2011/12/05 Caterpillar

A New Valve Assembly is Now Used on Certain Excavators and Mobile Hydraulic Power Units {5057}

Usage:

345B 2NW

Excavator: 345BSeries II (S/N: ALB1-UP; APB1-UP; CCC1-UP; ALD1-UP; AMD1-UP; FEE1-UP; AKJ1-UP; AMJ1-UP; AMN1-UP; AYR1-UP; AGS1-UP; DET1-UP; DCW1-UP; AKX1-UP) 345B (S/N: BFG1-UP; CFM1-UP; 4SS1-UP; 5WS1-UP; 6XS1-UP; 7KS1-UP; 9GS1-UP; 2NW1-UP; 2SW1-UP; 6MW1-UP; 8KW1-UP; 8RW1-UP; 9CW1-UP) 345C (S/N: TBA1-UP; L5B1-UP; FPC1-UP; MDC1-UP; SPC1-UP; ESD1-UP; WDE1-UP; TDG1-UP; GBH1-UP; GPH1-UP; TAJ1-UP; A3L1-UP; GCL1-UP; S5M1-UP; RFN1-UP; SCN1-UP; DHP1-UP; JAR1-UP; M2R1-UP; D3S1-UP; ELS1-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; L5R1-UP; FES1-UP; PBT1-UP; BYW1-UP; LKY1-UP) 349D (S/N: JGB1-UP; WTD1-UP; NNF1-UP; RBJ1-UP; MEN1-UP)
Mobile Hydraulic Power Unit: 345C MHPU (S/N: M3E1-UP; M3F1-UP; NRF1-UP; B6N1-UP) 345D MHPU (S/N: P5D1-UP) 349D MHPU (S/N: DKN1-UP)

Description of Change: An improvement to the valve shaft has been made on the valve assembly for the machines listed above. The strength of the material is more durable and more resistant to breaking.

Adaptable To: The new 352-7160 Check Valve As replaces the former 123-2505 Check Valve As. Table 1 lists the effectivity and adaptability of the improved Check Valve As.

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Illustration 1	g02716621
(1) 4H The new 352-7160 Check Valve As (2) 4.0 The former 123-2505 Check Valve As

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Table 1
Effectivity and Adaptability of the Improved Check Valve As
Model	Effectivity	Adaptability
345B	S/N:ALB,399-UP	S/N:ALB1-398
	S/N:APB343-UP	S/N:APB1-342
	S/N:CCC1372-UP	S/N:CCC1-1371
	S/N:ALD212-UP	S/N:ALD1-211
	S/N:AMD361-UP	S/N:AMD1-360
	S/N:FEE303-UP	S/N:FEE1-302
	S/N:AKJ217-UP	S/N:AKJ1-216
	S/N:AMJ205-UP	S/N:AMJ1-204
	S/N:AMN387-UP	S/N:AMN1-386
	S/N:AYR299-UP	S/N:AYR1-298
	S/N:AGS2822-UP	S/N:AGS1-2821
	S/N:DET116-UP	S/N:DET1-115
	S/N:DCW338-UP	S/N:DCW1-337
	S/N:AKX416-UP	S/N:AKX1-415
345B	S/N:BFG405-UP	S/N:BFG1-404
	S/N:CFM88889-UP	S/N:CFM1-88888
	S/N:4SS1643-UP	S/N:4SS1-1642
	S/N:5WS430-UP	S/N:5WS1-429
	S/N:6XS218-UP	S/N:6XS1-217
	S/N:7KS1126-UP	S/N:7KS1-1125
	S/N:9GS286-UP	S/N:9GS1-285
	S/N:2NW157-UP	S/N:2NW1-156
	S/N:2SW220-UP	S/N:2SW1-219
	S/N:6MW217-UP	S/N:6MW1-216
	S/N:8KW267-UP	S/N:8KW1-266
	S/N:8RW273-UP	S/N:8RW1-272
	S/N:9CW222-UP	S/N:9CW1-221
345C	S/N:TBA453-UP	S/N:TBA1-452
	S/N:L5B105-UP	S/N:L5B1-104
	S/N:FPC147-UP	S/N:FPC1-146
	S/N:MDC243-UP	S/N:MDC1-242
	S/N:SPC284-UP	S/N:SPC1-283
	S/N:ESD246-UP	S/N:ESD1-245
	S/N:WDE169-UP	S/N:WDE1-168
	S/N:TDG413-UP	S/N:TDG1-412
	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:A3L106-UP	S/N:A3L1-105
	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:SCN212-UP	S/N:SCN1-211
	S/N:DHP464-UP	S/N:DHP1-463
	S/N:JAR331-UP	S/N:JAR1-330
	S/N:M2R314-UP	S/N:M2R1-313
	S/N:D3S309-UP	S/N:D3S1-308
	S/N:ELS180-UP	S/N:ELS1-179
	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:DPA194-UP	S/N:DPA1-193
	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:EEH1151-UP	S/N:EEH1-1150
	S/N:KFH298-UP	S/N:KFH1-297
	S/N:RAJ414-UP	S/N:RAJ1-413
	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:L5R203-UP	S/N:L5R1-202
	S/N:FES174-UP	S/N:FES1-173
	S/N:PBT572-UP	S/N:PBT1-571
	S/N:BYW197-UP	S/N:BYW1-196
	S/N:LKY509-UP	S/N:LKY1-508
349D	S/N:JGB250-UP	S/N:JGB1-249
	S/N:WTD121-UP	S/N:WTD1-120
	S/N:NNF148-UP	S/N:NNF1-147
	S/N:RBJ173-UP	S/N:RBJ1-172
	S/N:MEN271-UP	S/N:MEN1-270
345C MHPU	S/N:M3E107-UP	S/N:M3E1-106
	S/N:M3F114-UP	S/N:M3F1-113
	S/N:NRF105-UP	S/N:NRF1-104
	S/N:B6N172-UP	S/N:B6N1-171
345D MHPU	S/N:P5D159-UP	S/N:P5D1-158
349D MHPU	S/N:DKN107-UP	S/N:DKN1-106