LGMG SR3369E User manual

Service Manual
SR3369E/SR4069E
Rough terrain Mobile
Elevating Work Platform
△! WARNING
Before operation and maintenance, the
drivers and maintenance personnel are
required to read this manual thoroughly.
Otherwise, fatal accident may occur. This
manual shall be kept properly for future
reference by the personnel concerned.
LINGONG HEAVY MACHINERY CO.，LTD.

Rough terrain Mobile Elevating Work Platform
Service Manual
880*1230 mm Sextodecimo 8 sheets
First edition, June 2022 First print, June 2022
LINGONG HEAVY MACHINERY CO., LTD.
Add.: 12F, Building 3, Lushang Olympic City, No. 9777, Jingshi Road, Lixia District, Jinan
City, Shandong Province, China
Tel: [phone] Technical service: 86-4009666569
Web: www.LGMG.com.cn Sales of accessories: 86-0531-67605016

Service Manual of Rough terrain
Mobile Elevating Work Platform
I
Contents
Contents...................................................................................................................................................................... I
Foreword.................................................................................................................................................................... V
Safety Notices............................................................................................................................................................ VI
ChapterⅠSafety and EnviroN•ment........................................................................................................................... 1
1.1 Terms and Definitions...............................................................................................................................................3
1.2 Compliance ...............................................................................................................................................................3
1.3 Before maintenance .................................................................................................................................................3
1.4 Workplace requirements ..........................................................................................................................................3
1.5 Safety precautions for maintenance and repair .......................................................................................................3
1.6 Intended use.............................................................................................................................................................4
1.7 Description................................................................................................................................................................ 4
ChapterⅡProduct Introduction.................................................................................................................................. 7
2.1 Machine parameters................................................................................................................................................. 9
2.1.1 SR3369E （ S33690DTAE30 ） Machine parameters ........................................................................................... 9
2.1.2 SR4069E （ S40690DTAE30 ） Machine parameters ......................................................................................... 10
2.2 Specification for selection of tightening torque of the lifting platform..................................................................11
2.3 Key component moment table........................................................................................................................... 13
ChapterⅢService.....................................................................................................................................................15
3.1 Platform..................................................................................................................................................................17
3.1.1 Removing the working platform...................................................................................................................... 18
3.1.2 Removing the extension platform.................................................................................................................... 18
3.1.3 Subassembling the extension platform............................................................................................................ 18
3.1.4 Main platform assembly.................................................................................................................................. 19
3.1.5 Folding the working platform guardrail....................................................................................................... 19
3.2 Platform control unit (PCU) ....................................................................................................................................20
3.2.1 Removing the platform control unit ................................................................................................................ 20
3.2.2 Assembling the platform control unit (PCU).................................................................................................... 21
3.3 The platform gate ...................................................................................................................................................21
3.3.1 Removing the semi-swing gate........................................................................................................................ 21
3.3.2 Installing the semi-swing gate......................................................................................................................... 21
3.4 Removing and installing the fork ............................................................................................................................22
3.4.1 Removing the fork (SR3369E) .......................................................................................................................... 22
3.4.2 Removing the fork (SR4069E) .......................................................................................................................... 27
3.4.3 Assembling the fork ......................................................................................................................................... 31
3.4.4 Replacing the fork slider at platform ........................................................................................................... 38
3.4.5 Replacing the fork slider at chassis.................................................................................................................. 38
3.5 Removing and installing wheels.............................................................................................................................. 39
3.5.1 Removing wheels............................................................................................................................................. 39

