Genie GS-2669 IC Installation and operating manual

Service and Repair Manual
Serial Number Range
GS™-2669 IC
from GS69F-
18000
from GS69M-101
This manual includes:
Repair procedures
Fault Codes
Electrical and
Hydraulic
Schematics
GS™-3369 IC
GS™-4069 IC
For detailed maintenance
procedures, refer to the
appropriate Maintenance
Manual for your machine.
Part No. 1306516GT
Rev A
1
May 2022

Service and Repair Manual May 2022
Introduction
ii GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Intro ductio n Intro ductio n
Important
Read, understand and obey the safety rules and
operating instructions in the appropriate Operator's
Manual on your machine before attempting any
procedure.
This manual provides troubleshooting and repair
procedures for qualified service professionals.
Basic mechanical, hydraulic and electrical skills
are required to perform most procedures.
However, several procedures require specialized
skills, tools, lifting equipment and a suitable
workshop. In these instances, we strongly
recommend that maintenance and repair be
performed at an authorized Genie dealer service
center.
Compliance
Machine Classification
Group A/Type 3 as defined by ISO 16368
Machine Design Life
Unrestricted with proper operation, inspection and
scheduled maintenance.
Technical Publications
Genie has endeavored to deliver the highest
degree of accuracy possible. However, continuous
improvement of our products is a Genie policy.
Therefore, product specifications are subject to
change without notice.
Readers are encouraged to notify Genie of errors
and send in suggestions for improvement. All
communications will be carefully considered for
future printings of this and all other manuals.
Contact Us:
Internet: www.genielift.com
E-mail: [e-mail]
Find a Manual for this Model
Go to http://www.genielift.com
Use the links to locate Service Manuals,
Maintenance Manuals, Service and Repair
Manuals, Parts Manuals and Operator's Manuals.
Copyright © 2020 by Terex Corporation
1306516GT Rev A, May 2021
Second Edition, First Printing
Genie is a registered trademark of Terex South Dakota, Inc. in
the U.S.A. and many other countries.
“GS” is a trademark of Terex South Dakota, Inc.

May 2022 Service and Repair Manual
Introduction
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT iii
Revision History
Revision Date Section Procedure / Page / Description
A 5/2021 Initial Release
A
1 5/2022 Fault Codes Platform Overload Fault Codes
Reference Examples:
Electronic Version
Click on any content or procedure in the Table of Contents to view
the update.
Section – Repair Procedure, 4-2
Section – Fault Codes, All charts
Section – Schematics, Legends and schematics

Service and Repair Manual May 2022
Introduction
iv GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Revision History (continued)
Revision Date Section Procedure / Page / Description
Reference Examples:
Electronic Version
Click on any content or procedure in the Table of Contents to view
the update.
Section – Repair Procedure, 4-2
Section – Fault Codes, All charts
Section – Schematics, Legends and schematics

May 2022 Service and Repair Manual
Introduction
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT v
Serial Number Legend
1 Model
2 Facility code
3 Sequence number
4 Serial label (located inside cover)
5 Serial number (stamped on chassis)

Service and Repair Manual May 2022
Safety Rules
vi GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Sec ti on 1 Safety Rul es
Danger
Failure to obey the instructions and safety rules in
this manual and the appropriate Operator's Manual
on your machine will result in death or serious
injury.
Many of the hazards identified in the operator's
manual are also safety hazards when
maintenance and repair procedures are
performed.
Do not modify or alter a MEWP without prior
written permission from the manufacturer.
Do Not Perform Maintenance
Unless:
You are trained and qualified to perform
maintenance on this machine.
You read, understand and obey:
•manufacturer's instructions and safety rules
•employer's safety rules and worksite
regulations
•applicable governmental regulations
You have the appropriate tools, lifting
equipment and a suitable workshop.

