O-RING 0983611 - Caterpillar

TECHNICAL INFORMATION BULLETIN MAY 04, 2005
EXCAVATORS 318C (GPA, CWP, MDY),
320C (FBA, MAA, BCB, MAB, AMC, BDC, BEF, AKH, BPR, RAW),
320C L (GAA, PAA, ANB, BDB, PAB, HBC, ALF, SBN, BER, BRX),
320C FMST (BKK, TBR), 320C FMHW (BGB, SAH), 322C (DAA, HBG, BFN, BLP, ADX, BNY), 322C L (FED, BTE, KCF, BKM, BFX, BMX),
325C (BLA, AMH, BKH, BKW),
325C L (BTD, BMM, BKT, BLX),
330C (MCA, JAB, GAG, BTM),
330C L (CYA, HAA, KDD, RBH, SCN, GKX), EXCAVATORS
Component Code(s) 5057SUBJECT: OIL MAY LEAK FROM THE FLANGE FOR THE SUPPLY HOSE IN THE
FRONT LINES GROUP ON CERTAIN EXCAVATORS
PROBLEM:
The flange on the stem for the supply hose assemblies may crack. The material for the stem in certain hose assemblies may be of insufficient strength. A cracked flange will create oil leaks.
SOLUTION:
If oil leaks occur from the 194-0174 Hydraulic Hose Group or the 194-0177 Hydraulic Hose Group on the machines that are listed, replace the former hose assemblies with a new 194-0174 Hydraulic Hose Group or a new 194-0177 Hydraulic Hose Group. The stems for new hoses are manufactured from a material that has increased strength. The locations of the hoses are shown in Illustration 1.
Illustration 1. Supply Hoses On The Main Control Valve
(1) 194-0174 Hydraulic Hose Group
(2) 194-0177 Hydraulic Hose Group
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