Usage:
A. Disconnecting Hoses And Lines
1. Before disassembling the steer pivot, disconnect the hoses and other equipment that run between the front and rear frames. Perform the following steps to disconnect these items.
2. Park the machine on a hard, level surface. Set the emergency/parking brake.
3. Block both drums to prevent the machine from rolling.
4. Disconnect and tag two electrical wires from the water pump.
5. Disconnect, plug, and tag the two water lines leading to the rear spray bar from the water tee.
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Make sure hydraulic pressure is reduced to zero before opening any hydraulic lines. Failure to do so could result in personal injury from escaping fluid. |
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6. Disconnect case drain hose from front vibratory motor. Plug the hose and cap the fitting on the motor.
7. Disconnect and tag two hydraulic hoses where they join the hydraulic tubes leading to the front vibratory motor. Plug the hoses and cap the tube fittings.
8. Disconnect and tag two hydraulic hoses where they join the hydraulic tubes leading to the front propel motor. Plug the hoses and cap the tube fittings.
9. Disconnect the steer cylinder rod end from the front frame.
B. Disassembling The Steer Pivot
1. Drain water tank to make front frame easier to handle.
2. Place a jack under the rear frame, and a hardwood block (or other suitable material) under the front frame, to support the machine.
- a. Rear frame to articulation link (A).
- b. Front frame to rear frame (B).
- c. Front frame to articulation link (C).
- b. Front frame to rear frame (B).
3. The steer and oscillating pivot consists of three connecting points as follows:
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The machine must have both drums blocked, and be properly supported as described in step 2. Otherwise the front or rear frame could fall, causing serious injury or death. |
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4. Disassemble the rear frame to articulation link connecting point as follows:
a. Remove the bolt and washer securing the pivot pin in the connecting point.
b. Remove the two bolts and washers securing the pivot pin retainer and the pivot pin spacer to the rear frame.
c. Raise or lower the jack slightly to permit removal of the pivot pin.
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Move the hydraulic hose cluster out of the way when removing the pivot pins. |
d. Push the pivot pin out of the connecting point.
e. Inspect pivot pin for wear.
5. Place a hardwood block (or other suitable material) under the rear frame to adequately support the machine. Lower jack and remove from rear frame.
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Check to make sure both drums are securely blocked and that the machine is properly supported by the hardwood blocks. Failure to do this could cause the machine to fall, causing serious injury or death. |
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6. Disassemble the front frame to rear frame connecting point as follows:
a. Remove the bolt and washer securing the pivot pin in the connecting point.
b. Remove the two bolts and washers securing the pivot pin retainer to the rear frame.
c. Move hydraulic hose cluster out of the way. Push pivot pin out of the connecting point.
d. Inspect pivot pin for wear.
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The front frame and drum assembly weighs approximately 908 kg (2000 lb.). Avoid possible injury or damage. Do not separate the pivot before securely attaching a proper lifting device and adequately supporting related parts or components. |
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When separating the pivot, feed the hydraulic hose cluster through the front frame carefully to avoid damaging hoses or fittings. |
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Before moving the front drum and frame assembly in the next step, remove the caps from the hydraulic tubes leading to the front propel motor. Recap the tubes after blocking the front drum and frame. |
7. Using a forklift, hoist, or other lifting device of required capacity, unblock the front drum and frame assembly and carefully roll away to separate pivot.
8. Reblock the front drum and frame. Make sure frame is adequately supported.
9. Disassemble the front frame to articulation link connecting point as follows:
a. Remove the bolt and washer securing the pivot pin in the connecting point.
b. Remove the two bolts and washers securing the pivot pin retainer and the pivot pin spacer to the front drum.
c. Push the pivot pin out of the connecting point.
d. Inspect pivot pin for wear.
e. Remove the articulation link from the front frame.
10. Remove the two bearing spacers from the rear frame, and the one bearing spacer from the front frame, if not removed with the pivot pins.
C. Steer Pivot Bushing Replacement
1. Inspect bushings in articulation link for excessive wear or damage. Clearance should not exceed 0.76 mm (0.030 in.) when checked with a feeler gauge.
2. Inspect bushing in front frame for excessive wear or damage. Clearance should not exceed 0.76 mm (0.030 in.) when checked with a feeler gauge.
3. If bushings appear damaged or are worn beyond a 0.76 mm (0.030 in.) tolerance, replace as follows:
a. Remove bearing retainer.
b. Remove bushing from articulation link or front frame using a press or a hammer and suitable driver.
c. Before installing new bushings, run grease through zerks to clean passages. Be sure all parts are clean and free from foreign matter before reassembling.
d. Using a hammer and a piece of wood to avoid damaging bushings, carefully drive the new bushings into the articulation link or front frame.
e. Reinstall bearing retainer.
4. Examine bushings and bolts in steer cylinder ears. Tolerance may exceed 0.76 mm (0.030 in.) but bushings and bolts should be replaced if visible signs of wear or damage are present.