TROUBLE SHOOTING
Cylinder rod packing set
leakage.
Check cylinders for leakage. Repair as needed.
External hydraulic fluid
leakage.
Control valve o-rings
defective.
Replace defective o-rings.
Control valve spool or body
damaged or worn.
Replace control valve.
Disassemble valve for inspection and repair.
Control valve spool(s) will
not return to centered
position.
Loose hydraulic connection.
Defective hydraulic hose,
tubeline, adapter fitting or
adapter fitting o-ring.
Tighten loose connections.
Check for origin of oil leak and replace defective
part.
Control lever linkage binding. Determine origin of binding and repair.
Control valve spool centering
is broken.
Replace centering spring.
Check cylinders for leakage.
Control valve internal leakage.
Note: A gradual drop over
an extended period of time
is a normal condition.
Replace control valve and recheck.
System relief valve squeals.
Backhoe drops with control
valve spool in "centered"
position (no external oil
leakage evident.)
Cylinder piston assembly
leakage.
Control valve spool binding
in valve body spool bore.
Relief valve setting below
specifications.
Check and reset valve setting as needed.
Hydraulic hose, tubeline or
quick disconnect coupler
restriction.
Check for evidence of restriction in hydraulic oil
flow. Repair or replace defective components.
Hydraulic Oil viscosity too
heavy or Incorrect oil
Check oil number and viscosity, Refill correct
hydraulic oil.
Excessive load in bucket.
Weight exceeds specified
backhoe capacity.
Reduce load.
PROBLEM
POSSIBLE CAUSE
CORRECTION
- 41 -
Summary of Contents for I3030
Page 11: ...SAFETY DECALS 40451025 40358872 40358873 40358868 40358870 40358871 10 ...
Page 12: ...SAFETY DECALS 40358874 40358875 40358878 40450477 40358876 40358812 40455586 11 ...
Page 47: ...IMBH10 SUBFRAME I3030 I3030H I3040 I3040H 46 ...
Page 49: ...IMBH10 SUBFRAME XR3032 XR3032H XR3037 XR3037H 48 ...
Page 51: ...IMBH10 SUBFRAME R4010 R4010H R4020 R4020H 50 ...
Page 53: ...IMBH10 SUBFRAME XR3135 XR3135H XR3140 XR3140H 52 ...
Page 55: ...IMBH10 SUBFRAME XR3135 XR3135H XR3140 XR3140H 54 ...
Page 57: ...IMBH10 SUBFRAME XR4040 XR4040H XR4046 XR4046H 56 ...
Page 59: ...IMBH10 SUBFRAME XR4140 XR4145 XR4150 XR4155 MT342 MT347 MT352 MT357 58 ...
Page 61: ...IMBH10 SUBFRAME MT345E MT350E MT355E 60 ...
Page 63: ...IMBH20 MAIN FRAME 62 ...
Page 65: ...IMBH21 SEAT CONTROL WALVOIL 64 ...
Page 67: ...IMBH30 SWING FRAME 66 ...
Page 69: ...IMBH40 BOOM 68 ...
Page 71: ...IMBH50 BUCKET DIPPERSTICK 70 ...
Page 73: ...IMBH50 BUCKET DIPPERSTICK 72 ...
Page 75: ...IMBH60 CONTROL VALVE SD6 6 74 ...
Page 79: ...IMBH61 HYDRAULIC LINE XR4140 XR4145 XR4150 XR4155 MT342 MT347 MT352 MT357 78 ...
Page 81: ...IMBH61 HYDRAULIC LINE MT345E MT350E MT355E S N 181129640 80 ...
Page 83: ...IMBH61 HYDRAULIC LINE MT345E MT350E MT355E S N 200415068 82 ...
Page 85: ...IMBH61 HYDRAULIC LINE MT345E MT350E MT355E 84 ...
Page 87: ...IMBH62 HYDRAULIC CONTROL FITTING a a A A f f F F c c d d b b B B f f F F e e E E 86 ...
Page 89: ...IMBH62 HYDRAULIC CONTROL FITTING a a A A f f F F c c d d b b B B f f F F e e E E 88 ...
Page 91: ...IMBH70 BUCKET CYLINDER 90 ...
Page 93: ...IMBH71 DIPPERSTICK CYLINDER 92 ...
Page 95: ...IMBH72 BOOM CYLINDER 94 ...
Page 97: ...IMBH73 SWING CYLINDER 96 ...
Page 99: ...IMBH74 STABILIZER CYLINDER LH 98 ...
Page 101: ...IMBH74 STABILIZER CYLINDER RH 100 ...