Toro 3100 General Information, Hydraulic Hoses, Hydraulic Fitting Installation, Ring Face Seal

General Information

Hydraulic Hoses

Hydraulic hoses are subject to extreme conditions such as, pressure differentials during operation and exposure to weather, sun, chemicals, very warm storage condi- tions or mishandling during operation or maintenance. These conditions can cause damage or premature de- terioration. Some hoses, such as reel motor hoses, are more susceptible to these conditions than others. In- spect the hoses frequently for signs of deterioration or damage. To prevent possible problems it is recom- mended that hoses are replaced periodically, regardless of condition.

When replacing a hydraulic hose, be sure that the hose is straight (not twisted) before tightening the fittings. This can be done by observing the imprint on the hose. Use two wrenches; one to hold the hose straight and one to tighten the hose swivel nut onto the fitting.

WARNING

Before disconnecting or performing any work on the hydraulic system, all pressure in the system must be relieved by stopping the en- gine and lowering the cutting units to the ground.

Keep body and hands away from pin hole leaks or nozzles that eject hydraulic fluid un- der high pressure. Use paper or cardboard, not hands, to search for leaks. Hydraulic fluid escaping under pressure can have sufficient force to penetrate the skin and do serious damage. If fluid is injected into the skin, it must be surgically removed within a few hours by a doctor familiar with this type of injury or gangrene may result.

Hydraulic Fitting Installation

O-Ring Face Seal (Fig. 1, 2)

1.Make sure both threads and sealing surfaces are free of burrs, nicks, scratches, or any foreign material.

2.Make sure the O-ring is installed and properly seated in the groove. It is recommended that the O-ring be replaced any time the connection is opened.

3.Lubricate the O-ring with a light coating of oil.

4.Put the tube and nut squarely into position on the face seal end of the fitting and tighten the nut until finger tight.

5.Mark the nut and fitting body. Hold the body with a wrench. Use another wrench to tighten the nut to the correct flats from finger tight (F.F.F.T.). The markings on the nut and fitting body will verify that the connection has been tightened.

Size			F.F.F.T.
4	(1/4 in. nominal hose or tubing)		.75	± .25
6	(3/8 in.)		.75	± .25
8	(1/2 in.)		.75	± .25
10		(5/8 in.)	1.00	± .25
12		(3/4 in.)	.75	± .25
16		(1 in.)	.75	± .25

NutBody

Sleeve

Seal

Figure 1

Mark Nut	Final
	Position	Initial
and Body
		Position
	Extend Line
Finger Tight	After Proper Tightening

Figure 2

Greensmaster® 3100 Page 4 - 3 General Information