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3.5.2 Assembling wheels .......................................................................................................................................... 39
3.6 Front axle assembly............................................................................................................................................ 39
3.6.1 Installing the steering rod and steering cylinder ............................................................................................. 39
3.6.2 Removing the steering linkage and steering cylinder ...................................................................................... 40
3.6.3 Assembling the steering knuckle ..................................................................................................................... 40
3.6.4 Removing the steering knuckle........................................................................................................................ 40
3.6.5 Assembling the axle swing cylinder ................................................................................................................. 41
3.6.6 Removing the axle swing cylinder.................................................................................................................... 42
3.7 Rear axle assembly ................................................................................................................................................. 42
3.7.1 Assembling the reducer ................................................................................................................................... 42
3.7.2 Assembling the rear axle driving motor........................................................................................................... 42
3.7.3 Removing the rear axle assembly .................................................................................................................... 43
3.8 Outrigger assembly................................................................................................................................................. 43
3.8.1 Assembling the outrigger cylinder................................................................................................................... 43
3.8.2 Removing the outrigger cylinder ..................................................................................................................... 44
3.8.3 Assembling the level meter.............................................................................................................................. 44
3.8.4Assembling the outrigger weldment ................................................................................................................ 45
3.8.5 Assembling the outrigger cylinder................................................................................................................... 45
3.9 Other components............................................................................................................................................... 46
3.9.1 Assembling the double-pole main power isolation switch .............................................................................. 46
3.9.2 Assembling battery.......................................................................................................................................... 46
3.9.3 Assembling the DC contactor and converter.................................................................................................... 47
3.9.4 Assembling the charger and work indicator.................................................................................................... 47
3.10 Assembling the hydraulic oil tank ...................................................................................................................48
3.11 Valve group ........................................................................................................................................................50
3.11.1 Installing the spool ........................................................................................................................................ 50
3.11.2 Scissor fork platform control valve ................................................................................................................ 50
3.11.3 Lower lift cylinder control valve ST4639-AB0E(SR3369E) .............................................................................. 51
3.11.4 Upper cylinder valve block ST5243-AC0A (SR4069E) ..................................................................................... 52
3.11.5 Lower cylinder valve block ST5242-AC0C (SR4069E) ..................................................................................... 53
Chapter ⅣCommissioning ......................................................................................................................................55
4.1 Safety instructions .................................................................................................................................................. 57
4.2 Test of basic functions ............................................................................................................................................58
4.2.1 Pick-up inspection............................................................................................................................................ 58
4.2.2 Start/stop test.................................................................................................................................................. 58
4.2.3 Lifting/lowering function test .......................................................................................................................... 58
4.2.4 Steering test..................................................................................................................................................... 59
4.2.5 Horn test .......................................................................................................................................................... 59
4.2.6 Drive and brake function test .......................................................................................................................... 59
4.3 No-load test ............................................................................................................................................................59

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Mobile Elevating Work Platform
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4.3.1 Outrigger leveling test ..................................................................................................................................... 59
4.3.2 Fork and platform test ..................................................................................................................................... 60
4.4 Relief pressure test .................................................................................................................................................60
4.4.1 Lift relief pressure test ..................................................................................................................................... 60
4.4.2 Steering relief pressure test ............................................................................................................................. 60
4.5 Calibration test ....................................................................................................................................................... 61
4.5.1 Inclination calibration...................................................................................................................................... 61
4.5.2 Adjustment of level meter ............................................................................................................................... 61
4.6 Inclination test........................................................................................................................................................62
4.6.1 3°forward/backward inclination test.............................................................................................................. 62
4.6.2 2°leftward/rightward inclination test............................................................................................................. 62
4.7 Load calibration ......................................................................................................................................................62
4.7.1 No-load calibration.......................................................................................................................................... 62
4.7.2 Rated load calibration ..................................................................................................................................... 63
4.8 Overload function...................................................................................................................................................64
4.8.1 Overload function activation ........................................................................................................................... 64
4.8.2 Rated load verification .................................................................................................................................... 65
4.8.3 Test with 1.2 times rated load ......................................................................................................................... 65
4.8.4 Parameter setting............................................................................................................................................ 65
4.9 Load test .................................................................................................................................................................66
4.9.1 Rated load test................................................................................................................................................. 66
4.9.2 Load test (1.2 times rated load)....................................................................................................................... 66
4.10 Inspection of platform settlement (rated load)....................................................................................................66
4.11 No-load lifting time...............................................................................................................................................67
4.11.1 No-load lifting time test................................................................................................................................. 67
4.11.2 Adjustment of lifting speed............................................................................................................................ 67
4.11.3 Adjustment of lowering speed....................................................................................................................... 67
4.12 Lifting height test..................................................................................................................................................68
4.13 Emergency lowering test ......................................................................................................................................68
4.14 Speed parameter adjustment...............................................................................................................................68
4.14.1 High-speed driving......................................................................................................................................... 68
4.14.2 Low speed driving .......................................................................................................................................... 69
4.15 No-load braking distance test............................................................................................................................... 69
4.16 No-load lifting and walking speed test ................................................................................................................. 69
4.17 No-load lifting and walking speed parameter adjustment ...................................................................................70
4.18 Gradeability test and parking brake test (35%) ....................................................................................................70
4.19 Floating test.......................................................................................................................................................... 70
4.20 Outrigger limit test ...............................................................................................................................................70
4.21 Basic operation.................................................................................................................................................. 71
Chapter ⅤMaintenance .........................................................................................................................................73

