Page 26
Hydraulic System Troubleshooting, Testing and
Adjustment
Return to Master Table of Contents
Sluggish performance of all
hydraulic functions - attachment,
swing and travel.
Main pump(s) damaged or worn
Repair or replace
Main relief valve pressure off
Readjust pressure
Low oil level in hydraulic system
Refill
Hydraulic reservoir intake
strainer clogged
Clean
Pump inlet (supply side) piping
or hose allowing air into
hydraulic system
Tighten connection
Oil temperature abnormally
high.
Oil cooler clogged or air
circulation to cooler blocked
Clean
Cooling fan belt tension too
loose
Readjust belt tension
Relief valve set too low
Readjust valve
Relief valve in constant use
Reduce or slow work load or
cycling rate
Hydraulic oil severely neglected
or incorrect for application
Replace oil
One circuit in hydraulic system
inoperable.
Overload relief valve malfunction
Readjust or replace
Oil leak at make-up valve
Clean, repair
Control valve spool damaged
Repair or replace
Dirt in control valve spool
Clean or replace
Actuator (joystick, foot pedal)
damaged or worn
Repair or replace
Internal seal leak in cylinder
Repair or replace
Cylinder rod damaged
Repair or replace
Pilot valve or piping malfunction
Repair or replace
Mechanical linkage frozen,
loose or damaged
Repair or replace
Travel motors inoperable.
Center joint damaged.
Repair or replace.
Parking brake not releasing.
Repair or replace.
Travel motor worn or damaged.
Repair or replace.
Travel motor pilot piping
damaged.
Repair or replace.
Travel motors operate very
slowly.
Track tension poorly adjusted
Low oil in idlers or rollers.
Readjust tension Refill.
Travel brake dragging.
Repair
Track frame out of alignment,
deformed or twisted.
Repair
Swing motor inoperable.
Swing brake not releasing.
Repair or replace
Relief valve malfunction.
Repair or replace
Pilot piping damaged.
Repair or replace
Problem
Possible Causes
Remedies
Содержание Solar 420LC-V
Страница 1: ...Return to Master Table of Contents 1HYDRAULICS...
Страница 31: ...Page 30 Hydraulic System Troubleshooting Testing and Adjustment Return to Master Table of Contents...
Страница 33: ...S0703010K Page 2 Accumulator TABLE OF CONTENTS General Description 3 Specifications 4...
Страница 43: ...S0704090K Page 8 Center Joint Swivel...
Страница 63: ...S0705000 Page 20 Cylinders Return to Master Table of Contents...
Страница 70: ...S0707260 Page 7 Swing Motor...
Страница 74: ...S0707260 Page 11 Swing Motor SPECIAL TOOLS Figure 5...
Страница 91: ...S0707260 Page 28 Swing Motor...
Страница 103: ...S0707365 Page 12 Travel Motor With Gearbox A6V160HD PARTS LIST Travel Motor Figure 12 HTS6331...
Страница 105: ...S0707365 Page 14 Travel Motor With Gearbox A6V160HD Travel Motor Rotary Group Figure 13 HTS6321...
Страница 107: ...S0707365 Page 16 Travel Motor With Gearbox A6V160HD Travel Motor Control HTS6331 Figure 14...
Страница 109: ...S0707365 Page 18 Travel Motor With Gearbox A6V160HD Travel Motor Speed Reduction Gearbox Assembly 3033 Figure 15...
Страница 114: ...S0707365 Page 23 Travel Motor With Gearbox A6V160HD TRAVEL MOTOR DISASSEMBLY SECTIONAL VIEW HTS063S Figure 16...
Страница 136: ...S0707365 Page 45 Travel Motor With Gearbox A6V160HD 29 Remove gasket Figure 91 Figure 91 3061...