PRODUCT SUPPORT PROGRAM FOR REWORKING THE SWING SPOOL ON CERTAIN 307E MINI HYDRAULIC EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE SWING SPOOL ON CERTAIN 307E MINI HYDRAULIC EXCAVATORS

Usage:

TEBE0938-01

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28Feb2014

(Revised 21Mar2014)

D-106

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR REWORKING THE SWING SPOOL ON CERTAIN 307E MINI HYDRAULIC EXCAVATORS
5480 5051		PS44202

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NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS44202" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

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NOTE:	This Revised Service Letter replaces the 28Feb2014 Service Letter. Changes have been made to the Parts Need to include the 4561759/">456-1759 Spool Clamp Assembly.

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TERMINATION DATE

28Feb2015

PROBLEM

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The existing swing spool can be defective on certain 307E Mini Hydraulic Excavators. If the existing swing spool fails, it can cause no swing or continuous slow swing implement movement.

AFFECTED PRODUCT

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Model	Identification Number
307E	H1Y00100-00157, 159-540, 542-560, 562-575, 577-636, 639-640, 643-645, 647-654, 656-675, 678-694, 713-717, 720-723, 726-729, 732-734

PARTS NEEDED

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Qty	Part Number	Description
1	6V5586	SEAL-O RING
2	1448073	LOCKWASHER-DISC
1	4491642	KIT-SPOOL
1	4561759	CLAMP AS
1	BULK_OIL	HYDRO-ADVANCED 10 (1 LITRE)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

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Replace with a new revised 449-1642 Swing Spool. Refer to the attached Rework Procedure.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-3000 hrs, 0-12 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 1.0-hour job

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

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a. Park machine on level ground with the implements lowered.

Refer RENR9744, Disassembly and Assembly, "System Pressure - Release".

b. Turn off the engine and battery isolator switch. Refer Image1.1.1

Image1.1.1

c. Unbolt the hydraulic top cover and cap using a 16mm box socket or wrench.

c. Attach a 311-1362 Vacuum Cap onto the hydraulic tank opening.

d. Attach an air supply hose onto the assembly.

e. Apply 276 to 414 kPa (40 to 60 psi). This will pull a vacuum on the hydraulic system. Refer Image1.2.1.

Image1.2.1

1. Remove two swing spool spring end cap screws with an M5 Allen drive.

2. Ensure the Allen bolt 144-8073 Washers and the 6V-5586 O-Ring Seal are properly kept safe for later assembly. Refer Image1.3.1.

Image1.3.1

3. Slide the swing spool halfway out from the spool bore.

Note: Do NOT remove the spool from the bore.

4. Install the spool holder D onto the spool. Use a grip clamp in order to clamp the spool holder. Refer Image1.4.1.

Image1.4.1

5. Use a 6mm Allen drive to unbolt the spool end, section E.

6. Loosen to remove the completed spool spring, section E.

7. Slide out the remaining spool section F from the valve block. Refer Image1.5.1.

Image1.5.1

8. Loosen and remove the new swing spool spring end section E using the
spool holder, grip clamp, and a 6mm Allen drive. Refer Image1.6.1.

9. Slide in the new swing spool section F into the valve block and assemble. Tighten the new spring end section E to a specified torque of 20 +/- 2 N.m) completely.

10. Assemble the swing spool end cap O-ring and the screws. Tighten the two screws with an M5 Allen drive to a specified torque of 10 +/- 1 N.m.

End of swing spool rework.