May 2022 Service and Repair Manual
Safety Rules
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT vii
Personal Safety
Any person working on or around a machine must
be aware of all known safety hazards. Personal
safety and the continued safe operation of the
machine should be your top priority.
Read each procedure thoroughly. This
manual and the decals on the machine,
use signal words to ident
ify the following:
Safety alert symbol
—used to
alert personnel to potential
personal injury hazards. Obey all
safety messages that follow this
symbol to avoid possible injury or
death.
Indicates a imminently hazardous
situation which, if not avoided,
will result in death or serious
injury.
Indicates a potentially hazardous
situation which, if not avoided,
could result in death or serious
injury.
Indicates a potentially hazardous
situation which, if not avoided,
may cause minor or
moderate
injury.
Indicates a potentially hazardous
situation which, if not avoided,
may result in property damage.
Be sure to wear protective eye wear and
other protective clothing if the situation
warrants it.
Be aware of potential crushing hazards
such as moving parts, free swinging or
unsecured components when lifting or
placing loads. Always wear approved
steel
-toed shoes.
Workplace Safety
Any person working on or around a machine must
be aware of all known safety hazards. Personal
safety and the continued safe operation of the
machine should be your top priority.
Be sure to keep sparks, flames and
lighted tobacco away from flammable and
combustible materials like battery gases
and engine fuels. Always have an
approved fire ext
inguisher within easy
reach.
Be sure that all tools and working areas
are properly maintained and ready for
use. Keep work surfaces clean and free
of debris that could get into machine
components and cause damage.
Be sure any forklift, overhead crane or
other lifting or supporting device is fully
capable of supporting and stabilizing the
weight to be lifted. Use only chains or
straps that are in good condition and of
ample capacity.
Be sure that fasteners intended for one
time use (i.
e., cotter pins and self-locking
nuts) are not reused. These components
may fail if they are used a second time.
Be sure to properly dispose of old oil or
other fluids. Use an approved container.
Please be environmentally safe.
Be sure that your
workshop or work area
is properly ventilated and well lit.

May 2022
Table of Contents
viii GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Introduction Introduction...................................................................................................... ii
Important Information ..........................................................................................ii
Find a Manual for this Model ...............................................................................ii
Revision History .................................................................................................iii
Serial Number Legend ....................................................................................... v
Section 1 Safety Rules .................................................................................................... vi
General Safety Rules .........................................................................................vi
Section 2 Specifications................................................................................................... 1
Machine Specifications....................................................................................... 1
Performance Specifications................................................................................ 2
Hydraulic Oil Specifications ................................................................................ 2
Hydraulic Component Specifications .................................................................. 6
Manifold Component Specifications.................................................................... 6
Machine Component Weights............................................................................. 7
GM Engine Models............................................................................................. 7
Kubota D1105-E3B Engine Specifications .......................................................... 8
Kubota WG-972 Engine Specifications ............................................................... 9
Perkins 403D-11 Engine Specifications ............................................................ 10
Hydraulic Hose and Fitting Torque Specifications............................................. 11
Torque Procedure ............................................................................................ 12

May 2022
Table of Contents
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT ix
Section 3 Repair Procedures..........................................................................................14
Introduction ......................................................................................................14
Platform Controls ...........................................................................................16
1-1 Circuit Board ..............................................................................................16
Platform Components ....................................................................................17
2-1 Platform......................................................................................................17
2-2 Platform Extension Deck ............................................................................18
Scissor Components......................................................................................20
3-1 Scissor Assembly, GS-2669 RT..................................................................21
3-2 Scissor Assembly, GS-3369 RT..................................................................24
3-3 Scissor Assembly, GS-4069 RT..................................................................28
3-4 Wear Pads .................................................................................................31
3-5 Lift Cylinders ..............................................................................................33
3-6 Height Angle Sensor...................................................................................35
How to Replace the Height Angle Sensor ....................................................35

