LOCK 5H6199 - Caterpillar

Note: The tightening sequence of the threaded adapters that attaches a tube assembly or hose assembly to the machine is critical to the proper function of the machine. The sealing surfaces of the tube assembly or hose assembly should be secured squarely. The sealing surfaces of the tube assembly or hose assembly should be tightened to the serviced component (control valve, cylinder, hydraulic motor, etc.). Perform this procedure prior to the final tightening of any clamps or clips that are used in order to fasten the tube assembly or the hose assembly to the machine.Fittings have different connections. Fittings may have two different ends. Be sure to use the proper torque for the end of the fitting that is used. The following list contains some common types of fittings.Protective caps and plugs should not be removed until the connector is ready to be assembled. All sealing surfaces should be free of contamination and damage. If a connector is damaged before or after assembly, it should be replaced.
Straight Thread O-Ring (STOR)
O-Ring Face Seal (ORFS)
Tapered Pipe Thread (NPT and NPTF)
37 Degree Flare Fitting
45 Degree Flare Fitting
Inverted Flare Fitting
Hydraulic Four Bolt FlangeInstallation of Hydraulic Four Bolt Flange
Illustration 1 g02724217
Position the flanges parallel over the port.
Evenly install bolts hand-tight, keeping the gap between flanges at a minimum.
Put the hose in a position so that the hose does not contact the machine or with another hose.
Tighten using one of the assembly torque values for bolts, used in Illustration 1 for proper torque sequence of various flange fittings.
Start the engine.
Move the implement control levers to all of the positions.
Look at the hose during movement of the implement. Ensure that the hose is not in contact with the machine or with other hoses. Note: For hoses that cross an articulation hitch, check for contact during articulation. For hoses that connect to the steering system, check for contact during steering.
Shut off the engine.
If the hose contacts other hoses or the machine during the test, loosen the bolts and reposition the hose. Repeat steps 3 through 8 until there is no contact. Installation of Adjustable STOR Fittings
This type of fitting is used in many applications. One end of the fitting will be an adjustable STOR fitting. The other end will be different. Always use the same installation procedure for the STOR end. Adjustable STOR fittings can be positioned before tightening.
Illustration 2 g01848653
Elbow body assembly
(1) End that connects to the tube or hose
(2) Fitting body
(3) Locknut
(4) Backup washer
(5) O-ring seal
(6) End that is assembled to the mating part
Put locknut (3), backup washer (4) and O-ring seal (5) as far away from the threads as possible. Hold these components in this position. Turn the fitting into the mating part. Turn the fitting until backup washer (4) contacts the surface of the mating part. Note: Excessive use of the wrench will distort the washer. Distortion of the washer will prevent proper sealing.
Put the fitting assembly in the correct position. loosen fitting (2) until the correct assembly position is achieved. Do not loosen