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Mobile Elevating Work Platform
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5.1 Compliance..........................................................................................................................................................75
5.2 Checking the Safety Manual..............................................................................................................................75
5.3 Checking the labels and signs...........................................................................................................................75
5.4 Checking for damaged, loose or missing parts .............................................................................................. 75
5.5 Checking the wires.............................................................................................................................................. 76
5.6 Checking the battery...........................................................................................................................................76
5.7 Checking the electrical contactors.................................................................................................................... 77
5.8 Checking the tires and wheels ..........................................................................................................................77
5.9 Checking the hydraulic tank vent cap ..............................................................................................................77
5.10 Checking the leakage of hydraulic oil ............................................................................................................78
5.11 Checking the hydraulic filter.............................................................................................................................78
5.12 Replacing the hydraulic tank air filter............................................................................................................. 79
5.13 Checking the hydraulic oil level.......................................................................................................................79
5.14 Visual Inspection of the Hydraulic Oil ............................................................................................................79
5.15 Test or Replace the hydraulic oil..................................................................................................................... 79
5.16 Checking the oil level in the reducer ..............................................................................................................80
5.17 Replacing the reducer gear oil........................................................................................................................81
5.18 Checking or replacing the scissor arm slide block....................................................................................... 81
5.19 Regular maintenance ....................................................................................................................................... 81
Chapter ⅥAppendix...............................................................................................................................................83
6.1 Machine fault codes............................................................................................................................................ 85
6.2 Description of harness No. ................................................................................................................................86
6.2.1 Outrigger module harness............................................................................................................................... 86
6.2.2. Chassis harness............................................................................................................................................... 88
6.3 Electrical schematic diagram（SR3369E/SR4069E）......................................................................................90
6.4 Hydraulic schematic diagram..................................................................................................................................91
6.4.1 SR3369E Hydraulic schematic diagram ........................................................................................................... 91
6.4.2 SR4069E Hydraulic schematic diagram ........................................................................................................... 92
6.5 Diagram of common hydraulic part symbols...................................................................................................93
6.6 Diagram of common electrical part symbols.................................................................................................100

