Jlg 601S Service Manual User Manual Page 103
- Page / 240
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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SECTION 3 - CHASSIS & TURNTABLE
3120866 – JLG Lift – 3-63
2. Incorrect Linkage - Re-check linkage as discussed
on page 40 and 41. Freedom of movement and lack
of play are important.
3. Incorrect Electrical Hook-up - Re-check all wiring
and connections to the Actuator and Controller
against the supplied schematic.
4. No speed signal to Controller.
a. Check the voltage between terminals C and
ground and D and ground of the 8 pin connector
with the engine running. You should see 5 - 30
VDC.
b. The above checks do not guarantee a good
speed signal, but their absence proves that
there is a problem.
5. Incorrect Electrical Hook-up - If steps 1 - 4 above
have not revealed the problem, the governor may
have been damaged, either in shipping or during
hook-up and test.
Governor reacts, but can’t be set up to give proper
performance.
This kind of trouble usually falls into three main catego-
ries:
1. Actual Governor malfunction.
2. Governor installation problems and improper instal-
lation.
3. Governor not tuned or adjusted for engine/applica-
tion.
NOTE: Assure the engine is operating properly by running
engine manually. The Governor will not control any
poor running engine.
1. Actual Governor Malfunction - The Governor was
engine-tested for proper operation just prior to being
shipped. Unless damaged in shipment or by
improper handing, it should be serviceable. To
check for proper operation proceed as follows:
a. Once again, disconnect fuel system linkage
from Governor output arm and control engine
manually.
b. Start engine, hold at a low speed, Governor arm
should move to full-fuel position.
c. Increase engine speed carefully. At some engine
speed, Governor arm should move to low-fuel
position.
d. By carefully varying engine speed, you should
be able to cause the Governor arm to pause
momentarily near the middle of its travel. This
engine speed is the speed for which the Gover
-
nor is adjusted. If grossly incorrect, reset High
Engine Pot.
e. With the engine running at low speed, move the
Governor arm throughout its stroke by hand.
You should feel a constant smooth force in the
on direction. No binding or rubbing should be
felt within the Governor.
If steps 1a. thru 1e. can be accomplished as described,
the Governor is probably OK. It recognizes underspeed,
overspeed, onspeed and is not binding internally.
If the above steps cannot be accomplished satisfactorily,
there is probably an actual Governor malfunction.
2. Installation and adjustment problems.
a. Governor is unable to move fuel system freely
(not enough Actuator force available). If Gover-
nor doesn’t move fuel system to on far enough
to provide sufficient fuel but Governor arm
moves far enough when disconnected look for:
1.Linkage binding or misadjusted.
2.Low voltage at Governor during operation.
*Measure the voltage as discussed previously
and observe voltage during operation. If Gover
-
nor fails to move full on and voltage dips over 1
volt, check for undersize wire (should be #16
minimum).
3.Excessive forces at Governor during running,
particularly on carburetor engines.
*Carburetor butterfly valves are loaded by
engine vacuum during running, which can add
considerable force not present when engine
isn’t running.
*Springs in the system; carburetor return
springs, acceleration pump springs, etc., are
not usually needed and can cause governing
problems.
