Checking The Gearbox Fluid; Replacing The Castor Wheel Fork Bushings - Toro 74805 Operator's Manual

3
1
4
3
1 4
Figure 70
1. Gearbox
2. Top plug

Checking the Gearbox Fluid

The gearbox fluid must be checked after every 100
operating hours. Check all three gearboxes.
1. Warm the fluid in gearbox. Run the mower deck for a
few minutes.
2. Tilt mower into the vertical position, refer to; Tilting the
Mower, page 18.
3. Remove plug on the side of the gearbox. The fluid level
must be up to side hole in gearbox (Fig. 70).
4. If needed, fill fluid into top hole until it runs out the
side hole in gearbox. It is full when it runs out the side
hole (Fig. 70).
Important Do not mix fluids. Do not overfill
gearboxes.
5. Reinstall the top and side plugs into gearbox using pipe
sealant (Fig. 70).
6. Fill gearbox with fluid.
7. Repeat for remaining gearboxes.
Replacing the Castor Wheel
Fork Bushings
The castor wheel forks are mounted in bushings pressed
into the top and bottom of the carrier frame castor tubes. To
check the bushings, move the castor forks back and forth
and side-to-side. If a castor fork is loose, the bushings are
worn and must be replaced.
2
2
3
m–4857
3. Side plug
4. Bottom plug
39
1. Tilt mower into the vertical position, refer to; Tilting the
Mower, page 18.
2. Remove the cap, thrust washer and 1/2 in. spacer from
the top of the castor wheel fork (Fig. 71).
3. Pull the castor wheel fork out of the mounting tube,
leaving the 1 in. spacer and thrust washers on the fork.
Remember the location of thrust washers on each fork
to ensure correct installation, and to maintain a level
deck.
1
2
3
4
5
Figure 71
1. Cap
2. Washer
3. Spacer, 13mm (1/2 in.)
(New)
4. Insert a pin punch into the castor hub and carefully
drive out the bushings (Fig. 72). Clean the inside of the
mounting tube.
5. Grease the inside and outside of the new bushings. Use
a hammer and flat plate to carefully drive the bushings
into the castor hub (Fig. 72).
6. Inspect the castor wheel fork for wear and replace if
necessary (Fig. 71).
7. Slide the castor wheel fork through the bushings in the
castor hub. Replace the 1/2 in. spacer and thrust washer
onto the fork and secure with the cap (Fig 71).
Important
The inside diameter of the bushings may
collapse slightly when installed. If the castor wheel fork
does not slide into the new bushings, ream both bushings to
an inside diameter of 28.6mm (1.126 in.).
2
m–4182
4. Spacer, 26mm (1 in.)
5. Caster Wheel Fork