D6T Track-Type Tractor Machine Systems including Specifications Caterpillar

Specifications

Illustration 1	g02367460

Removal Procedure

Start By:

1. Release Hydraulic System Pressure.

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Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed. Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death. Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

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Illustration 2	g01224736

1. Remove bolts (1) and guard (2).
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   Illustration 3	g01224737

2. Disconnect hose assemblies (3).
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   Illustration 4	g01260413

3. Attach a suitable lifting device to the tilt cylinder. The weight of tilt cylinder (7) is approximately 125 kg (275 lb). Remove bolt (9), retainer (8), and pin (7). Raise the tilt cylinder to a horizontal position.

4. Remove bolts (5), cap (4), and tilt cylinder (6).

Installation Procedure

1. Install tilt cylinder (6) in the reverse order of removal.

   1. Tighten bolts (5) to a torque of 700 ± 90 N·m (516 ± 66 lb ft).

2. After tilt cylinder (6) is installed.

   1. Check the hydraulic oil tank level. Refer to Operation and Maintenance Manual, "Hydraulic System Oil Level - Check" for the correct procedure.

   2. Cycle the cylinder three times, getting as close to the end of stroke without going to full stroke.

   3. Cycle the cylinder another time going to full stroke slowly. Do not hold in stall.

   4. After cycling the cylinder, check the hydraulic oil level again.

Disassembly and Assembly Information

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Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed. Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death. Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

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When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.

Illustration 5	g02367459

(1) Use Tooling (D) to remove and install bearing.

(2) Lubricate threads of bolt. Torque for bolt ... 2700 ± 275 N·m (1990 ± 203 lb ft)

(3) Lubricate the buffer seal with lubricant that is being sealed.

(4) Lubricate the U-cup seal with lubricant that is being sealed.

(5) Apply Tooling (A) to wiper seal groove prior to assembly. Lubricate wiper seal with lubricant that is being sealed.

(6) Torque for bolts ... 900 ± 100 N·m (664 ± 74 lb ft)