2011/11/18 Caterpillar

Improved Seal Kits are Now Used on Certain Excavators {5456, 5457, 5458}

Usage:

Excavator: 330C (S/N: HAA1-UP; MCA1-UP; JAB1-UP; KDD1-UP; GAG1-UP; RBH1-UP; JNK1-UP; B4N1-UP; CAP1-UP; DKY1-UP; CGZ1-UP) 330D (S/N: RDA1-UP; KAB1-UP; NBD1-UP; GGE1-UP; NEF1-UP; B6H1-UP; EAH1-UP; LCJ1-UP; THJ1-UP; PCK1-UP; LRM1-UP; ERN1-UP; JLP1-UP; MWP1-UP; LDR1-UP; HAS1-UP; RAS1-UP; MEY1-UP; T2Y1-UP) 336D (S/N: SKE1-UP; JBF1-UP; J2F1-UP; PRF1-UP; KDJ1-UP; W3K1-UP; MPL1-UP; MYP1-UP; JER1-UP; DTS1-UP; NLS1-UP; JBT1-UP; M4T1-UP; WET1-UP) 345C (S/N: TBA1-UP; FPC1-UP; SPC1-UP; ESD1-UP; GBH1-UP; GPH1-UP; TAJ1-UP; GCL1-UP; S5M1-UP; RFN1-UP; DHP1-UP; JAR1-UP; LYS1-UP; PJW1-UP; BWY1-UP) 345D (S/N: DPA1-UP; BYC1-UP; HLC1-UP; RGD1-UP; RAE1-UP; YEE1-UP; NEG1-UP; RGG1-UP; EEH1-UP; KFH1-UP; RAJ1-UP; MLK1-UP; NLM1-UP; JKN1-UP; FES1-UP; PBT1-UP; BYW1-UP; LKY1-UP) 349D (S/N: NNF1-UP)
Mobile Hydraulic Power Unit: 336D MHPU (S/N: J6D1-UP) 345D MHPU (S/N: P5D1-UP)

Description of Change: New seal kits are now used for the stick cylinder, boom cylinder, and the bucket cylinders. The new seals withstand a higher temperature and have a better ability to handle moisture content in the hydraulic oil.

Adaptable To: Table 1 lists the new parts that replace the former parts.

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Table 1
Replacement Parts
New Part Number	Part Name	Former Part Number
319-8295	Seal Kit	231-6844
331-9328	Seal Kit	225-4646
333-8675	Seal Kit	234-4442
333-8750	Seal Kit	225-4625
376-4331	Seal Kit	191-5619
324-9484	Buffer Seal	191-5645
333-8687	Buffer Seal	128-9266
333-8672	Buffer Seal	170-9850
324-6438	Buffer Seal	128-9265
324-6439	U-Cup Seal	170-9864
333-8673	U-Cup Seal	216-0008
333-8688	U-Cup Seal	170-9865
324-9486	U-Cup Seal	191-5646

