General Information; Hydraulic Hoses; Hydraulic Fitting And Hose Installation - Toro GreensPro 1200 Service Manual

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
conditions, or mishandling
maintenance. These conditions can cause damage or
premature deterioration. Some hoses are more
susceptible to these conditions than others. Inspect the
hoses frequently for signs of deterioration or damage.
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: hold the hose straight with one and
tighten the hose swivel nut onto the fitting with the
other.
For additional hydraulic hose information, refer to Toro
service training book, Hydraulic Hose Servicing (Part
Number 94813SL).

Hydraulic Fitting and Hose Installation

IMPORTANT: The hydraulic fittings and hoses used
on the GreensPro 1200 have both SAE and BSP
threads. If fittings or hoses are replaced, make sure
that the replacement has the correct type of
threads, or component damage and leakage will
occur.
1. Make sure all threads and sealing surfaces of
hydraulic fitting, component port, and hydraulic hose
are free of damage or foreign material.
2. As a preventative measure against leakage, it is
recommended that fitting seals (if equipped) be
replaced anytime the connection is opened. Lightly
lubricate the seal with clean hydraulic oil. Make sure
the seal is installed and properly seated on the fitting.
3. The fitting threads should be clean with no lubricant
applied.
4. Install the hydraulic fitting into the component port.
Then, use a torque wrench and socket to tighten the
fitting to the recommended installation torque that is
listed in the assembly procedures in this Service
Manual.
GreensPro 1200
during operation or
Page 4 - 5
CAUTION
Before disconnecting or performing any work
on hydraulic system, relieve all pressure in
system. Stop engine and depress each of the
motion pedals fully
pressure in the traction circuit.
Keep body and hands away from pin hole leaks
or nozzles that eject hydraulic fluid under 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 cause serious injury. 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.
Gangrene may result from such an injury.
5. Thread the hydraulic hose swivel nut onto the fitting
by hand. While holding the hose with a wrench to
prevent it from rotating, use a torque wrench to tighten
the hose swivel nut to the recommended installation
torque that is listed in the assembly procedures in this
Service Manual.
IMPORTANT: This tightening process may require
the use of an offset wrench (e.g., crowfoot wrench).
Use of an offset wrench will affect torque wrench
calibration due to the effective length change of the
torque wrench. Tightening torque when using a
torque wrench with an offset wrench will be lower
than the recommended installation torque. Refer to
Using a Torque Wrench with an Offset Wrench.
to relieve hydraulic
Hydraulic System