Service Manual of Rough terrain
Mobile Elevating Work Platform
V
Foreword
You are welcome to purchase and use the products produced by Lingong Heavy Machinery Co., Ltd.
This manual introduces the technical parameter and maintenance adjustment data of Rough terrain
mobile elevating work platform, and explains the troubleshooting and maintenance process for qualified
professional maintenance personnel. The information contained in this manual are correct at the time of
publication, but due to the continuous improvement of the structure and performance of our products, the
design as well as operation and maintenance instructions of the product may be subject to change
without notice. For the latest information about the machine and questions about this manual, please
contact our company. At the same time, we encourage readers to feedback errors to Lingong Group
Jinan Heavy Machinery Co., Ltd. and put forward suggestions for improvement. All suggestions will be
carefully considered in the future publication and printing of this manual.
The copyright of this manual belongs to Lingong Heavy Machinery Co., Ltd., and it is not allowed to
be copied or reprinted without the written permission of our company.
△!WARNING
Only specially trained and qualified personnel can operate, repair and maintain the
machine.
Incorrect operation, maintenance and repair are dangerous and can lead to personal
injury or death.
Before operating or maintaining the machine, the operator should read this manual
carefully. Do not operate, maintain or repair this platform without reading and
understanding this manual.
Please load the machine in strict accordance with the rating, otherwise all the
consequences arising from overloading or unauthorized modification will be borne by
the user.
The operating procedures and precautions provided in this manual are only
applicable to the specified purposes of this machine. If it is used for operations other
than those specified but not prohibited, make sure that this operation does not cause
harm to you or others.

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Mobile Elevating Work Platform
VI
Safety Notices
The operator should understand and follow the current national and local safety regulations. If there
are no national or local regulations, the safety instructions in this manual shall be applicable.
Most accidents are caused by failure to comply with the regulations on the operation and
maintenance of the machine. In order to avoid accidents, please read, understand and observe all
warning requirements and precautions in this manual and on the machine before operation and
maintenance. Failure to comply with the instructions and safety rules in this manual and the
corresponding manual on the machine will result in death or serious injury.
Since it is impossible to foresee all possible dangers, the safety instructions in this manual and on
the machine cannot include all safety precautions. If steps and operations not recommended in this
manual are used, you must ensure that you and other people are safe and the machine will not be
damaged. If you are not sure about the safety of some operations, please contact our company or
dealer.
Some operations to the machine require not only basic mechanical, hydraulic and electrical skills,
but also professional skills, tools, lifting equipment and suitable workshop. In these cases, we strongly
recommend that the maintenance and repair should be carried out at a service center authorized by
Lingong Heavy Machinery Co., Ltd.
The maintenance precautions given in this manual are only applicable when the machine is used for
the specified purpose. If the machine is used in the scope out of this manual, our company will not
assume any safety responsibility, and the safety responsibility in such operations shall be borne by the
user and the operator. Under no circumstances shall the operations prohibited in this manual be
performed.
Most of the maintenance process can only be performed by trained professional service personnel
in properly equipped workshops.
△!DANGER - Indicating any existing dangers that, if not avoided, will cause
serious injury or even death, and also serious machine damage.
△!WARNING - Indicating any potential dangers that, if not avoided, may cause
death or serious injury, and also serious machine damage.
△!CAUTION - Indicating situations that, if not avoided, may cause minor or
moderate injury, and also machine damage or shortened machine service life.

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Mobile Elevating Work Platform
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ChapterⅠSafety and EnviroN•ment

