1995/02/27 Caterpillar

Oscillation Shaft Now Induction Hardened {6604}

Usage:

CS-531 (3WM),
CP-533 (3XL),
CS-533 (3BL),
CP-563 (1YJ, 5AJ),
CS-563 (8XF, 7GG),
CS-583 (8YJ) Vibratory Compactors

SUPPLEMENT: 06/26/95

Service Magazine; February 27, 1995; "Oscillation Shaft Now Induction Hardened"; Page 7; for CS-531, CP-533, CS-533, CP-563, CS-563, and CS-583 Vibratory Compactors.

The steps to install the oscillation shaft after Illustration 3 on Page 7 were incorrectly numbered. To preserve the sequence of the procedure, renumber the steps starting with Step 2 on Page 7. Begin numbering the sequence with "Step 4" and renumber the steps through to "Step 12".

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Description of Change: The oscillation shaft is now induction hardened for increased service life. The diameter of the new shaft has been increased so that a there is an interference fit with the spherical bushings. The new shaft is serviceable.

Adaptable To: The new 104-7047 Shaft is a direct replacement for the former 7R-6711 (not serviced) which is canceled. The new shaft is effective with CS-531 (3WM26), CS-533 (3BL89), CP-533 (3Zl26), CS-563 (8XF884, 7GG457 [Except 7GG480 and 7GG498]), CP-563 (1YJ385, 5AJ128 [Except 5AJ138 and 5AJ139]), CS-583 (8YJ137).

The new shaft is adaptable to earlier machines by following the procedure listed below.

Procedure To Install Oscillation Shaft

1. Refer to corresponding Disassembly and Assembly Manuals, to remove the Yoke and Drum.

Illustration 1. Location Of Shaft For Welding (A) 15.0 mm (.59 in) two places. (B) 508 mm (20 in) reference. (C) 254.0 mm (10.00 in). (D) 127.0 ± 1.5 mm (5.00 ± .06 in).

2. Using a torch, remove the former 7R-6711 Shaft.

3. Weld the new 104-7047 Shaft in place, as shown in Illustration 1, using a low-hydrogen Gas Metal Arc Welding process.

NOTE: Protect the bearing surfaces of the shaft while welding.

Illustration 2. Cross-Section Of Yoke Oscillation Assembly (1) Spacer. (2) Steer Pivot Assembly. (3) Plate Assembly.

Illustration 3. Location Of Dial Indicator (4) Bushing. (5) Spherical Bushings. (6) Oscillation Shaft. (7) Shims. (8) Bolts.

2. Refer to Illustrations 2 and 3 for assembly procedure.

3. Clean all parts. Install spacer (1) into steer pivot assembly (2) and plate assembly (3).

4. Press the outer half of spherical bushing (4) into steer pivot assembly (2) and plate assembly (3).

NOTE: Line up grease holes in bushings (4) OPPOSITE of the grease supply holes in steer pivot assembly (2) and plate assembly (3).

5. Heat the inner halves of spherical bushings to 180°C (356°F) and install onto oscillation shaft (6).

6. Refer to the corresponding Disassembly and Assembly Manuals to install the yoke. Install plate assembly (3) using four 7X-8034 Shims (7), (two on top and two on bottom). Install eight bolts (8) and tighten to a torque of 184 N·m (136 lb ft).

7. Place a dial indicator on the steer pivot plate assembly (3) as shown and place the indicator actuator on the center of oscillation shaft (6).

8. Using a pry bar, move the yoke forward and rearward to determine the amount of endplay. Loosen bolts and add or subtract the right combination of shims to achieve 0.05 to 0.23 mm (.002 to .009 in) endplay. Tighten the bolts to a torque of 800 N·m (592 lb ft). Refer to the Oscillation Shim chart for part numbers for required shims.