Fit and Form Changes on Inverter Used on F series Pavers {1404, 1408, 4459} Caterpillar

Asphalt Paver

AP1055F (S/N: TJ51-UP; RLM1-UP)

AP500F (S/N: 5031-UP; AF51-UP; 4491-UP; F5M1-UP)

AP555F (S/N: AP51-UP; M451-UP; 5F51-UP; RBM1-UP)

AP600F (S/N: AP61-UP; JA61-UP; LR61-UP; D6F1-UP)

AP655F (S/N: 4801-UP; 4521-UP; 4531-UP; P651-UP; 6551-UP; MH61-UP; ML61-UP; 4791-UP)

AP855 (S/N: CA71-UP)

Introduction

There have been some changes to the Fit and Form of the SR inverter used on the F Series Pavers. This document is intended to be a guide on the changes, and potential rework required to update a paver to the newer designs.

The original, 448-9287 Power Inverter Group, had a quality issue that was resolved with Inverter serial numbers greater than JF300625. Inverters with serial numbers JF300626 and above are built with the quality issue resolved.

499-2622 SR Power Inverter Group was released to allow easier tracking of the Inverters built with the quality improvements to 448-9287.

549-8335 SR Power Inverter Group was designed and released due to reaching end of life of the housing casting tooling used to manufacture the 499-2622 Power Inverter Group. The casting changes created some space claim clearance issues with the pavers. The following possible interferences need evaluated if either 448-9287 or 499-2622 is replaced with an SR inverter with the new casting design, component 566-9528.

Problem

There have been some changes to the Fit and Form of the SR inverter used on the F series pavers.

Solution

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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.

This document is intended to be a guide on the changes, and potential rework required to update a paver to the newer designs.

Note: F. For these machines it is optional to use existing fenders if bolts not to interfere with inverter housing.

Note: G. For these machines it is optional to use existing fenders if bolts not to interfere with inverter housing.

Illustration 1	g06392853
(A) Make sure that bolts do not interfere with inverter housing

Note: H. For these machines it is optional to use existing door assembly if prop rod bracket does not interfere with inverter housing.

Note: J. For these machines it is optional to use existing door assembly if prop rod bracket does not interfere with inverter housing. It will be necessary to remove or replace toolbox with new toolbox.

Illustration 2	g06392923
See Note H and Note J

Illustration 3	g06392925
See Note H and Note J

Illustration 4	g06392934
See Note J

The SR Inverter 549-8335 has a change to the internal pad height where the phase cables from the generator attach to the SR Inverter. Machines built with these SR inverters have longer bolts ( 6V-8837) and a spacer ( 566-9116) between the cable and pad internal to the inverter. If the 549-8335 inverter is replaced in the field, the bolts and spacer ( 6V-8837 & 566-9116) should be discarded and replaced with quantity of 6 of bolt 2W-9513.

The hardware also changed for the ground wire on the phase cables. The hardware changed from M6 to M5. Discard Qty 3 of Washer 1A-8912, Lockwasher 1H-3338 and Bolt 5C-9553, replacing them with Washer 4B-4274, Lockwasher 096-0192 and Bolt 7I-2273.

The current SR Inverter, 566-9528, has the internal pad height correct to ensure optimal centering of the phase cables without spacers. Bolt 2W-9513 is again used for the phase cables, and the following hardware is used for the phase ground wires. Washer 4B-4274, Lockwasher 096-0192 and Bolt 7I-2273.

Currently, 2 SR inverters are available through the parts depots, 499-2622 and 566-9528. Both have the same high expected quality levels. 499-2622 will ensure fit up on older machines without modification. 566-9528 is the current part number in production and is a drop in fit in newer machines.

When the supply of 499-2622 has been exhausted, all machines will need to be serviced with the 566-9528 inverter.