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Mobile Elevating Work Platform
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Mobile Elevating Work Platform
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1.1 Terms and Definitions
Administrator: the entity or individual that directly controls the use and application of the lifting platform,
which usually refers to the owner, the renter or the authorized personnel of owner who
obtains the control right of the lifting platform;
Operator: personnel who has been professionally trained and mastered qualified knowledge and
practical experience to operate the lifting platform.
Qualified personnel: those with recognized academic qualifications, certificates, professional status, or
relevant professional knowledge, trained and experienced, who can effectively prove their
ability to solve the difficulties encountered in related matters, work or projects.
Safety notice: relevant safety information issued by Lingong Heavy Machinery Co., Ltd.
1.2 Compliance
1. The maintenance is required to be carried out by personnel who have received and qualified in
the maintenance training of this machine.
2. Immediately mark the machine if it is damaged or faulty, and withdraw it out of service.
3. Repair any damage or fault before operating the machine.
1.3 Before maintenance
1. Read and follow the safety rules and maintenance instructions in the corresponding operation
manuals on the machine.
2. Ensure that all necessary tools and parts are in place.
3. Do not use parts not sold by Lingong Heavy Machinery Co., Ltd.
4. Please read each step thoroughly and follow the instructions, and do not try to perform repair by
shortcut, as this is dangerous.
1.4 Workplace requirements
The machine shall be able to operate safely under the following conditions:
1. Altitude ≤ 1000m/3281ft;
2. Ambient humidity ≤ 90% (at +25℃).
3. The machine shall be able to operate normally under the following safe conditions:
—Ambient temperature of -20℃~ +40℃;
—Wind speed: ≤ 12.5m/s/28mph.
4. During normal operation or maintenance, please set up protective devices as the movement of
mechanism and parts may cause danger to human body.
5. Take measures to prevent the danger caused by parts falling from the platform.
1.5 Safety precautions for maintenance and repair
1. Before adjusting and repairing the machine, the following preventive measures shall be taken
Park the machine on a solid and level ground
Block the wheels
Cut off the power supply to disable the machine;
Set all controls in “OFF” position to prevent the operating system from being started by

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Mobile Elevating Work Platform
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accident;
If possible, lower the platform to the lowest position, otherwise, ensure that it will not fall;
Before loosening or removing hydraulic components, release the hydraulic oil pressure in
the hydraulic pipeline;
Place safety supports as required.
2. Maintenance personnel training
Maintenance personnel must be trained by qualified personnel to inspect and maintain the
machine in accordance with the requirements of this manual.
3. Parts replacement
The replacement components and parts must be the original parts of our company, otherwise
the product will not be maintained or repaired.
4. Service announcement
Users shall maintain and repair the machine in strict accordance with the service announcement
issued by Lingong Heavy Machinery Co., Ltd.
1.6 Intended use
This machine is only intended for lifting people and their tools and materials to a high-altitude
workplace.
1.7 Description
Most maintenance processes can only be performed by professionally trained maintenance
personnel in a properly equipped workshop. After troubleshooting, select the appropriate maintenance
steps.
Perform the disassembly steps until the repair can be completed. Then perform the disassembly
steps in the reverse order.
It is strongly recommended to carry out maintenance and repair at the service center authorized by
Lingong Group Jinan Heavy Machinery Co., Ltd.
Symbol representation
Symbols, color codes and symbolic words used by LGMG products have the following meanings:
Safety warning sign - used for warning of potential personal injury. Observe all safety tips after
this sign to avoid possible personal injury or death.
Red - Indicating a hazardous situation. If it is not avoided, it will
lead to death or serious injury of personnel.
Orange - Indicating a hazardous situation. If it is not avoided, it
may cause death or serious injury.
DANGER
WARNING

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Mobile Elevating Work Platform
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Yellow - Indicating a dangerous situation. If not avoided, it may
cause minor or moderate personal injury.
Blue - Indicating a dangerous situation. If not avoided, it may
result in property damage.
CAUTION
NOTE

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Mobile Elevating Work Platform
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Mobile Elevating Work Platform
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ChapterⅡProduct Introduction