May 2022
Table of Contents
x GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Kubota D1105 Engine .................................................................................... 36
4-1 Timing Adjustment ..................................................................................... 36
4-2 Glow Plugs................................................................................................. 36
4-3 Engine RPM............................................................................................... 37
4-4 Flex Plate................................................................................................... 38
How to Remove the Flex Plate .................................................................... 38
How to Install the Flex Plate........................................................................ 38
4-5 Coolant Temperature and Oil Pressure Switches........................................ 39
4-6 How to Repair the Kubota D1105 Engine ................................................... 40
Kubota WG972 Engine................................................................................... 41
5-1 Timing Adjustment ..................................................................................... 41
5-2 Carburetor Adjustment ............................................................................... 41
5-3 Choke Adjustment...................................................................................... 41
5-4 Flex Plate................................................................................................... 41
5-5 Coolant Temperature and Oil Pressure Switches........................................ 41
5-6 Engine RPM............................................................................................... 42
5-7 How to Repair the Kubota WG972 Engine.................................................. 43
Perkins 403D-11 Engine................................................................................. 44
6-1 Timing Adjustment ..................................................................................... 44
6-2 Flex Plate................................................................................................... 44
6-3 Coolant Temperature and Oil Pressure Switches........................................ 44
6-4 Engine RPM............................................................................................... 45
6-5 How to Repair the Perkins 403D-11 Engine................................................ 46

May 2022
Table of Contents
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT xi
GM .998L Engine ............................................................................................47
7-1 Timing Adjustment.................................................................................47
7-2 Flex Plate ...................................................................................................47
How to Remove the Flex Plate.....................................................................47
How to Install the Flex Plate ........................................................................47
Ground Controls.............................................................................................48
8-1 Auxiliary Platform Lowering ........................................................................48
8-2 Function Speed Tuning...............................................................................48
How to Determine the Revision Level ..........................................................49
How to Adjust the Stowed Drive Speed........................................................49
How to Adjust the High Torque Drive Speed ................................................50
How to Adjust the Raised Drive Speed ........................................................51
How to Adjust the Lift Speed........................................................................52
8-3 Software Configuration ...............................................................................53
8-4 Level Sensor - Models without Outriggers...................................................55
8-5 Level Sensor - Models with Outriggers........................................................58
Hydraulic Pump ..............................................................................................62
9-1 Hydraulic Pump..........................................................................................62
How to Test the Hydraulic Pump..................................................................62
How to Remove the Hydraulic Pump............................................................62
How to Prime the Pump...............................................................................63

May 2022
Table of Contents
xii GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Manifolds........................................................................................................ 64
10-1 Function Manifold Components ................................................................ 64
10-2 Valve Adjustments - Function Manifold..................................................... 66
How to Adjust the System Relief Valve........................................................ 66
How to Adjust the Oscillate Relief Valve ...................................................... 67
How to Adjust the Platform Up Relief Valve -
Models with Platform Overload ............................................................ 68
10-3 Outrigger Manifold Components............................................................... 71
10-4 Traction Manifold Components - View 1 ................................................... 72
10-4 Traction Manifold Components - View 2 ................................................... 74
10-5 Generator Manifold Components.............................................................. 76
10-6 Valve Coils............................................................................................... 77
How to Test the Coils Using the Test System Function................................ 79
Fuel and Hydraulic Tanks.............................................................................. 80
11-1 Fuel Tank................................................................................................. 80
11-2 Hydraulic Tank ......................................................................................... 81

May 2022
Table of Contents
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT xiii
Steer Axle Components .................................................................................82
12-1 Yoke and Drive Motor...............................................................................82
How to Remove a Drive Motor.....................................................................83
12-2 Steer Cylinder...........................................................................................83
12-3 Tie Rod ....................................................................................................84
12-4 Oscillate Cylinder......................................................................................84
12-5 Oscillate Hoses ........................................................................................85
12-6 Oscillating Axle.........................................................................................87
Non-steer Axle Components..........................................................................88
13-1 Drive Motor / Brake Assembly...................................................................88
13-2 Drive Hub .................................................................................................89
Outrigger Components ..................................................................................90
14-1 Outrigger Cylinder ....................................................................................90
Platform Overload Components ....................................................................91
How to Calibrate the Platform Overload System...........................................91
15-2 Platform Overload Recovery Message......................................................93
15-3 Down Limit Height ....................................................................................94
How to Calibrate the Down Limit Height.......................................................94
Section 4 Fault Codes.....................................................................................................95
Introduction ......................................................................................................95
Control System Fault Codes..........................................................................97
Platform Overload Fault Codes....................................................................102
How to Retrieve Engine Fault - Codes GM .998L Models................................107

