The Flange Head on 442-5593 Coupling As May Have Been Manufactured Incorrectly {5057} Caterpillar

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Introduction

The problem that is identified below has a known solution. Use the solution that is identified below.

Problem

The flange head on 442-5593 Coupling As may have been manufactured incorrectly. The couplings that were manufactured incorrectly have a date code of FATR.

Solution

Use the following procedure to determine if the coupling assembly is correct:

1. If 442-5593 Coupling As is used, check the date code.

2. If the date code is FATR, measure the flange thickness.
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   Illustration 1	g06275152
   (A) 14.25 ± 0.15 mm (0.561 ± 0.006 inch)

3. The flange thickness should have dimension (A) if the coupling is good.
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   Illustration 2	g06275156
   (B) 10 mm (0.4 inch)

4. If the flange thickness has dimension (B), replace existing 442-5593 Coupling As with correct 442-5593 Coupling As (as referred in Illustration 1).