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IV-15
HYDRAULIC UNITS
HST PUMP
22. Disassemble the servo piston.
The servo piston should not be disassem-
bled unless required for cleaning up foreign
matter or replacing damaged components.
a. Remove the piston rings (21) from the servo
piston (20).
b. Remove the nuts (49 and 50) from the tie bolt
(16).
c. Attach the nut (49) to the tie bolt (16), and
tighten the nut (49) manually to compress the
spring.
• Hold the tie bolt by an cap wrench to pre-
vent it from turning.
• Tighten the nut until no load is applied to
the snap ring (48).
d. Remove the snap ring (48).
e. Remove the spring assembly.
f. Remove the nut (49).
g. Remove the spring guide (51), the spring
(52), and the spring guide (53) from the tie
bolt (16).
Valves
1. Remove the charge check and high pressure re-
lief valve.
a. Remove the valve seat plugs (1) from the
pump housing.
b. Remove the check poppet or relief valve as-
semblies (2) from the pump housing.
• The smaller end of each conical spring (3)
is crimped to retain it on the check poppet
or relief valve. Do not remove.
S3F318
16
48
20
49
50
21
21
S3F319
49
16
48
S3F320
16
51
52
53
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...