May 2022
Table of Contents
xiv GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Section 5 Schematics................................................................................................... 113
Introduction.................................................................................................... 113
Electrical Component and Wire Color Legends............................................... 114
Hydraulic Component Legend ........................................................................ 118
Electrical Symbols Legend ............................................................................. 120
Hydraulic Symbols Legend............................................................................. 121
Limit Switch Legend ....................................................................................... 122
Electronic Control Module Pin-Out Legend ..................................................... 123
Ground Control Box ....................................................................................... 125
Platform Control Box - All Models................................................................... 126
GM .998L Engine Fuse and Relay Layout ...................................................... 126
GM .998L Engine Wire Harness ..................................................................... 128
Control Panel Circuit Diagram ........................................................................ 129
Electrical Schematics – ANSI and CSA Models.......................................... 131
Electrical Schematic, GS-69 RT (ANSI / CSA) GM .998L Models ................. 132
Electrical Schematic, GS-69 RT (ANSI / CSA) GM .998L Models ................. 136
Electrical Schematic, GS-69 RT (ANSI / CSA) Diesel Models ......................... 137
Electrical Schematic, GS-69 RT (ANSI / CSA) Diesel Models ......................... 141
Electrical Schematics – AS and CE Models................................................ 143
Electrical Schematic, GS-69 RT (AS / CE) GM .998L Models....................... 144
Electrical Schematic, GS-69 RT (AS / CE) GM .998L Models....................... 148
Electrical Schematic, GS-69 RT (AS / CE) Diesel Models............................... 149
Electrical Schematic, GS-69 RT (AS / CE) Diesel Models............................... 153
Hydraulic Schematics - All Models.............................................................. 155
Hydraulic Schematic, GS-69 RT..................................................................... 156

May 2022 Service and Repair Manual
Specifications
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT 1
Sec ti on 2 Speci fic ati o ns
Machine Specifications
Fluid capacities
Hydraulic tank
(maximum fill capacity)
16.5 g
allons
62.5 l
iters
Hydraulic system (including tank)
18 g
allons
68.1 l
iters
Drive hub
EP 9
0 or SAE 90 multipurpose hypoid
gear oil API service classification GL5
24.5 o
unces
725 c
c
Fuel tank
10 g
allons
38 l
iters
Tires and wheels
Wheel lugs (steer end)
6 @ 1/2-
20
Lug nut torque, dry
Front
90 ft-
lbs
122 Nm
Lug nut torque, lubricated
Front
68 ft-
lbs
92
Nm
Wheel lugs (non
-steer end) 9 @ 5/8-
18
Lug nut torque, dry
Rear
170 ft-
lbs
230 Nm
Lug nut torque, lubricated
Rear
130 ft-
lbs
176 Nm
Castle nut (steer end)
Castle nut torque, dry
300 ft-
lbs
406 Nm
Castle nut torque, lubricated
225 ft-
lbs
305 Nm
Rough Terrain, foam
-filled
Tire size
26 x
12D380
Tire ply rating
6
Tire diameter
26 i
n
66 c
m
Tire width
12 i
n
30 c
m
Weight, each
177.5 l
bs
80.5 k
g
Non-marking, foam filled, RT
Tire size
26 x
12D380
Tire ply rating
6
Tire diameter
26 i
n
66 c
m
Tire width
12 i
n
30 c
m
Weight, each
177.5 l
bs
80.5 k
g
For operational specifications, refer to the
Operator's Manual.

