Improvements to the Main Hydraulic Pump are Now Used on Certain Excavators and Mobile Hydraulic Power Units {5070} Caterpillar

Improvements to the Main Hydraulic Pump are Now Used on Certain Excavators and Mobile Hydraulic Power Units {5070}

Usage:

Excavator: 345D (S/N: DPA1-UP; BYC1-UP; HLC1-UP; RGD1-UP; RAE1-UP; YEE1-UP; NEG1-UP; RGG1-UP; EEH1-UP; KFH1-UP; MLK1-UP; NLM1-UP; JKN1-UP; FES1-UP; BYW1-UP; LKY1-UP); 345D MHPU (S/N: L5R1-UP); 349D (S/N: FLA1-UP; JGB1-UP; WTD1-UP; GKF1-UP; NNF1-UP; PZG1-UP; KLH1-UP; RBJ1-UP; MEN1-UP; KHS1-UP); 349D2 (S/N: CE41-UP; XAC1-UP; PFD1-UP; YAE1-UP; ZAE1-UP; YAG1-UP; TAH1-UP; SDM1-UP; RAN1-UP); 349E (S/N: FJB1-UP; ETC1-UP; DGE1-UP; FKF1-UP; SPG1-UP; TFG1-UP; RGH1-UP; KCN1-UP; MZW1-UP; KFX1-UP; MPZ1-UP; WHZ1-UP); 349F (S/N: BZ21-UP; KEA1-UP; HLB1-UP; HPD1-UP); 352F (S/N: YEG1-UP; A9J1-UP; XAL1-UP; KBP1-UP)
Mobile Hydraulic Power Unit: 345D MHPU (S/N: P5D1-UP); 349D MHPU (S/N: DKN1-UP; MCX1-UP); 349E MHPU (S/N: JAE1-UP; S3P1-UP)

Description Of Change: A new pin assembly is now used in the main hydraulic pump. The new pin assembly allows the pump to go to full displacement and provide a longer life expectancy of the hydraulic pump.

Adaptable To: The new 488-4578 Pin As replaces the former 247-8712 Pin As. Refer to Table 2 for the effectivity and adaptability of the new pin assembly in the main hydraulic pump.

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Table 1
New Part Number	Part Name	Former Part Number
488-4576	Piston and Gear Pump Gp	465-1021
488-4577	Main Hydraulic Pump Gp	465-1020

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Table 2
Effectivity and Adaptability of the New Pin Assembly
Sales Model	Effectivity	Adaptability
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:EEH1289-UP	S/N:EEH1-1288
	S/N:KFH300-UP	S/N:KFH1-299
	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:BYW197-UP	S/N:BYW1-196
	S/N:LKY541-UP	S/N:LKY1-540
349D	S/N:FLA209-UP	S/N:FLA1-208
	S/N:JGB1010-UP	S/N:JGB1-1009
	S/N:WTD222-UP	S/N:WTD1-221
	S/N:GKF398-UP	S/N:GKF1-397
	S/N:NNF565-UP	S/N:NNF1-564
	S/N:PZG2-UP	S/N:PZG1
	S/N:KLH274-UP	S/N:KLH1-273
	S/N:RBJ232-UP	S/N:RBJ1-231
	S/N:MEN550-UP	S/N:MEN1-549
	S/N:KHS147-UP	S/N:KHS1-146
349D2	S/N:XAC161-UP	S/N:XAC1-160
	S/N:PFD2-UP	S/N:PFD1
	S/N:YAE274-UP	S/N:YAE1-273
	S/N:ZAE2-UP	S/N:ZAE1
	S/N:YAG2-UP	S/N:YAG1
	S/N:TAH389-UP	S/N:TAH1-388
	S/N:SDM167-UP	S/N:SDM1-166
	S/N:RAN235-UP	S/N:RAN1-234
	S/N:CE4105-UP	S/N:CE41-104
349E	S/N:FJB203-UP	S/N:FJB1-202
	S/N:ETC164-UP	S/N:ETC1-163
	S/N:DGE363-UP	S/N:DGE1-362
	S/N:FKF109-UP	S/N:FKF1-108
	S/N:SPG239-UP	S/N:SPG1-238
	S/N:TFG1136-UP	S/N:TFG1-1135
	S/N:RGH211-UP	S/N:RGH1-210
	S/N:KCN355-UP	S/N:KCN1-354
	S/N:MZW221-UP	S/N:MZW1-220
	S/N:KFX703-UP	S/N:KFX1-702
	S/N:MPZ829-UP	S/N:MPZ1-828
	S/N:WHZ148-UP	S/N:WHZ1-147
349F	S/N:KEA	S/N:KEA
	S/N:HLB2-UP	S/N:HLB1
	S/N:HPD491-UP	S/N:HPD1-490
	S/N:BZ2476-UP	S/N:BZ21-475
352F	S/N:YEG228-UP	S/N:YEG1-227
	S/N:A9J273-UP	S/N:A9J1-272
	S/N:XAL2-UP	S/N:XAL1
	S/N:KBP234-UP	S/N:KBP1-233
345D MHPU	S/N:P5D159-UP	S/N:P5D1-158
345D MHPU	S/N:L5R203-UP	S/N:L5R1-202
349D MHPU	S/N:DKN169-UP	S/N:DKN1-168
349D MHPU	S/N:MCX159-UP	S/N:MCX1-158
349E MHPU	S/N:JAE126-UP	S/N:JAE1-125
349E MHPU	S/N:S3P219-UP	S/N:S3P1-218