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IV-106
HYDRAULIC UNITS
CYLINDERS
TROUBLESHOOTING
Symptom
Probable Causes
Remedy
Oil leaks from piston rod slid-
ing surface (an oil ring forms on
the piston and this enlarges and
drips off).
• Foreign matter is caught in the
inner diameter portion of the rod
packing, backup ring or dust seal.
• The inner diameter lip of the rod
packing, backup ring or dust seal is
damaged or abnormal.
• Remove the foreign matter.
• Replace the affected parts.
• Piston rod sliding surface is
scratched.
• The hardened chrome plating is
separating from the piston rod.
• Smooth the sliding surface with an
oil stone (1.6 S or lower)
• If it leaks after the sliding surface
has been smoothed, replace the rod
packing and other seals.
• If it leaks after the seals have been
replaced, replace the piston rod.
• Repair the hardened chrome plat-
ing.
Oil leaks from the outer circum-
ference of the rod cover.
• O-ring is damaged.
• Backup ring is damaged.
• Replace the affected parts.
• Replace the affected parts.
Oil leaks from welded portion.
• The tube
·
s welds are damaged.
• Replace the affected parts.
Cylinder natural drop (this is the
maximum amount of movement
of the piston in 10 minutes when
a static weight corresponding to
the maximum use pressure mul-
tiplied by the cylinder
·
s surface
area) is 0.5 mm or greater.
• Foreign matter is caught in the wear
ring sliding surface.
• The sliding surface of the wear ring
is scratched or abnormal.
• The piston packing sliding surface
is scratched.
• The O-ring is damaged.
• Remove the foreign matter.
• Replace the affected parts.
• Replace the affected parts.
• Replace the affected parts.
Summary of Contents for TL150
Page 1: ...TL150 Track Loader BOOK No CT7E901 WORKSHOP MANUAL Serial No 21500004...
Page 4: ...0 4...
Page 5: ...I 1 I GENERAL...
Page 18: ...I 14 GENERAL...
Page 19: ...II 1 II SPECIFICATIONS...
Page 44: ...III 1 III MACHINE CONFIGURATION...
Page 94: ...III 51 MACHINE CONFIGURATION ELECTRICAL SYSTEM ELECTRICAL SYSTEM ELECTRICAL WIRING DIAGRAM...
Page 122: ...III 79...
Page 146: ...MACHINE CONFIGURATION III 103...
Page 147: ...IV 1 IV HYDRAULIC UNITS...
Page 152: ...IV 6 HYDRAULIC UNITS HST PUMP 1 Plug 2 Plug 3 Plug 4 Screw 5 Seal Nut 6 Plug Pump Assembly 4 4...
Page 189: ...IV 43 HYDRAULIC UNITS GEAR PUMP INSPECTION AND ADJUSTMENT IV 36 38 TROUBLESHOOTING IV 39...
Page 230: ...IV 84 HYDRAULIC UNITS PILOT VALVE INSPECTION AND ADJUSTMENT IV 79 TROUBLESHOOTING IV 80...
Page 261: ...IV 115 HYDRAULIC UNITS TRAVEL MOTOR DISASSEMBLY AND ASSEMBLY Special tools...
Page 263: ...IV 117 HYDRAULIC UNITS TRAVEL MOTOR...
Page 282: ...IV 136 HYDRAULIC UNITS TRAVEL MOTOR...
Page 283: ...V 1 V TROUBLESHOOTING...