Hydraulic Hoses - Toro Sand Pro 3040 Service Manual

Hydraulic Hoses

Hydraulic System: General Information
The hydraulic hoses are subject to extreme conditions such as pressure
differentials during operation and exposure to weather, sun, chemicals, very
warm storage conditions, in addition to mishandling during operation and
maintenance. These conditions can cause damage to the hose or deterioration
to the hose material. Some hoses are more susceptible to these conditions
than others. Examine all of the hydraulic hoses of the machine frequently and
replace or repair them if necessary. Hoses that move during normal machine
operation should be replaced every 2 years. Check hydraulic hoses for the
following signs of deterioration or damage:
•
Hydraulic hoses should not be hard, cracked, cut, abraded, charred, leaking,
or otherwise damaged.
•
Hydraulic hoses should not be kinked, crushed, flattened, or twisted.
•
Hydraulic hose covers should not be blistered, soft, degraded, or loose.
•
Hydraulic hose fittings should not be cracked, damaged, or badly corroded.
Release all pressure in the hydraulic system before performing any
work on the system.
• Keep your body and hands away from pin-hole leaks or nozzles
that eject hydraulic fluid under high pressure.
• Do not use your hands to search for leaks; use a piece of paper
or cardboard.
• Hydraulic fluid escaping under pressure can have sufficient force
to penetrate the skin and cause serious injury.
• If hydraulic fluid is injected into your skin, the fluid damage to
your body must be surgically removed within a few hours by a
doctor familiar with this form of injury or gangrene may result.
When you replace a hydraulic hose, ensure that the hose is straight (not twisted)
before you tighten the fittings. Observe the imprint (layline) on the hose to do
this. Using two wrenches, hold the hose straight with 1 wrench and tighten the
hose swivel nut onto the fitting with the other wrench; refer to
Hoses and Tubes (O-Ring Face Seal Fitting) (page
Note: If the hose has an elbow at one end, tighten the swivel nut on the elbow
end before you tighten the nut on the straight end of the hose.
For more hydraulic hose information, refer to the Toro Basics Series Training
Book Hydraulic Hose Servicing (Part No. 94813SL).
WARNING
Page 5–6
Installing Hydraulic
5–7).
Sand Pro ® 3040 and 5040
20251SL Rev A