Thomas 85 - Page 139

4-25
4
Symptom Cause Corrective Action Section
Loader creeps, Neutral adjustment Adjust linkage 4.1
won’t center Worn, loose linkage Replace, tighten parts 4.1
Binding, dragging parts Repair, replace 4.1
Steering jerky Worn, loose linkage Replace 4.1
Binding linkage Repair, replace 4.1
Linkage adjustment Adjust 4.1
Low charge pressure Repair, replace 2
Loader doesn’t track straight Limiter stops Adjust 4.1
Binding linkage Repair, replace 4.1
Hydrostatic failure Repair, replace 2
Boom controls inoperative Damaged cables, linkage Replace 4.2, 4.3
Safety switch ( s ) Adjust, replace 5
Bad electrical ground Repair 5
Blown fuse Replace 5
Valve lock malfunction Replace parts 1, 5
Low hydraulic oil Replenish 1
No oil pressure Make repairs 1
Boom operation slow Cable linkage Replace, adjust 4.2, 4.3
Aux. hydraulics engaged Disengage
Engine rpm low Adjust 7
Control valve relief Adjust, replace 1
Cylinder seal, damage Repair, replace 1
Boom controls stiff Cable wear Replace 4.2, 4.3
Pivot wear Replace parts 4.2, 4.3
Control valve wear Repair, replace 1
Auxiliary hyd. inoperative Blown fuse Replace 5
(solenoid control type) Switch ( s ) failure Replace 5
Aux. valve malfunction Repair, replace 1
Electrical short Repair 5
Bad electrical ground Repair 5
Brake won’t hold Pins and or linkage binding Inspect and service
Pins worn Replace
Brake won’t release Pins binding,broken cable Repair or replace
TROUBLE SHOOTING 4.7