SECTION 5 - HYDRAULICS
3121259
– JLG Lift –
5-85
5.5
PRESSURE SETTING PROCEDURE
1.
P1 Main relief valve
This is a solenoid valve and relief valve all in one. The
relief portion is pre-set and non adjustable. The car-
tridge is located on the “T” port face of the valve block.
This cartridge is the solenoid valve located at the top on
that face. To check, install a pressure gauge at port “M1”.
Activate lower lift up. At the end of stroke, the pressure
read should be 2500 psi, +/- 150 psi. If the boom cannot
be raised to full extension, remove the hose from port
“#6”. Plug and cap. This is non adjustable, so if the setting
is not correct the valve cartridge will need replaced.
2.
P2 Main relief valve
This is a solenoid valve and relief valve all in one. The
relief portion is pre-set and non adjustable. The car-
tridge is located on the tank port face of the valve block.
This cartridge is the solenoid valve located just above
the “T” port. To check, install a pressure gauge at port
“M2”. Activate telescope in, or remove the hose from
port “P4”. Plug and cap. The pressure read should be
3000 psi, +/- 150. This is non adjustable, so if the setting
is not correct the valve cartridge will need replaced.
3.
Swing relief valve
The swing relief valve is adjustable and is located on the
“T” port face of the valve block. The relief valve is located
right next to the “T” port. To check, install a pressure
gauge at port “MS”. Activate swing until the turn-table is
bottomed out at the stop. You can also remove the hose
from port “5”, plug and cap. Activate swing right. You
should read 1000 psi +/-100. To increase, turn clockwise.
To decrease, turn counter-clockwise.
4.
Steer relief valve
The steer relief valve is adjustable and is located on the
“T” port face of the valve block. The steer relief valve is
located right next to the swing relief valve. To check,
install a pressure gauge at port “M2”. Activate steer right.
You should read 2500 psi +/-100. To increase, turn clock-
wise. To decrease, turn counter-clockwise.
5.
Platform level up relief valve
This relief valve is adjustable and is located on the valve
manifold inside the tower upright boom. Install a pres-
sure gauge at port “M1” of this valve. Remove the hose
from port L1 located on the bottom of the valve. Plug
and cap. The relief valve is located above port “T2”. Acti-
vate level up. The pressure read should be 2800 psi +/-
100. To increase, turn clockwise. To decrease, turn coun-
ter-clockwise. Re-hose port L1.
6.
Platform level down relief valve
This relief valve is adjustable and is located on the valve
manifold inside the tower upright boom. Install a pres-
sure gauge at port “M2” of this valve. The relief valve is
located above port “P2”. Activate level down. The pres-
sure read should be 1400 psi +/-100. To increase, turn
clockwise. To decrease, turn counter-clockwise.
5.6
OIL SAMPLING
See Figure 5-40., Oil Sampling Port.
This machine is equipped with an oil sampling valve to
allow for verification of hydraulic oil condition.
Procedure
1.
Function the machine for approximately 15 minutes
operating all functions.
2.
Switch the select switch to the ground controls and start
the engine.
3.
Locate the oil sampling valve on the front of the main
control valve.
4.
Unscrew the knurled end which is attached to the chain.
5.
Place a drip pan under the spout and push in for approx-
imately 10 seconds. This should flush out the valve.
6.
Open and place the sample bottle under the spout.
7.
Push in on the end of the valve and fill up the bottle.
8.
Cap the bottle immediately.
9.
Thread the knurled cap back onto the valve.
10.
The sample is complete.
Содержание 340AJ
Страница 1: ...Service and Maintenance Manual Model 340AJ P N 3121259 June 27 2017...
Страница 2: ......
Страница 10: ...vi JLG Lift 3121259 TABLE OF CONTENTS SECTION NO TITLE PAGE NO Thispageleftblankintentionally...
Страница 15: ...3121259 JLG Lift xi LIST OF FIGURES FIGURE NO TITLE PAGE NO Thispageleftblankintentionally...
Страница 18: ...xiv JLG Lift 3121259 LIST OF TABLES TABLE NO TITLE PAGE NO Thispageleftblankintentionally...
