Servicing The Castor Wheels And Tail Wheel Bearings; Checking The Tire Pressure; Servicing The Hydraulic System - Toro Z355 Z-Master Operator's Manual

Servicing the Castor Wheels
and Tail Wheel Bearings
The castor wheels and tail wheel rotate on a roller bearing
supported by a spanner bushing. If the bearing is kept well
lubricated, wear will be minimal. Failure to keep the
bearing well lubricated will cause rapid wear. A wobbly
castor wheel usually indicates a worn bearing.
1
3
4
7
6
Figure 83
1. Locknut
2. Wheel Bolt
3. Washer
4. Bushing
1. Remove the locknut and wheel bolt holding the castor
wheel to the castor fork (Fig. 83).
2. Remove the washer and bushing, then pull the spanner
bushing and roller bearing out of the wheel hub
(Fig. 83).
3. Remove the other bushing from the wheel hub and
clean any grease and dirt from the wheel hub (Fig. 83).
4. Inspect the roller bearing, bushings, spanner bushing
and inside of the wheel hub for wear. Replace any
defective or worn parts (Fig. 83).
5. To assemble, place one (1) bushing into the wheel hub.
Grease the roller bearing and spanner bushing and
slide them into the wheel hub. Place the second
bushing into the wheel hub (Fig. 83).
6. Install the castor wheel into the castor fork and secure
with the wheel bolt and locknut. Tighten the locknut
until the spanner bushing bottoms against the inside of
the castor forks (Fig. 83).
7. Grease the fitting on the castor wheel.
2
5
m–3283
4 3
5. Spanner Bushing
6. Roller Bearing
7. Grease fitting

Checking the Tire Pressure

Maintain the air pressure in the front and rear tires as
specified. Uneven tire pressure can cause uneven cut.
Check the pressure at the valve stem after every 50
operating hours or monthly, whichever occurs first
(Fig. 84 and 85). Check the tires when they are cold to get
the most accurate pressure reading.
Pressure: 83 kPa (12 psi) drive wheels
83 kPa (12 psi) tail wheel
345 kPa (45 psi) castor wheels
Figure 84
1. Drive Wheel and Tail
Wheel Valve Stem
Figure 85
1. Castor Wheel Valve Stem
Servicing the Hydraulic
System
Checking the Hydraulic Fluid
Check the hydraulic fluid level before engine is first
started and after every 8 operating hours.
®
Fluid Type: Mobil 1 15w–50 synthetic oil or equivalent
synthetic oil.
Important Use only oils specified. Other fluids could
cause system damage.
Total System Capacity: 2.8 l (96 oz.)
45
1
m–1872
1
m–3281