4-412
Fault Finding for Hydraulic and Mechanical Systems
H-03 Vibrator does not work
★
Diagnose electric systems first. If they are normal, then use procedures as instructed
bellow:
★
Check the oil level in the hydraulic tank before proceeding to the following procedures.
a) Both front and rear vibrators are inoperative.
4
5
YES
Does amplitude
select solenoid
valve spool move
smoothly?
Does motor gener-
ate load sounds or
rotating sounds?
1
3 YES
NO
Does problem lie in
LOW amplitude or
in HIGH or in both?
YES
NO
Is faulty condition
reversed if relief valve on
inoperative side is
exchanged with that on
normally functioning side?
2 YES
NO
YES
NO
1
NO
A
Does machine trav-
el?
Either in LOW or
HIGH amplitude
In both LOW and
HIGH amplitudes
Possible cause
Remedy
Vibrator pump or pump
coupling faulty.
Repair. Renew
if necessary.
Engine coupling faulty.
Amplitude select valve faulty.
Clean and adjust.
Renew if
necessary.
Amplitude select solenoid
valve faulty.
To ‘A’ on this page
Vibrator faulty
Vibrator drive motor faulty.
Main pressure relief valve
faulty (Foreign matter present
or valve faulty.).
Repair. Renew
if necessary.
Repair. Renew
if necessary.
Clean and adjust.
Renew if
necessary.
Repair. Renew
if necessary.
Repair. Renew
if necessary.
Repair. Renew
if necessary.
Is faulty condition
reversed if port relief
valve on inoperative side
is exchanged with that on
normally functioning side?
Port relief valve faulty (For-
eign matter present or valve
faulty.).
b) Either front or rear vibrator is inoperative.
Summary of Contents for SW800 Series
Page 1: ...CONFIDENTIAL SHOP MANUAL Series ...
Page 2: ......
Page 4: ......
Page 6: ......
Page 7: ...SPECIFICATIONS ...
Page 8: ......
Page 9: ...1 001 SPECIFICATIONS 1 External Views and Specifications 1 1 SW800 1 002 1 2 SW850 1 003 ...
Page 12: ...MEMO ...
Page 13: ...STRUCTURE OPERATION ...
Page 14: ......
Page 32: ...2 018 ...
Page 68: ...INSPECTION ADJUSTMENT ...
Page 69: ......
Page 73: ...3 101 ...
Page 88: ...TROUBLESHOOTING ...
Page 89: ......
Page 114: ...4 219 Troubleshooting for Electric System ...