FAILURE OF THE 169-5725 QUICK COUPLER GP ON 302.5 MINI HYDRAULIC EXCAVATORS FITTED WITH HAMMERS Caterpillar

FAILURE OF THE 169-5725 QUICK COUPLER GP ON 302.5 MINI HYDRAULIC EXCAVATORS FITTED WITH HAMMERS

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FAILURE OF THE <a class="catalog_a_num" href="https://avspare.com/caterpillar/coupler/1695725/">169-5725</a> QUICK COUPLER GP ON 302.5 MINI HYDRAULIC EXCAVATORS FITTED WITH HAMMERS

CONFIDENTIAL TIBU3428-04

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TECHNICAL INFORMATION BULLETIN	JULY 23, 2003
WORK TOOL MINI HYDRAULIC EXCAVATOR	THIS TECHNICAL INFORMATION BULLETIN REPLACES THE NOVEMBER 6, 2002 WORK TOOL AND MINI HYDRAULIC EXCAVATOR TIB, "FAILURE OF QUICK COUPLERS ON MINI HYDRAULIC EXCAVATORS FITTED WITH HAMMERS". DISCARD THE NOVEMBER 6, 2002 TIB. IT WILL NOT APPEAR IN THE SEMI-ANNUAL INDEX. H45/H45S (6CZ1-UP), H50/H50S (5MZ1-UP), H63/H63S (4GL1-UP) HAMMER 302.5 (4AZ1-UP) MINI HYDRAULIC EXCAVATOR
	Component Code(s): 6129, 6333

SUBJECT: FAILURE OF THE 169-5725 QUICK COUPLER GP ON 302.5 MINI HYDRAULIC EXCAVATORS FITTED WITH HAMMERS

PROBLEM:

Reports have been received of failures of the 169-5725 Quick Coupler Gp on 302.5 Mini Hydraulic Excavators that were fitted with hammers. The failures include fractures and cracking to the body and arms of the quick coupler, as shown in Figure 1.

SOLUTION:

The 169-5725 Quick Coupler Gp is not approved for hammer applications. Hammers that are to be fitted to 302.5 Mini Hydraulic Excavators must be fitted as "PIN ON" attachments only.

Figure 1. Fractures and cracking of the body and arms of the quick coupler

COPYRIGHT 2003 CATERPILLAR
ALL RIGHTS RESERVED

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