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Mobile Elevating Work Platform
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Mobile Elevating Work Platform
9
2.1 Machine parameters
2.1.1 SR3369E（S33690DTAE30）Machine parameters
1. Parameters of machine
Item
Parameter
Item
Parameter
Rated load (kg/lbs)
454/1000
Fork lifting time (s)
39±4
Extension platform rated load (kg/lbs)
140/310
Fork lowering time (s)
46±4
Total weight (kg/lbs)
4350/9570
Maximum manual force
Indoor (N)
400
Maximum number of operators (indoor)
4
Outdoor (N)
400
Maximum number of operators (outdoor)
2
Theoretical maximum gradeability (no-load,
stowed)
35%
Max. working height (m/ft)
11.7/38.4
Maximum allowable tilt
angle
X-direction:
left/right
2°
Max. platform height (m/ft)
9.7/31.8
Y-direction:
front/rear
3°
Min. turning radius (m/ft)
4.75/15.58
Maximum turning angle of inner wheel
45°
Max. travel speed (stowed) (km/h/mph)
6.1/3.78
Max. allowed wind speed (m/s/mph)
12.5/28
Max. travel speed (extended) (km/h/mph)
0.5/0.28
Drive mode
Rear-wheel
drive
Max. braking distance (no-load, stowed)
(m/ft)
1.5/4.9
Front wheel
steering
2. Main dimensions
Item
Parameter
Item
Parameter
Overall length (m/ft)
3.76/12.33
Platform extension
dimension (m/ft)
1.52/4.99
Overall width (m/ft)
1.79/5.87
Track width (mm/in)
2290/75.1
Overall height (guardrail
unfolded) (m/ft)
2.55/8.37
Wheelbase (front/rear)
(mm/in)
1507/49.4
Overall height (guardrail
folded) (m/ft)
1.89/6.2
Min. ground clearance
(mm/in)
230/9.06
Dimension of main platform
(m/ft)
2.79×1.6/9.15×5.25
Tire specification
(diameter×width) mm/in
Φ663×283/Φ26×12
3. Transmission system
Item
Parameter
Walking reducer
Rated output torque (N•m)
3500
Speed ratio
57.49：1
4. Hydraulic system
Item
Parameter
Functional
system
Type
Open
Pump displacement (ml/r)
4.5
Lifting
system
Max. working pressure
(MPa/psi)
19.7/2857
Steering
system
Max. working pressure
(MPa/psi)
10.3/1494
5. Electrical system
Item
Parameter
Motor
Rated voltage (V)
29
Rated current (A)
125
Rated power（KW）
3.56
Rated speed（r/min）
3400
Lifting motor
Rated voltage (V)
48
Rated current (A)
330
Rated power（KW）
8.9
Rated speed（r/min）
3290
Battery
Output voltage (V)
6
Capacity (Ah)
315(20-hour discharge rate)
Charger
Nominal AC input voltage (V)
85-265 AC
Maximum AC input current (A)
15
Nominal DC output voltage (V)
48
Maximum DC output current (A)
35
Control system
Voltage (V)
24

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6. Fluid filling amount
Item
Parameter
Item
Parameter
Hydraulic oil (L)
70
Travel reducer gear oil (L)
0.68×2
2.1.2 SR4069E（S40690DTAE30）Machine parameters
1. Parameters of machine
Item
Parameter
Item
Parameter
Rated load (kg/lbs)
365/805
Fork lifting time (s)
61±4
Extension platform rated load (kg/lbs)
140/310
Fork lowering time (s)
55±4
Total weight (kg/lbs)
5100/11245
Maximum
manual force
Indoor (N)
400
Maximum number of operators (indoor)
3
Outdoor (N)
400
Maximum number of operators (outdoor)
2
Theoretical maximum gradeability
(no-load, stowed)
35%
Max. working height (m/ft)
13.9/45.6
Maximum
allowable tilt
angle
X-direction: left/right
2°
Max. platform height (m/ft)
11.9/39
Y-direction: front/rear
3°
Min. turning radius (m/ft)
4.75/15.58
Maximum turning angle of inner wheel
45°
Max. travel speed (stowed) (km/h/mph)
6.1/3.78
Max. allowed wind speed (m/s/mph)
12.5/28
Max. travel speed (extended) (km/h/mph)
0.5/0.28
Drive mode
Rear-wheel
drive
Max. braking distance (no-load, stowed)
(m/ft)
1.5/4.9
Front wheel
steering
2. Main dimensions
Item
Parameter
Item
Parameter
Overall length (m/ft)
3.76/12.38
Platform extension dimension (m/ft)
1.52/4.99
Overall width (m/ft)
1.79/5.87
Track width (mm/in)
2290/75.1
Overall height (guardrail unfolded)
(m/ft)
2.7/8.86
Wheelbase (front/rear) (mm/in)
1507/49.4
Overall height (guardrail folded)
(m/ft)
2.04/6.69
Min. ground clearance (mm/in)
230/9.06
Dimension of main platform (m/ft)
2.79×1.60/9.15×5.25
Tire specification (diameter×width)
mm/in
Φ663×283/Φ26×12
3. Transmission system
Item
Parameter
Walking reducer
Rated output torque (N•m)
3500
Speed ratio
57.49：1
4. Hydraulic system
Item
Parameter
Functional
system
Type
Open
Pump displacement (ml/r)
4.5
Lifting
system
Max. working pressure
(MPa/psi)
19.7/2857
Steering
system
Max. working pressure
(MPa/psi)
10.3/1494
5. Electrical system
Item
Parameter
Motor
Rated voltage (V)
29
Rated current (A)
125
Rated power（KW）
3.56
Rated speed（r/min）
3400
Lifting motor
Rated voltage (V)
48
Rated current (A)
330
Rated power（KW）
8.9
Rated speed（r/min）
3290
Battery
Output voltage (V)
6
Capacity (Ah)
315(20-hour discharge rate)
Charger
Nominal AC input voltage (V)
85-265 AC
Maximum AC input current (A)
15
Nominal DC output voltage (V)
48
Maximum DC output current (A)
35
Control system
Voltage (V)
24

