity: 67 oz. (2.0 l)
Note: There are two ways of checking the hydraulic oil.
One is when the oil is warm and one is when the oil is
cold. The baffle inside the tank has two levels depending
if the oil is warm or cold.
1. Position machine on a level surface and set the parking
brake.
2. Clean area around filler neck of hydraulic tank
(Fig. 51).
3. Remove cap from filler neck. Look inside to check if
there is fluid in the reservoir. (Fig. 51).
4. If there is no fluid, add fluid to the reservoir until it
reaches the cold level of the baffle.
5. Run the machine at low idle for 15 minutes to allow
any air to purge out of the system and warm fluid.
Refer to Starting and Stopping the Engine on page 19.
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2
1
M–4640
3. Dust Cap