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SECTION 4 - BOOM & PLATFORM
3121714
4-25
Installing Counterbalance Valve
Refer to Figure 4-9., Rotator Counterbalance Valve.
1.
Make sure the surface of the actuator is clean, free of any
contamination and foreign debris including old Loctite.
2.
Make sure the new valve has the O-rings in the counter-
bores of the valve to seal it to the actuator housing.
3.
The bolts that come with the valve are grade 8 bolts.
New bolts should be installed with a new valve. JLG
Threadlocker PN 0100011 should be applied to the
shank of the three bolts at the time of installation.
4.
Torque the 1/4-inch bolts 110 to 120 in. lbs. (12.4 to 13.5
Nm). Do not torque over 125 in. lbs. (14.1 Nm). Torque
the 5/16-inch bolts 140 in. lbs. (15.8 Nm). Do not torque
over 145 in. lbs. (16.3 Nm).
5.
Make sure the valve is seated against the housing valve
flat. If it is raised up on any side or corner, remove the
valve to determine what the obstruction is. If possible
test this using hydraulic hand pump or electric test.
Figure 4-9. Rotator Counterbalance Valve
Содержание E450A
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Страница 22: ...SECTION 1 SPECIFICATIONS 1 4 3121714 Figure 1 2 Maintenance Lubrication Diagram...
Страница 47: ...SECTION 3 CHASSIS TURNTABLE 3121714 3 7 RL 1 IGNITION RELAY RL 2 VOTE RELAY OPTIONAL INVERTER Figure 3 5 Relay...
Страница 49: ...SECTION 3 CHASSIS TURNTABLE 3121714 3 9 FC 4 IGNITION RELAY FUSE 20A Figure 3 7 Ignition Relay Fuse...
Страница 51: ...SECTION 3 CHASSIS TURNTABLE 3121714 3 11 1001116232 A Figure 3 9 Drive Limit Switch...
Страница 64: ...SECTION 3 CHASSIS TURNTABLE 3 24 3121714 1 0 Figure 3 18 Drive Hub Sheet 1 of 2...
Страница 76: ...SECTION 3 CHASSIS TURNTABLE 3 36 3121714 Figure 3 27 Swing Components...
Страница 96: ...SECTION 3 CHASSIS TURNTABLE 3 56 3121714 GENERATOR Figure 3 30 On Board Generator...
Страница 116: ...SECTION 3 CHASSIS TURNTABLE 3 76 3121714 NOTES...
Страница 127: ...SECTION 4 BOOM PLATFORM 3121714 4 11 Figure 4 5 Platform Components and Attaching Hardware M450A E450A...
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Страница 292: ...SECTION 5 BASIC HYDRAULIC INFORMATION SCHEMATICS 5 134 3121714 STEER RELIEF Figure 5 148 Steer Valve Pressure Adjustment...
Страница 293: ...SECTION 5 BASIC HYDRAULIC INFORMATION SCHEMATICS 3121714 5 135 STEER RELIEF Figure 5 149 Steer Valve Component...
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Страница 340: ...SECTION 6 JLG CONTROL SYSTEM 6 24 3121714 PLATFORM CONTROL MODULE Figure 6 7 Control Module Location Sheet 1 of 2...
Страница 343: ...SECTION 6 JLG CONTROL SYSTEM 3121714 6 27 CONNECTOR Figure 6 10 Power Module LH 1001192212 D...
Страница 344: ...SECTION 6 JLG CONTROL SYSTEM 6 28 3121714 Figure 6 11 Power Module RH CONNECTOR 1001178339 E...
Страница 380: ...SECTION 6 JLG CONTROL SYSTEM 6 64 3121714 14 Press ENTER If calibration is successful the screen will read...
Страница 413: ...SECTION 7 BASIC ELECTRICAL INFORMATION ELECTRICAL SCHEMATICS 3121714 7 11 Figure 7 13 Connector Installation...
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Страница 427: ...SECTION 7 BASIC ELECTRICAL INFORMATION ELECTRICAL SCHEMATICS 3121714 7 25 Figure 7 28 Main Valve Harness Sheet 2 of 3...
Страница 428: ...SECTION 7 BASIC ELECTRICAL INFORMATION ELECTRICAL SCHEMATICS 7 26 3121714 Figure 7 29 Main Valve Harness Sheet 3 of 3...
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Страница 431: ...SECTION 7 BASIC ELECTRICAL INFORMATION ELECTRICAL SCHEMATICS 3121714 7 29 Figure 7 31 Turntable Harness Sheet 2 of 3...
Страница 432: ...SECTION 7 BASIC ELECTRICAL INFORMATION ELECTRICAL SCHEMATICS 7 30 3121714 Figure 7 32 Turntable Harness Sheet 3 of 3...
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Страница 453: ...SECTION 7 BASIC ELECTRICAL INFORMATION ELECTRICAL SCHEMATICS 3121714 7 51 X506 Figure 7 50 SkyGuard Harness Sheet 2 of 2...
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