- P/N - 3120866 1
- ADE System Identification 3
- – JLG Lift – 4
- PRECAUTIONS 5
- REVISON LOG 6
- (Continued) 10
- TABLE OF CONTENTS 11
- SECTION 1. SPECIFICATIONS 17
- 1-2 – JLG Lift – 3120866 18
- SECTION 1 - SPECIFICATIONS 19
- Te st N o tes 19
- 1.5 TORQUE REQUIREMENTS 19
- 1.6 LUBRICATION 20
- Ford LRG425 Engine 20
- Deutz F3M1011F Engine 20
- Hydraulic Oil 21
- Lubrication Specifications 21
- 1.7 PRESSURE SETTINGS 21
- 1.8 CYLINDER SPECIFICATIONS 22
- 1.9 MAJOR COMPONENT WEIGHTS 22
- 1.11 SERIAL NUMBER LOCATIONS 23
- SECTION 2. GENERAL 27
- 2-2 – JLG Lift – 3120866 28
- 3120866 – JLG Lift – 2-3 29
- 2-4 – JLG Lift – 3120866 30
- 3120866 – JLG Lift – 2-5 31
- 2-6 – JLG Lift – 3120866 32
- SECTION 2 - GENERAL 33
- 2.8 AMP CONNECTOR 33
- AMP Connectors 33
- Wedge Lock 35
- Service - Voltage Reading 35
- 3.1 TORQUE HUB, DRIVE 41
- 3-2 – JLG Lift – 3120866 42
- 3120866 – JLG Lift – 3-3 43
- 3120866 – JLG Lift – 3-5 45
- 3-6 – JLG Lift – 3120866 46
- 3120866 – JLG Lift – 3-7 47
- 3-8 – JLG Lift – 3120866 48
- 3120866 – JLG Lift – 3-9 49
- 3120866 – JLG Lift – 3-11 51
- 3.3 DRIVE BRAKE - AUSCO 52
- 3120866 – JLG Lift – 3-13 53
- 3.4 DRIVE BRAKE - MICO 54
- 3120866 – JLG Lift – 3-15 55
- Bleeding 56
- Spare Parts Kits 57
- 3-18 – JLG Lift – 3120866 58
- Disassembly and Assembly 59
- 3-20 – JLG Lift – 3120866 60
- 3120866 – JLG Lift – 3-21 61
- 3-22 – JLG Lift – 3120866 62
- Assembly Notes 63
- 3-24 – JLG Lift – 3120866 64
- Te st i n g a n d Se t u p 65
- 3.6 DRIVE MOTOR ADJUSTMENT 66
- Description 67
- Shaft Seal Replacement 67
- Loop Flushing Valve 68
- 3120866 – JLG Lift – 3-31 71
- 3-32 – JLG Lift – 3120866 72
- 3120866 – JLG Lift – 3-33 73
- Slipper retainer 75
- Ball guide 75
- 3120866 – JLG Lift – 3-37 77
- 3-38 – JLG Lift – 3120866 78
- 3120866 – JLG Lift – 3-39 79
- 3-40 – JLG Lift – 3120866 80
- Initial Start-up Procedures 81
- 3-42 – JLG Lift – 3120866 82
- PROCEDURE AND LOCKOUT TEST 83
- Lockout Cylinder Bleeding 83
- Oscillating Axle Lockout Test 83
- 3.10 STEER ADJUSTMENTS 84
- 3120866 – JLG Lift – 3-45 85
- .0015" Feeler Gauge 86
- 3120866 – JLG Lift – 3-47 87
- 3-48 – JLG Lift – 3120866 88
- Swing Bearing Torque Values 89
- 3.13 SWING BRAKE - AUSCO 89
- 3120866 – JLG Lift – 3-51 91
- 3.14 SWING MOTOR 92
- Reassembly 93
- Motor Timing 94
- 3120866 – JLG Lift – 3-55 95
- 3-56 – JLG Lift – 3120866 96
- 3120866 – JLG Lift – 3-57 97
- 3-58 – JLG Lift – 3120866 98
- Mounting-Controller 99
- 3-60 – JLG Lift – 3120866 100
- 3120866 – JLG Lift – 3-61 101
- Troubleshooting 102
- 3120866 – JLG Lift – 3-63 103
- 3.19 THROTTLE CHECKS AND 104
- ADJUSTMENTS - DEUTZ ENGINE 104
- (PRIOR TO S/N 61306) 104
- 3120866 – JLG Lift – 3-65 105
- Failure Modes 106
- 3120866 – JLG Lift – 3-67 107
- Checking the Ignition 108
- 3.22 CHECKING THE FUEL 109
- S/N 58209) 110
- Performing Diagnostics 110
- Engine Module and Sensors 111
- 3-72 – JLG Lift – 3120866 112
- 3120866 – JLG Lift – 3-73 113
- 3-74 – JLG Lift – 3120866 114
- 3120866 – JLG Lift – 3-75 115
