Hydraulic System Test Ports; Replacing The Fuel Filter - Toro 03422 Operator's Manual

1. Park the machine on a level surface, lower the cutting
units, set the parking brake, and turn the engine off.
2. If only the filter is to be changed, remove the reservoir
cap and insert the reservoir plug (Fig. 50) to block the
outlet. This will retain most of the fluid in the reservoir
when the filter is removed.
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Figure 50
1. Reservoir plug
3. Clean the area around the hydraulic oil filter (Fig. 51).
Remove the filter from the bottom of the filter housing
and allow the oil to flow into a drain pan. Use a bottom
type filter wrench. Dispose of the oil filter properly.
Figure 51
1. Hydraulic oil filter
4. Apply a film of oil on the filter gasket. Install the filter
by hand until the gasket contacts the mounting head;
then tighten the filter an additional 3/4 turn.
5. Fill the reservoir to the proper level; refer to Checking
the Hydraulic System Fluid, page 22.
6. Place all controls in neutral or in the disengaged
position and start the engine. Run the engine at the
lowest possible RPM to purge the system of air.
7. Run the engine until the lift cylinders extend and retract
and forward and reverse wheel motion is achieved.
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2. Reservoir outlet
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37
8. Stop the engine and check the oil level in the reservoir.
Add oil if necessary.
9. Check all connections for leaks.

Hydraulic System Test Ports

The test ports are used to test pressure in the hydraulic
circuits. Contact your local Toro distributor for assistance.
Test Port #1 (Fig. 52) is used to forward traction pressure.
Test Port #2 (Fig. 52) is used to measure reverse traction
pressure.
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Figure 52
1. Test port #1
Test Port #3 (Fig. 53) is used to measure reel circuit
pressure.
Figure 53
1. Test port #3

Replacing the Fuel Filter

Inspect the fuel filter bowl daily for water or other
contaminants. If water or other contaminants are present,
they must be removed before commencing operation.
1. Close the fuel shut-off above the filter (Fig. 54).
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2. Test port #2
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