Installation of the 490-2714 Valve Wiring Gp on Certain Hydraulic Excavators {1408} Caterpillar

Excavator

320 (S/N: BR61-UP; ZBN1-UP; HEX1-UP)

320 GC (S/N: KTN1-UP)

323 (S/N: BR91-UP; YBL1-UP; RAZ1-UP)

330 (S/N: PFN1-UP; LHW1-UP)

336 (S/N: FEL1-UP; YBN1-UP)

336 GC (S/N: EBJ1-UP)

Introduction

Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.

Safety Section

Illustration 1	g00104545

Prevent the machine from movement. Park the machine on a level surface.

Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch or to the controls before you service equipment . These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.

Required Parts

Illustration 2	g06234025

Installation Procedure

Illustration 3	g06234026
(A) Connect to harness (6 POLES), "K856 PU", "K860 BU", "K857 WH",,"K861 GN", "J807 BK" (B) Connect to STEM 2 RETRACT EPRV, "K861 GN", "J807 BK" (C) Connect to STEM 2 EXTEND EPRV, "K857 WH", "J807 BK" (D) Connect to STEM 1 EXTEND EPRV, "K856 PU", "J807 BK" (E) Connect to STEM 1 RETRACT EPRV, "K860 BU", "J807 BK"