- 3-76 – JLG Lift – 3120866 116
- 3120866 – JLG Lift – 3-77 117
- 3-78 – JLG Lift – 3120866 118
- 3120866 – JLG Lift – 3-79 119
- 3120866 – JLG Lift – 3-81 121
- 3120866 – JLG Lift – 3-83 123
- ENGINE MODULE INPUTS/OUTPUTS 123
- THROTTLE POSITION (TP) SENSOR 123
- USE OF CIRCUIT TESTING TOOLS 123
- 3-84 – JLG Lift – 3120866 124
- Fuel System 125
- 3-86 – JLG Lift – 3120866 126
- FUEL METERING SYSTEM PURPOSE 126
- 3-88 – JLG Lift – 3120866 128
- 3120866 – JLG Lift – 3-89 129
- ELECTRONIC IGNITION 129
- IGNITION COIL 129
- ENGINE MODULE (ECM OR EPM) 129
- 3-90 – JLG Lift – 3120866 130
- 4.1 BOOM MAINTENANCE 131
- Disassembly Boom Sections 132
- 3120866 – JLG Lift – 4-3 133
- 4-4 – JLG Lift – 3120866 134
- 3120866 – JLG Lift – 4-5 135
- 4-6 – JLG Lift – 3120866 136
- Inspection 137
- Assembly 138
- 3120866 – JLG Lift – 4-9 139
- Installation 140
- Torque Procedures 140
- 4.3 WEAR PADS 141
- Main Boom 141
- 4-12 – JLG Lift – 3120866 142
- ADJUSTMENT 143
- 4.6 ROTATOR - HELAC 144
- Disassembly 144
- 4-16 – JLG Lift – 3120866 146
- 3120866 – JLG Lift – 4-17 147
- Lift, Swing, and Drive Cards 148
- Flow Control Card 148
- 4.8 FOOT SWITCH ADJUSTMENT 149
- 4-20 – JLG Lift – 3120866 150
- SECTION 5. HYDRAULICS 151
- SECTION 5 - HYDRAULICS 152
- 5.4 CYLINDER REPAIR 152
- Cleaning and Inspection 154
- 5.5 CYLINDER REMOVAL AND 158
- INSTALLATION 158
- Boom Lift Cylinder Removal 159
- Inspections and Adjustments 163
- Minor Repair and Replacement 166
- Platform Level 170
- 4 Wheel Steer (If Equipped) 170
- 5-24 – JLG Lift – 3120866 174
- 6.1 INTRODUCTION 177
- 6-2 – JLG Lift – 3120866 178
- SYSTEM ANALYZER 179
- 6.3 USING THE ANALYZER 179
- 6-4 – JLG Lift – 3120866 180
- HAND HELD ANALYZER 181
- 6-6 – JLG Lift – 3120866 182
- 6.6 MACHINE SETUP 184
- 6.7 LEVEL VEHICLE DESCRIPTION 184
- 3120866 – JLG Lift – 6-9 185
- 6-10 – JLG Lift – 3120866 186
- 3120866 – JLG Lift – 6-11 187
- 6-12 – JLG Lift – 3120866 188
- 4150365 - 3 189
- 6-14 – JLG Lift – 3120866 190
- 3120866 – JLG Lift – 6-15 191
- 6-16 – JLG Lift – 3120866 192
- 3120866 – JLG Lift – 6-17 193
- 6-18 – JLG Lift – 3120866 194
- 3120866 – JLG Lift – 6-19 195
- 6-20 – JLG Lift – 3120866 196
- 3120866 – JLG Lift – 6-21 197
- 6-22 – JLG Lift – 3120866 198
- 3120866 – JLG Lift – 6-23 199
- 6-24 – JLG Lift – 3120866 200
- 3120866 – JLG Lift – 6-25 201
- 6-26 – JLG Lift – 3120866 202
- 3120866 – JLG Lift – 6-27 203
- 6-28 – JLG Lift – 3120866 204
- 3120866 – JLG Lift – 6-29 205
- 4150364 - 6 206
- 3120866 – JLG Lift – 6-31 207
- 6-32 – JLG Lift – 3120866 208
- 3120866 – JLG Lift – 6-33 209
- 6-34 – JLG Lift – 3120866 210
- 3120866 – JLG Lift – 6-35 211
- 6-36 – JLG Lift – 3120866 212
- STRUCTURE 213
- 6-38 – JLG Lift – 3120866 214
- 3120866 – JLG Lift – 6-39 215
- 6-40 – JLG Lift – 3120866 216
- 3120866 – JLG Lift – 6-41 217
- 6-42 – JLG Lift – 3120866 218
- SECTION 7. SCHEMATICS 219
- SECTION 7 - SCHEMATICS 220
- JLG Worldwide Locations 240
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