Страница 42: ...SECTION 2 GENERAL 2 12 JLG Lift 3121259 NOTES...
Страница 69: ...SECTION 3 CHASSIS TURNTABLE 3121259 JLG Lift 3 27 Figure 3 24 Bearing Pressing Tool...
Страница 71: ...SECTION 3 CHASSIS TURNTABLE 3121259 JLG Lift 3 29 Figure 3 27 Bearing Nut Wrench...
Страница 134: ...SECTION 3 CHASSIS TURNTABLE 3 92 JLG Lift 3121259 NOTES...
Страница 157: ...SECTION 4 BOOM PLATFORM 3121259 JLG Lift 4 23 Figure 4 8 Rotator Counterbalance Valve...
Страница 218: ...SECTION 5 HYDRAULICS 5 58 JLG Lift 3121259 Figure 5 32 Fasteners and Plugs Sheet 1 of 2...
Страница 219: ...SECTION 5 HYDRAULICS 3121259 JLG Lift 5 59 Figure 5 33 Fasteners and Plugs Sheet 2 of 2...
Страница 236: ...SECTION 5 HYDRAULICS 5 76 JLG Lift 3121259 Figure 5 39 Gear Pump Cutaway...
Страница 246: ...SECTION 5 HYDRAULICS 5 86 JLG Lift 3121259 Figure 5 40 Oil Sampling Port...
Страница 255: ...SECTION 6 JLG CONTROL SYSTEM 3121259 JLG Lift 6 9 PLATFORM MODULE GROUND MODULE Figure 6 2 Control Module Location...
Страница 256: ...SECTION 6 JLG CONTROL SYSTEM 6 10 JLG Lift 3121259 Figure 6 3 Ground Module Sheet 1 of 4...
Страница 267: ...SECTION 6 JLG CONTROL SYSTEM 3121259 JLG Lift 6 21 Figure 6 10 Analyzer Diagnostics Menu Sheet 1 of 4...
Страница 268: ...SECTION 6 JLG CONTROL SYSTEM 6 22 JLG Lift 3121259 Figure 6 11 Analyzer Diagnostics Menu Sheet 2 of 4...
Страница 269: ...SECTION 6 JLG CONTROL SYSTEM 3121259 JLG Lift 6 23 Figure 6 12 Analyzer Diagnostics Menu Sheet 3 of 4...
Страница 270: ...SECTION 6 JLG CONTROL SYSTEM 6 24 JLG Lift 3121259 Figure 6 13 Analyzer Diagnostics Menu Sheet 4 of 4...
Страница 271: ...SECTION 6 JLG CONTROL SYSTEM 3121259 JLG Lift 6 25 Figure 6 14 Analyzer Personalities Menu Sheet 1 of 2...
Страница 272: ...SECTION 6 JLG CONTROL SYSTEM 6 26 JLG Lift 3121259 Figure 6 15 Analyzer Personalities Menu Sheet 2 of 2...
Страница 273: ...SECTION 6 JLG CONTROL SYSTEM 3121259 JLG Lift 6 27 Figure 6 16 Analyzer Machine Setup Menu...
Страница 274: ...SECTION 6 JLG CONTROL SYSTEM 6 28 JLG Lift 3121259 Figure 6 17 Analyzer Calibrations Menu...
Страница 289: ...SECTION 6 JLG CONTROL SYSTEM 3121259 JLG Lift 6 43 14 Press ENTER If calibration is successful the screen will read...
Страница 336: ...SECTION 6 JLG CONTROL SYSTEM 6 90 JLG Lift 3121259 NOTES...
Страница 346: ...SECTION 7 BASIC ELECTRICAL INFORMATION SCHEMATICS 7 10 JLG Lift 3121259 Figure 7 13 Connector Installation...
Страница 365: ...SECTION 7 BASIC ELECTRICAL INFORMATION SCHEMATICS 3121259 JLG Lift 7 29 This page left blank intentionally...
Страница 368: ...SECTION 7 BASIC ELECTRICAL INFORMATION SCHEMATICS 7 32 JLG Lift 3121259 NOTES...
Страница 369: ......