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Mobile Elevating Work Platform
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6. Fluid filling amount
Item
Parameter
Item
Parameter
Hydraulic oil (L)
70
Travel reducer gear oil (L)
0.68×2
2.2 Specification for selection of tightening torque of the lifting platform
The tightening torque tolerance range is 10% for all hydraulic seals, important transmission
connectors and key processes with defined torque tightening requirements, and 20% for non-essential
reference torques, which is to be rounded to the nearest integer when necessary.
Table 1: Tightening torque of metric/imperial-threaded fittings and plugs (unit: N•m)
Tightening torque of metric-threaded oil ports
Tightening torque of imperial-threaded oil ports
Pipe
diamete
r
Thread
specification
(mm)
Fitting type
Plug
Pipe
diameter
Thread
specificati
on (Inch)
Fitting type
Plug
Type
E
Type
F
VSTI-E
Type
E
Type
F
VSTI-ED
6L
M10X1.0
27
22
16
6L
G1/8A
22
16
16
8L
M12X1.5
37
32
27
8L
G1/4A
37
32
32
10L
M14X1.5
58
48
37
10L
G1/4A
37
32
/
12L
M16X1.5
75
58
58
12L
G3/8A
75
58
63
15L
M18X1.5
95
75
70
15L
G1/2A
120
95
85
18L
M22X1.5
140
115
95
18L
G1/2A
120
95
/
22L
M28X2.0
190
160
140
22L
G3/4A
190
160
140
28L
M33X2.0
325
220
235
28L
G1A
325
220
210
35L
M42X2.0
470
295
380
35L
G11/4A
470
315
470
42L
M48X2.0
565
380
/
42L
G11/4A
565
380
470
6S
M12X1.5
42
37
/
6S
G1/4A
42
37
/
8S
M14X1.5
53
48
/
8S
G1/4A
42
37
/
10S
M16X1.5
75
58
/
10S
G3/8A
85
63
/
12S
M18X1.5
95
75
/
12S
G3/8A
85
63
/
14S
M20X1.5
130
85
/
14S
G1/2A
120
95
/
16S
M22X1.5
140
105
/
16S
G1/2A
120
95
/
20S
M27X2.0
190
180
/
20S
G3/4A
190
160
/
25S
M33X2.0
325
325
/
25S
G1A
325
220
/
30S
M42X2.0
470
345
/
30S
G11/4A
470
315
/
38S
M48X2.0
565
440
/
38S
G11/2A
565
380
/
Table 2: tightening torque of UN-threaded fittings and plugs (unit: N•m)
Product Series
Thread UN/UNF
Non-directional assembly
torque N•m
Non-directional
assembly torque N•m
EO-L
7/16-20 UN(F)
23
18
1/2-20 UN(F)
28
28
9/16-18 UN(F)
34
34
3/4-16 UN(F)
60
55
7/8-14 UN(F)
115
80
1-1/16-12 UN(F)
140
100
1-5/16-12 UN(F)
210
150
1-5/8-12 UN(F)
290
290
1-7/8-12 UN(F)
325
325
EO-S
7/16-20 UN(F)
20
20
1/2-20 UN(F)
40
40
9/16-18 UN(F)
46
46
3/4-16 UN(F)
80
80
7/8-14 UN(F)
135
135
1-1/16-12 UN(F)
185
185
1-5/16-12 UN(F)
270
270
1-5/16-12 UN(F)
270
270
1-5/8-12 UN(F)
340
340
1-7/8-12 UN(F)
415
415

