HOSE ASSEM. 3P4840 - Caterpillar

Installation 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 the fitting more than 360 degrees. Install the tube or hose hand tight in order to verify the orientation of the fitting. Tighten the fitting (2) to the torque that is shown in the correct chart for the fitting that is used. Tighten locknut (3) to the torque that is shown in the correct chart for the fitting that is used. Use a backup wrench, when the locknut is tightened. Note: Torque the fitting prior to the locknut.Note: If the fitting is not adjustable, the hex on the body replaces the locknut. To install this type of fitting, tighten the hex against the face of the mating part.Excessive tightening of the connectors can cause failure. Connectors that are under tightened can also cause failures. The following failures occur:
Excessive tightening can expand a loose ferrule into the nut. This will cause the ferrule to lock up in the nut and the nut will not function properly.
Excessive tightening can split the nut on the end of the tube or can split the ferrule.
Excessive tightening can gall or excessive tightening can strip the threads of the nut.Note: If the above conditions