2011/03/25 Caterpillar

A New Track Roller Gp is Now Used on Certain Excavators {4180}

Usage:

330C BTM

Excavator: 330C (S/N: HAA1-UP; MCA1-UP; JAB1-UP; NAB1-UP; KDD1-UP; GAG1-UP; RBH1-UP; BTM1-UP; GKX1-UP) 330D (S/N: RDA1-UP; KAB1-UP; GBC1-UP; PFC1-UP; NBD1-UP; NEF1-UP; EAH1-UP; LCJ1-UP; FFK1-UP; PCK1-UP; RDK1-UP; LDR1-UP; EDX1-UP; MEY1-UP) 336D (S/N: SKE1-UP; PRF1-UP; WRK1-UP; MPL1-UP; JER1-UP; NLS1-UP; JBT1-UP; KKT1-UP; PGW1-UP; EMX1-UP)

Description of Change: A new Track Roller Gp is now used. The new Track Roller Gp has two solid pins for improved retention of the collars on the shaft. The shaft is stiffer to resist against bending. The stiffer shaft keeps the duo-cone seal in place. The stiffer shaft also keeps the O-ring seal from deforming. The roller flange covers the end collar to protect the duo-cone seal and will result in less change for packing. Refer to Illustration 1.

The rate of wear for the new Track Roller Gp has not changed. The rate of wear can be found in the Custom Track Service Handbook.

Adaptable To:

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Table 1
Part Numbers for the Track Rollers
New Part Number	Description	Former Part Number
183-2874	Track Roller Gp	179-1486
183-2879	Double Flange Track Roller	179-1491

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Table 2
Improved Track Roller Gp
Model	Effectivity	Adaptability
330C		S/N:HAA1-UP
		S/N:MCA1-UP
		S/N:JAB1-UP
		S/N:NAB1-UP
		S/N:KDD1-UP
		S/N:GAG1-UP
		S/N:RBH1-UP
		S/N:BTM1-UP
		S/N:GKX1-UP
330D		S/N:RDA1-UP
		S/N:KAB1-UP
		S/N:GBC1-UP
		S/N:PFC1-UP
		S/N:NBD1-UP
		S/N:NEF1-UP
		S/N:EAH1-UP
		S/N:LCJ1-UP
		S/N:FFK1-UP
		S/N:PCK1-UP
		S/N:RDK1-UP
		S/N:LDR1-UP
		S/N:EDX1-UP
		S/N:MEY1-UP
336D	S/N:SKE203-UP	S/N:SKE1-202
	S/N:PRF782-UP	S/N:PRF1-781
	S/N:WRK265-UP	S/N:WRK1-264
	S/N:MPL364-UP	S/N:MPL1-363
	S/N:JER223-UP	S/N:JER1-222
	S/N:NLS197-UP	S/N:NLS1-196
	S/N:JBT1394-UP	S/N:JBT1-1393
	S/N:KKT905-UP	S/N:KKT1-904
	S/N:PGW160-UP	S/N:PGW1-159
	S/N:EMX212-UP	S/N:EMX1-211