2013/10/23 Caterpillar

Pipelayer:

PL61 (S/N: WGS1-UP)

Track-Type Tractor:

D6K LGP (S/N: DHA1-UP)

D6K XL (S/N: FBH1-UP)

ReferenceSpecial Instruction, REHS8536, "A Rework Procedure to Replace the Expansion Tank Group Is Now Available for Certain PL61 Pipelayers and D6K Track-Type Tractors".

Description of Change: The new expansion tank group will increase the service life of the system.

Adaptable To:

Illustration 1	g03453439

The new 247-1385 Expansion Tank Gp (1) replaces the former 244-1792 Expansion Tank Gp .

The new 247-1385 Expansion Tank Gp (1) is adaptable to the machines and effective in production with the machines that are listed in Table 1.

Table 1

Sales Model	Adaptable To	Effective with
D6K LGP	S/N:DHA1-1386	S/N:DHA1500-UP
D6K XL	S/N:FBH1-1671	S/N:FBH1800-UP
PL61	S/N:WGS1-182	S/N:WGS183-UP

Refer to Special Instruction, REHS8536, "A Rework Procedure to Replace the Expansion Tank Group Is Now Available for Certain PL61 Pipelayers and D6K Track-Type Tractors" for complete list of parts required and the installation procedure for the new expansion tank group.