Service and Repair Manual May 2022
Specifications
2 GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Performance Specifications
Drive speed, maximum
Platform stowed
High speed
3.5 m
ph
5.6 k
m/h
40 ft / 7.8 s
ec
12.2 m / 7.8 sec
Platform stowed
High torque
0.9 m
ph
1.4 k
m/h
40 ft / 30 s
ec
12.2 m / 30 s
ec
Platform raised
0.3 m
ph
0.48 k
m/h
40 ft / 91 s
ec
12.2 m / 91 s
ec
Braking distance, maximum
High range on paved
surface
less than 2 f
t
less than 0.6
m
Gradeability
See Operator's Manual
Function speed, maximum from platform controls
(with maximum rated load in platform)
GS
-2669 RT
Platform up
Platform down
29 to 39 s
econds
26 to 36 s
econds
GS-3369 RT
Platform up
Platform down
34 to 44 s
econds
24 to 34 s
econds
GS-4069 RT
Platform up
Platform down
56 to 66 s
econds
26 to 36 seconds
Outrigger leveling, maximum
Front
Back
Side to side
5.3°
4.2°
11.7°
Hydraulic Oil Specifications
Hydraulic Fluid Specifications
Genie specifications require hydraulic oils which are
designed to give maximum protection to hydraulic
systems, have the ability to perform over a wide
temperature range, and the viscosity index should
exceed 140. They should provide excell
ent antiwear,
oxidation prevention, corrosion inhibition, seal
conditioning, and foam and aeration suppression
properties.
Cleanliness level,
minimum
ISO 15/13
Water content,
maximum
250 p
pm
Recommended Hydraulic Fluid
Hydraulic oil type
Chevron
Rando HD Premium
Viscosity grade
32
Viscosity index
200
Optional Hydraulic Fluids
Mineral based
Shell Tellus S2 V 32
Shell Tellus S2 V 46
Shell Tellus S4 VX 32
Shell Donax TG (Dexron III)
Chevron 5606A
Biodegradable
Petro Canada Environ MV
46
Fire resistant
UCON Hydrolube HP-
5046
Note: Genie specifications require additional
equipment and special installation instructions for
the approved optional fluids. Consult Genie
Product Support before use.
Optional fluids may not have
the same hydraulic lifespan and
may result in component
damage.
Note: Extended machine operation can cause the
hydraulic fluid temperature to increase beyond its
maximum allowable range. If the hydraulic fluid
temperature consistently exceeds 200°F / 90°C an
optional oil cooler may be required.

May 2022 Service and Repair Manual
Specifications
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT 3
Do not top off with incompatible
hydraulic fluids. Hydraulic fluids
may be incompatible due to the
differences in base additive
chemistry. When incompatible
fluids are mixed, insoluble
materials may form and deposit
in the
hydraulic system,
plugging hydraulic lines, filters,
control valves and may result in
component damage.
Note: Do not operate the machine when the
ambient air temperature is consistently above
120°F / 49°C.
Hydraulic Fluid Temperature
Range
Ambient air temperature
1 Chevron hydraulic oil 5606A
2 Petro-Canada Environ MV 46
3 UCON Hydrolube HP-5046D
4 Chevron Rando HD premium oil MV
Chevron Rando HD Premium Oil
MV Fluid Properties
ISO Grade
32
Viscosity index
200
Kinematic Viscosity
cSt @ 200°F / 100°C
cSt @
104°F / 40°C
7.5
33.5
Brookfield Viscosity
cP @
-4°F / -20°C
cP @
-22°F / -30°C
1040
3310
Flash point
375°F / 190°C
Pour point
-58°F / -
50°C
Maximum continuous operating
temperature
171°F / 77°C
Note: A hydraulic oil heating system is
recommended when the ambient temperature is
consistently below 0°F / -18°C.
Note: Do not operate the machine when the
ambient temperature is below -20°F / -29°C with
Rando HD Premium MV.

