Installation of 359-3176 Pivot Bearing and the 433-6434 Plate Assembly on Certain Vibratory Asphalt Compactors{7253} Caterpillar

Vibratory Asphalt Compactor:

CB44B (S/N: JXL1-UP)

CB54B (S/N: RJN1-UP)

Introduction

This Special Instruction will provide information on the installation of 359-3176 Pivot Bearing and the 433-6434 Plate Assembly on certain Vibratory Asphalt Compactors.

Do not perform any procedure in this publication or order any parts until you understand the information that is contained in this publication

Safety Section

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DO NOT OPERATE OR WORK ON THIS MACHINE UNLESS YOU HAVE READ AND UNDERSTAND THE INSTRUCTIONS AND WARNINGS IN THE OPERATION AND MAINTENANCE MANUALS. FAILURE TO FOLLOW THE INSTRUCTIONS OR HEED THE WARNINGS COULD RESULT IN INJURY OR DEATH. CONTACT ANY CATERPILLAR DEALER FOR REPLACEMENT MANUALS. PROPER CARE IS YOUR RESPONSIBILITY.

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Shut off engine and remove key before performing maintenance or repair work. Failure to do so may result in personal injury due to inadvertant machine operation. Do not start the engine or move any of the controls if there is a "Do Not Operate" or similar warning tag attached to the start switch or controls.

Required Parts

Seat Bearing Rework Procedure

Illustration 1	g03349774
(A) Right side cover (B) Left side cover (C) Display from left side

1. Shut disconnect switch off before performing this rework.

2. Remove left side (B) and right side (A) console covers.

   1. Remove display from right side (C) first.

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Illustration 2	g03349783
(D) Harness

3. Disconnect harness (D) from all components - mark locations of connectors. Tie straps have locations marked by electrical tape on the harness (D). Take harness (D) loose all the way to the back of the seat box.

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Illustration 3	g03349791
(E) Knobs (F) Covers

4. Remove knobs (E) on slide rotate handles, then remove covers (F) from seat box

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Illustration 4	g03349976

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Illustration 5	g03349988

5. Remove seat assembly by removing the four bolts that are located in the seat box. Bolts are bottom up in the seat box.

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Illustration 6	g03350194
(a) Step 6.a (b) Step 6.b (c) Step 6.d (d) Step 6.c

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Illustration 7	g03350071

6. Remove slide and rotate locks.

   1. Remove cable from slide handle and remove link from handle to lever.

      Note: Mark nuts on slide cable to ease in locating during assembly.

   2. Remove stauff clamp from harness where the clamp goes through the bearing.

   3. Remove rotate lock and stauff clamps.

   4. Remove two bolts from bracket in the front of box

7. Disconnect harness from sensors and cut tie straps for harness in the seat box.

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Illustration 8	g03350215
(G) Proximity sensor (J) Upper jam nut

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Illustration 9	g03350220
(H) Bottom jam nuts

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Illustration 10	g03350238

8. Remove proximity sensors (G). Remove the bottom two jam nuts (H) first using a wrench, remove entirely from the sensor (G) and remove sensor (G). Put both jam nuts (H) back on the sensor and tighten the nuts together. Use two wrenches one on the bottom two jam nuts (H) and one on the lower of the upper two jam nuts (J). Break the lower of the two upper jam nuts (J) loose and run down to the bottom two jam nuts (H) and tighten. Break the final jam nut loose and work back and forth until the nut moves up down the sensor threads. Clean Loctite from the threads this action will aide in assembly.

   Note: If your machine does not have a 360 degree rotating operator station there will not be proximity sensors and these steps can be ignored.

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Illustration 11	g03353030
(K) Hold down plate (L) Seat box

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Illustration 12	g03350262
(M) Center tab

9. Take note of the position of the half moon plate. The center tab (M) should line up with where the slide lock cable runs through the bearing, this position will need to be in the same location when assembling. Remove hold down plate (K) and then pull the seat box (L) off trolley. As, you pull the seat box (L) off the trolley you will need to feed the harness and slide lock cable through the bearing.

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Illustration 13	g03350301
(N) Rotation lock (P) Rotation stop

10. Under the seat box (L) is the rotation lock (N) and rotation stop (P), remove this component from the old seat base and install on the new seat base (2). Remove and discard the seat bearing and the seat box (L) .

11. Install the new bearing (1) in the new seat box (2). Torque bearing in a star pattern to 28 N·m (21 lb ft). Check that the ground stud in the new seat box is free of paint.

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Illustration 14	g03350306

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Illustration 15	g03350308

12. Feed harness back through the bearing bolted into the seat box. Place seat box on trolley and install hold down plate and sensor target plate. The sensor target plate has three mounting holes that all require two washers underneath and 1 on top to allow the bearing to rotate properly. Ensure that this component is installed in the correct position with the center tab (M) lining up with the slide lock cable. Torque all bolts for the hold down plate to 28 N·m (21 lb ft).

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Illustration 16	g03350319

13. Install proximity sensors with a gap of 4 ± 1.5 mm (0.16 ± 0.06 inch) between sensor and half moon plate. Use a 4 mm (0.16 inch) feeler gauge (similar to what is shown in the picture) to ensure that proper the gap is attained. Loctite 492 is used on the jam nuts and torque to 25 N·m (18 lb ft).

    Note: Set the 4 ± 1.5 mm (0.16 ± 0.06 inch) gap using one jam nut on the top and one on the bottom then apply Loctite 492 to the threads of the sensor when tightening the second jam nut on both the top and the bottom.

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Illustration 17	g03350176

14. Assemble slide and rotate locks – check that the seat slides and rotates properly and that the rotation and sliding locks operate properly. Apply Loctite 492 and torque the 4 bolts (R) for the stauff clamps that go around the rotation lever arm. Torque bolts (R ) to 2.5 N·m (22 lb in).

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Illustration 18	g03350063

15. Install harness starting with the stauff clamp at the center of the bearing and then route to the weld links on the seat box. After all harness connections and tie downs have been completed in the seat box, bolt the seat onto the new seat box.

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Illustration 19	g03350115

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Illustration 20	g03350117

16. Route harness out the back of the seat box and up to the side consoles. Make all harness connections in the right side console leaving the display connection loose. Install the plastic for the right side console and torque bolts to 1.7 N·m (15 lb in). Install display and vandal guard bracket, torque the T15 bolts to 1.7 N·m (15 lb in) and the T30 bolts to 6 N·m (53 lb in). After the plastic has been installed bolt display back into place. If your machine has the vandal guard, install the bracket for the vandal guard at the same time as the display.

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Illustration 21	g03350094

17. Route harness to the left side console and make the harness connection. Install plastic cover.

18. Before installing the covers to the seat box test the machine functionality. Test that when the machine is started and propelled that the machine moves and steers in the proper directions when the operator station is facing the front of the machine or the rear of the machine. Test that the operator station slides and rotates smoothly and that the locks work properly.

19. Assemble covers to seat box. Assemble knobs onto slide/rotate levers.