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Table 2
Effectivity and Adaptability of the Improved Parts
Model	Effectivity	Adaptability
330C	S/N:HAA584-UP	S/N:HAA1-583
	S/N:MCA3181-UP	S/N:MCA1-3180
	S/N:JAB848-UP	S/N:JAB1-847
	S/N:KDD1705-UP	S/N:KDD1-1704
	S/N:GAG485-UP	S/N:GAG1-484
	S/N:RBH273-UP	S/N:RBH1-272
	S/N:JNK355-UP	S/N:JNK1-354
	S/N:B4N1019-UP	S/N:B4N1-1018
	S/N:CAP2295-UP	S/N:CAP1-2294
	S/N:DKY23435-UP	S/N:DKY1-23434
	S/N:CGZ996-UP	S/N:CGZ1-995
330D	S/N:RDA254-UP	S/N:RDA1-253
	S/N:KAB257-UP	S/N:KAB1-256
	S/N:NBD1475-UP	S/N:NBD1-1474
	S/N:GGE905-UP	S/N:GGE1-904
	S/N:NEF277-UP	S/N:NEF1-276
	S/N:B6H655-UP	S/N:B6H1-654
	S/N:EAH1636-UP	S/N:EAH1-1635
	S/N:LCJ319-UP	S/N:LCJ1-318
	S/N:THJ381-UP	S/N:THJ1-380
	S/N:PCK209-UP	S/N:PCK1-208
	S/N:LRM594-UP	S/N:LRM1-593
	S/N:ERN416-UP	S/N:ERN1-415
	S/N:JLP947-UP	S/N:JLP1-946
	S/N:MWP3386-UP	S/N:MWP1-3385
	S/N:LDR341-UP	S/N:LDR1-340
	S/N:HAS325-UP	S/N:HAS1-324
	S/N:RAS1315-UP	S/N:RAS1-1314
	S/N:MEY455-UP	S/N:MEY1-454
	S/N:T2Y408-UP	S/N:T2Y1-407
336D	S/N:SKE211-UP	S/N:SKE1-210
	S/N:JBF178-UP	S/N:JBF1-177
	S/N:J2F382-UP	S/N:J2F1-381
	S/N:PRF878-UP	S/N:PRF1-877
	S/N:KDJ394-UP	S/N:KDJ1-393
	S/N:W3K1674-UP	S/N:W3K1-1673
	S/N:MPL509-UP	S/N:MPL1-508
	S/N:MYP192-UP	S/N:MYP1-191
	S/N:JER249-UP	S/N:JER1-248
	S/N:DTS214-UP	S/N:DTS1-213
	S/N:NLS214-UP	S/N:NLS1-213
	S/N:JBT3481-UP	S/N:JBT1-3480
	S/N:M4T1573-UP	S/N:M4T1-1572
	S/N:WET351-UP	S/N:WET1-350
345C	S/N:TBA453-UP	S/N:TBA1-452
	S/N:FPC147-UP	S/N:FPC1-146
	S/N:SPC284-UP	S/N:SPC1-283
	S/N:ESD246-UP	S/N:ESD1-245
	S/N:GBH207-UP	S/N:GBH1-206
	S/N:GPH538-UP	S/N:GPH1-537
	S/N:TAJ381-UP	S/N:TAJ1-380
	S/N:GCL280-UP	S/N:GCL1-279
	S/N:S5M317-UP	S/N:S5M1-316
	S/N:RFN187-UP	S/N:RFN1-186
	S/N:DHP464-UP	S/N:DHP1-463
	S/N:JAR331-UP	S/N:JAR1-330
	S/N:LYS191-UP	S/N:LYS1-190
	S/N:PJW2443-UP	S/N:PJW1-2442
	S/N:BWY349-UP	S/N:BWY1-348
345D	S/N:DPA195-UP	S/N:DPA1-194
	S/N:BYC164-UP	S/N:BYC1-163
	S/N:HLC131-UP	S/N:HLC1-130
	S/N:RGD150-UP	S/N:RGD1-149
	S/N:RAE152-UP	S/N:RAE1-151
	S/N:YEE732-UP	S/N:YEE1-731
	S/N:NEG617-UP	S/N:NEG1-616
	S/N:RGG270-UP	S/N:RGG1-269
	S/N:EEH1171-UP	S/N:EEH1-1170
	S/N:KFH298-UP	S/N:KFH1-297
	S/N:RAJ420-UP	S/N:RAJ1-419
	S/N:MLK184-UP	S/N:MLK1-183
	S/N:NLM251-UP	S/N:NLM1-250
	S/N:JKN111-UP	S/N:JKN1-110
	S/N:FES177-UP	S/N:FES1-176
	S/N:PBT588-UP	S/N:PBT1-587
	S/N:BYW197-UP	S/N:BYW1-196
	S/N:LKY519-UP	S/N:LKY1-518
349D	S/N:NNF196-UP	S/N:NNF1-195
336D	S/N:J6D568-UP	S/N:J6D1-567
345D	S/N:P5D159-UP	S/N:P5D1-158