Service and Repair Manual May 2022
Specifications
4 GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Chevron 5606A Hydraulic Oil
Fluid Properties
ISO Grade
15
Viscosit
y index
300
Kinematic Viscosity
cSt @ 200°F / 100°C
cSt @ 104°F / 40°C
cSt @
-40°F / -40°C
5.5
15.0
510
Flash point
180°F / 82°C
Pour point
-81°F / -63°C
Maximum continuous operating
temperature
124°F / 51°C
Note: Use of Chevron 5606A hydraulic fluid, or
equivalent, is required when ambient temperatures
are consistently below 0°F / -17°C unless an oil
heating system is used.
Continued use of Chevron
5606A hydraulic fluid, or
equivalent, when ambient
temperatures are
consistently
above 32°F / 0°C may result in
component damage
Petro-Canada Environ MV 46
Fluid Properties
ISO Grade
46
Viscosity index
154
Kinematic Viscosity
cSt @ 200°F / 100°C
cSt @ 104°F / 40°C
8.0
44.4
Flash point
482°F / 250°C
Pour point
-49°F / -
45°C
Maximum continuous operating
temperature
180°F / 82°C
Shell Tellus S4 VX Fluid
Properties
ISO Grade
32
Viscosity index
300
Kinematic Viscosity
cSt @ 200°F / 100°C
cSt @ 104°F / 40°C
9
33.8
Brookfield Viscosity
cSt @
-4°F / -20°C
cSt @
-13°F / -25°C
cSt @
-40°F / -40°C
481
702.4
2624
Flash point
>100
Pour point
-76°F / -60°C
Maximum continuous operating
temperature
103°F / 75°C

May 2022 Service and Repair Manual
Specifications
Part No. 1306516GT GS™-2669 RT • GS™-3369 RT • GS™-4069 RT 5
UCON Hydrolube HP-5046 Fluid
Properties
ISO Grade
46
Viscosity index
192
Kinematic Viscosity
cSt @
149°F / 65°C
cSt @ 104°F / 40°C
cSt @ 0°F /
-18°C
22
46
1300
Flash point
None
Pour point
-81°F / -63°C
Maximum continuous operating
temperature
189°F / 87°C

Service and Repair Manual May 2022
Specifications
6 GS™-2669 RT • GS™-3369 RT • GS™-4069 RT Part No. 1306516GT
Hydraulic Component
Specifications
Drive Pump
Type
gear pump
Displacement
per revolution
1.0 c
u in
16 c
c
Flow rate @ 310
0 rpm 13 g
pm
48 L/min
Hydraulic tank return filter
10 m
icron with
25 psi / 1.7 bar bypass
Function manifold
System relief valve pressure,
maximum
3500 p
si
241 b
ar
Lift relief valve pressure
GS-2669 RT
3100 p
si
214 bar
Lift relief valve pressure
GS
-3369 RT
2900 p
si
200 b
ar
Lift relief valve pressure
GS-4069 RT
2850 p
si
197 bar
Oscillate relief valve pressure
3300 p
si
228 b
ar
Steer flow regulator
2 g
pm
7.6 L/min
Lift /
Outrigger flow regulator 6 g
pm
23 L/min
Oscillate flow regulator
1 g
pm
4 L/min
Traction Manifold
Traction relief valve pressure
2500 psi
172 b
ar
Generator manifold
Relief valve pressure
2700 p
si
186 b
ar
Flow rate
7 g
pm
26 L/min
Drive motors
Displacement, fixed (steer end)
22.9 c
u in
375 c
c
Displacement, variable (non-steer
end)
0.54 - 1.53 cu in
8.8 - 25 c
c
Manifold Component
Specifications
Plug torque
SAE No. 2
36 in-
lbs / 4 Nm
SAE No. 4
10 ft-lbs / 13 Nm
SAE No. 6
14 ft-
lbs / 19 Nm
SAE No. 8
38 ft-
lbs / 51 Nm
SAE No.10
41 ft-
lbs / 55 Nm
SAE No. 12
56 ft-
lbs / 76 Nm