Installing The Hydraulic Fittings - Toro ProLine H800 Service Manual

Installing the Hydraulic Fittings

Installing the Non-Adjustable Fittings
Hydraulic System: General Information
The hydraulic fittings used in this machine have BSPP (British
Standard Parallel Pipe) threads for the hose connections, and both
the SAE and BSPP threads for the component connections. The
hydraulic fittings used on this machine have ORFS (O-Ring Face
Seal) threads for the hose connections, and both SAE and BSPP
threads for the component connections. Pay close attention to the
fitting thread type and the type of seal used when replacing the
hydraulic tank fittings and seals, or component damage and leakage
may occur.
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1. Fitting
1. Ensure that all the threads, the sealing surfaces of fitting, and the component
port are free of burrs, nicks, scratches, or unwanted material.
2. To help prevent a hydraulic leak, replace the O-ring when you open the
connection.
3. Lightly lubricate the O-ring with clean hydraulic fluid. Ensure that the threads
of the fitting are clean with no lubricant applied.
Before tightening the fitting, determine the material used for the port
the fitting is being installed in. Installing a fitting into an aluminum
port requires reducing the installation torque.
4. Install the fitting into the port, then use a torque wrench and socket to tighten
the fitting to the recommended torque value within the specified range of
torque values; refer to the
Note: It may be necessary to use a drive-adapter wrench (e.g., crowfoot
wrench) to install a hydraulic fitting; refer to
When Using a Drive-Adapter Wrench (page
5. If a torque wrench is not available or if space at the port prevents the use of
a torque wrench, use the Flats From Finger Tight (FFFT) procedure given
below:
A. Install the fitting into the port and tighten the fitting down full length until
finger-tight.
IMPORTANT
Figure 26
2. O-ring or dowty seal
IMPORTANT
Fitting Installation Torque Table (page
Page 5–10
5–12).
Calculating the Torque Values
2–9).
ProLine H800
19241SL Rev A