The Implement Valve Tilt or Lift Section Centering Spring May Break on Certain Compact Track Loaders, Multi Terrain Loaders, and Skid Steer Loaders {5051} Caterpillar

Compact Track Loader

279D (S/N: WEF1-UP; GTL1-UP; PPT1-UP; RCX1-UP)

289D (S/N: WCT1-UP; TAW1-UP; A9Z1-UP)

299D XHP (S/N: JST1-UP)

299D2 (S/N: FD21-UP)

299D2 XHP (S/N: DX21-UP; DX91-UP)

Multi Terrain Loader

277D (S/N: NTL1-UP; FMT1-UP; MLT1-UP)

287D (S/N: STK1-UP; TLK1-UP; HMT1-UP)

297D2 (S/N: BL71-UP)

297D2 XHP (S/N: HP21-UP)

Skid Steer Loader

246D (S/N: BYF1-UP; JSL1-UP; HMR1-UP)

262D (S/N: DTB1-UP; KTS1-UP; LST1-UP)

272D XHP (S/N: ETL1-UP)

272D2 (S/N: BL21-UP)

272D2 XHP (S/N: MD21-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

Reports have been received that the centering spring on tilt or lift spool in the implement valve breaks on the machines listed above. Due to this failure centering spring will not allow the spool to return to center properly. Symptoms of a damaged spring can be jerky, abrupt movement of implements, unable to calibrate self level, or linkage drift after releasing joysticks.

Solution

Illustration 1	g06365090
(A) 456-1770 Bank Valve

Illustration 2	g06365091
View of area B (1) 529-7729 Spool Spring

In the event of failure, replace the centering spring in the bank valve (A) with the new spool spring (1).