1Removal and Installation of Center Joint

1 Removal and Installation of Center Joint

Cautions

•Be sure to stop the engine before beginning work. •Be sure to inspect the wire rope and other suspended items before beginning work. •Do not stand or pass under the suspended load (center joint).

•Wrench (17 mm, 19 mm, 27 mm, 36 mm) •Hexagon wrench (5 mm) •Box wrench (19 mm) •Specialized jig •Vacuum pump (vacuum pump power supply) •Extension cord •Marking pen •Caps •Plugs •Wire rope (with the required breaking load) •Crane (that meets the lifting capacity) •Crossties •Rags •Cleaning fluid

Items to prepare

[1] Use a 5-mm hexagon wrench to remove the 4 installation bolts (1), and then remove the air breather (2) on the hydraulic oil tank.

[2] Attach the specialized jig (1) to the area where the air breather was removed, and set the vacuum pump (2). 1

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[3] Use a 19-mm box wrench to remove the 8 installation bolts (1), and then remove the lower under cover (2).

[4] Put a waste oil can underneath the center joint.

[5] Use a wrench [19 mm (1), 27 mm (2)] to remove the hoses. •Mark the center joint and hoses so that they can be connected correctly at the time of assembly. •Attach caps and plugs to the center joint and hoses to prevent entry of water, dust, or dirt. •Clean the center joint and hoses by spraying with a parts cleaner to prevent scratches and prevent dirt from accumulating on the connectors. 1

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[6] Use a wrench [36 mm (1), 27 mm (2)] to remove the hoses. •Attach caps and plugs to the center joint and hoses to prevent entry of water, dust, or dirt. •Clean the center joint and hoses by spraying with a parts cleaner to prevent scratches and prevent dirt from accumulating on the connectors.

[7] Use a 19-mm wrench to remove the 2 installation bolts (1), and then remove the center joint bracket (2).

[8] Use a 36-mm wrench (1) to remove the 4 hoses. •Mark the hoses so that they can be connected correctly at the time of assembly. •Attach caps and plugs to the hoses to prevent entry of water, dust, or dirt. •Clean the hoses by spraying with a parts cleaner to prevent scratches and prevent dirt from accumulating on the connectors.

[9] Wrap a wire rope around the center joint and secure it with a crane so that the center joint does not fall during removal and installation operations. 1

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[10]Use a 17-mm wrench to remove the 4 installation bolts (1) on the center joint.

[11]Use the wire rope and crane to suspend the center joint. [12]Thoroughly check that the location is safe before lowering the center joint on a pair of crossties. •Apply Locktite to the center joint when assembling. •During a test run, check that there are no oil leaks, and then install the lower under cover. 1