PRODUCT SUPPORT PROGRAM FOR REPLACING THE APRON LIFT CYLINDERS ON CERTAIN AP500F, AP555F, AP600F, AP655F, AP1000F, AND AP1055F ASPHALT PAVERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE APRON LIFT CYLINDERS ON CERTAIN AP500F, AP555F, AP600F, AP655F, AP1000F, AND AP1055F ASPHALT PAVERS

Usage:

TEBE8751-00

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12Feb2019

U-53

A-43

D-46

O-45

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After Failure Only	PRODUCT SUPPORT PROGRAM FOR REPLACING THE APRON LIFT CYLINDERS ON CERTAIN AP500F, AP555F, AP600F, AP655F, AP1000F, AND AP1055F ASPHALT PAVERS
7562 4303 5102 5138		PS53977

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NOTE:	Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
NOTE:	This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS53977" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "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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TERMINATION DATE

28Feb2021

PROBLEM

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The existing cylinders can fail to lift the apron on certain AP500F, AP555F, AP600F, AP655F, AP1000F, and AP1055F Asphalt Pavers equipped with the straight hinge power apron design. If the existing cylinder can not lift the apron it may lead to more hand work for the paving crew and customer dissatisfaction.

AFFECTED PRODUCT

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Model	Identification Number
AP1000F	AC400303-00304, 310-311, 314, 318-321, 327, 329, 337, 339-340, 342, 344-345, 353, 359-361, 364-365, 367-371, 373-375, 377-380, 383, 386, 388, 390-393, 395-397, 399-401, 407-411, 415-417, 421-422, 424-426, 431, 434, 437, 439-440
AP1055F	TJ500570-00575, 578-581, 584-588, 590-604, 606-608, 610, 612-617, 619-623, 625, 627-628, 630-631, 633-634, 637-639, 645-647, 649, 651-656, 659-665, 668-669, 676-678, 680-681, 683-688, 690-692, 694-695, 697, 701-705, 707-710, 713-714, 716, 721, 723-724, 726, 729-731, 734-750, 756-763, 765-772, 775, 777-779, 781-782, 784-787, 789-791, 793, 795, 797-799, 802-807, 809-816, 820-823, 825-827, 829-837, 840-850, 853-854, 858-863, 865-870, 873-875, 877-878, 882, 884-885, 887, 890-892, 895, 897-898, 900, 902-904, 906-913, 916-922, 924-926, 928-932, 934-937, 939, 943-950
AP500F	44900120-00126, 129-131, 134, 136-141, 143-147, 149 50300103, 105, 107-110 AF500100-00101 F5M00100-00110
AP555F	5F500112 AP500174, 176, 179-180, 183, 185, 187-194, 196-197, 199, 201-202, 204-205, 207-208, 210-214, 216, 218, 220, 224-225, 231-236, 238, 240, 245, 250, 252, 255, 259-260, 262, 265-268, 272 M4500104-00105 RBM00101
AP600F	AP600146-00149, 151, 153-158, 160-161, 163-164, 166-169, 172, 174-179, 181, 183-185, 187-189, 191-194, 197, 199, 201 D6F00100-00107 JA600102-00104, 107-108, 111-112 LR600112, 114, 117, 119, 125
AP655F	45200101-00104 45300104 47900154, 166-167, 170-171, 177-178 48000123-00135, 137-138, 141-143, 147-149, 153-154, 156-157 AC600101 MH600254-00261, 264-271, 273-275, 277-286, 290-294, 296-300, 302-305, 307, 309-313, 315-321, 323-344, 346-350, 354-359, 362, 365-366, 370-371, 373-376, 379-383, 385, 389, 391-392, 394, 396-398, 400-401, 403-407, 409, 411-414, 417 ML600120 P6500125-00126

PARTS NEEDED

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Qty	Part Number	Description
4	3B4629	PIN-COTTER
4	3J1907	SEAL-O-RING-STOR
4	4J5477	SEAL-O-RING-ORFS
2	5607045	CYLINDER GP-BSC
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 1% 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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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%
0-2400 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
2401-4800 hrs, 25-48 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

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NOTE: This is a 2.0-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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1) Lower the hopper and raise the center apron to allow access to hydraulic cylinders.
2) Turn the machine off and lock out machine to prevent it from starting.
3) Use suitable blocking to support the front apron.
4) Remove and cap the 4 hydraulic lines that go to the fittings on the apron lift cylinders.
5) Remove the 3B-4629 Cotter Pins that retain the hydraulic mounting pins.
6) Remove the mounting pins.
7) The new cylinders have a slightly larger outside diameter, so it is recommended to add a 5 mm chamfer to the front bumper at the location indicated by the arrow in the Image 1.1.1

Image1.1.1

8) Touch up the area where the material was removed with Yellow primer and Paint.
9) Note the orientation of the fittings in the old hydraulic cylinders.
10) Remove the fittings from the old cylinders.
11) Install the new seals in the fittings.
12) Install the fittings in the new cylinders with the same orientation.
Reference Image 1.2.1 for typical fitting orientation. This is the right hand cylinder, and the view is from the center of the machine.

Image1.2.1

13) Install the new cylinders in the paver, and use the new cotter pins to retain the mounting pins.
14) Remove the caps and install the hydraulic lines onto the fittings.
15) Remove the blocking and lockout on machine.
16) Start the machine and slowly cycle the front apron, to ensure there are no leaks and there is adequate clearance from the frame to the apron cylinders.
17) After ensuring there is no interference, cycle the apron 10 times to purge air from the system.