Service Manual of Rough terrain
Mobile Elevating Work Platform
12
Description:
1. Table 1 gives the torques for metric-threaded joints and inch-threaded joints, and Table 2 gives
the torques for UN-threaded joints, and for those torques, an error of +10% is allowed;
2. The torque values given in Table 1 and Table 2 are based on the condition that the connected
part is made of steel, and for connected part made of aluminum, the tightening torque equal to 60% of
the corresponding torque in Table 2 and Table 3 shall apply and shall be rounded to the nearest integer
after calculation;
3. For Parker joints, the torque is to be selected according to the name and specification, and for
ordinary joints, the torque is to be selected according to the thread specification.
For example:
1) GE 28 L M ED OMD A3C: GE for straight-through joint, 28 for pipe diameter, L for normal
pressure, M for metric thread, ED for E-type elastic seal, OMD for no nut sleeve, A3C for galvanizing;
According to the 28L M ED, the torque value can be selected from Table 1: 325N•m
2) GE O 22L R 3/4 OMDA3C: O represents the F-type 0-ring seal, R represents the inch thread,
and 3/4 represents the thread specification G3/4; According to O 22L R3/4, the torque value can be
selected from Table 2: 160N•m;
3) GE O 20 S R OMDCF: S represents the heavy pressure, and the torque value selected
according to O 20 S R is: 160 N•m;
Table 3: Tightening Torque of Metric-Threaded Swivel Nuts (unit: N•m)
Pipe
diameter
Thread
specifications
Tightening
torque
Pipe
diameter
Thread
specifications
Tightening torque
N▪m
06L
M12X1.5
16
06S
M14X1.5
27
08L
M14X1.5
22
08S
M16X1.5
42
10L
M16X1.5
32
10S
M18X1.5
53
12L
M18X1.5
42
12S
M20X1.5
63
15L
M22X1.5
58
14S
M22X1.5
80
18L
M26X1.5
90
16S
M24X1.5
85
22L
M30X2
115
20S
M30X2
125
28L
M36X2
135
25S
M36X2
180
35L
M45X2
220
30S
M45X2
260
42L
M52X2
345
38S
M52X2
370
Description:
1) For torques given in Table 3, an error of +10% is allowed;
2) The torque values given in Table 3 are based on the condition that the connected part is made
of steel, and for connected part made of aluminum, the tightening torque equal to 60% of the
corresponding torque in Table 1 shall apply and shall be rounded to the nearest integer after
calculation;
3) For Parker rubber hoses, right-angle joints and tee joints, the torque is to be selected according
to the name and specification, and for ordinary rubber hoses, right-angle joints and tee joints,
the torque is to be selected according to the thread specification.
For example:
1) F481 CACF 2815 16: F481 for crimping form and hose type, CACF for joint type at both ends,
CA for 24°conical swivel nut with O-ring, CF for 90°elbow of 24°conical swivel nut with O-ring,