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27 July 2015 F29766C-F29766C EN
Service Bulletin
BINDER:
Agricultural Equipment
PAGE:
1 / 6
FILE UNDER:
Agricultural Tractors
DATE:
27 July 2015
ISSUE NUMBER:
ISSUED BY:
Quality & Product Support
REPLACES:
BULLETIN NUMBER:
2015 - 093 CIH N SB
SERIES:
STEIGER®
MODELS AFFECTED:
QuadTrac® 470 , QuadTrac® 540 , QuadTrac® 580 ,
QuadTrac® 620 , RowTrac™ 350 , RowTrac™ 370 ,
RowTrac™ 400 , RowTrac™ 420 , RowTrac™ 450 ,
RowTrac™ 470 , RowTrac™ 500 , Steiger® 350 , Steiger®
370 , Steiger® 400 , Steiger® 420 , Steiger® 450 , Steiger®
450 QT , Steiger® 470 , Steiger® 500 , Steiger® 500 QT ,
Steiger® 540 , Steiger® 550 , Steiger® 550 QT , Steiger®
580 , Steiger® 600 , Steiger® 600 QT , Steiger® 620
GROUP - SUBGROUP -
DEFECT:
35 204
SUBJECT:
UNNECESSARY REPLACEMENT OF THE HYDRAULIC
COUPLERS – INCORRECT USE OR INCORRECT
MAINTENANCE OF THE HYDRAULIC COUPLERS
DESCRIPTION
The information in the service bulletin will provide information on how to maintain hydraulic couplers properly.
Unnecessary hydraulic coupler replacement
People replace the hydraulic couplers unnecessarily for the following issues:
• Leaks due to contamination
NOTE:
See the section “Hydraulic coupler oil leakage:”.
• Hard to connect or disconnect
NOTE:
See the section “A Jammed latching ball can make the hydraulic coupler difficult to connect or disconnect.”
• The hose ends eject from the hydraulic coupler
NOTE:
See the section “Male implement ends pop out of the hydraulic coupler”.
Incorrect use and incorrect maintenance of a hydraulic coupler
Incorrect use and incorrect maintenance of the hydraulic coupler can shorten the service life of the hydraulic cou-
pler. The following are examples of incorrect use or incorrect maintenance that can cause a hydraulic coupler fail-
ure:
• Someone who connects the hydraulic coupler where contamination such as dirt and debris is present
• Someone who connects the hydraulic coupler to a male hydraulic coupler that has damaged components, dirty
components, or worn components
• The use of excessive force to disconnect the hydraulic coupler
