Terex Genie GRC-12 User manual

Service Manual
Serial Number Range
GRC™-12
from GRC11-1000
to GRC16P-
2369
from GRC16P-2370
to GRC16P-
4599
from GRCP-4600
to GRCP-
5999
Original Instructions
Part No. 1314708GT
Rev A
February 2022

Service Manual February 2022
Introduction
ii GRC™Part No. 1314708GT
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
maintenance procedure.
This manual provides detailed scheduled
maintenance information for the machine owner
and user. It also 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 © 2001 by Terex Corporation
1314708GT Rev A, February 2022
Third Edition, First Printing
Genie is a registered trademark of Terex South Dakota, Inc. in
the U.S.A. and many other countries.
“GRC” is a trademark of Terex South Dakota, Inc.

February 2022 Service Manual
Introduction
Part No. 1314708GT GRC™iii
Revision History
Revision Date Section Procedure / Page / Description
A 2/2022 Initial Release
Reference Examples:
Section – Maintenance, B-3
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 Manual February 2022
Safety Rules
4 GRC™Part No. 1314708GT
Serial Number Legend
To
August 31, 2016
1 Model
2 Model year
3 Facility code
4 Sequence number
5 Serial label (behind covers)
6 Serial number stamped on chassis
From September 1, 2016
1 Model
2 Facility code
3 Sequence number
4 Serial label (behind covers)
5 Serial number stamped on chassis

February 2022 Service Manual
Safety Rules
Part No. 1314708GT GRC™v
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.

Service Manual February 2022
Safety Rules
vi GRC™Part No. 1314708GT
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 identify
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 co
mponents
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 extinguisher 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 m
ay 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.

February 2022
Table of Contents
Part No. 1314708GT GRC™vii
Introduction Introduction ......................................................................................................ii
Important Information ......................................................................................... ii
Find a Manual for this Model............................................................................... ii
Revision History ................................................................................................ iii
Serial Number Legend........................................................................................4
Section 1 Safety Rules......................................................................................................v
General Safety Rules .........................................................................................v
Section 2 Specifications...................................................................................................1
Machine Specifications .......................................................................................1
Performance Specifications ................................................................................1
Hydraulic Component and Manifold Specifications..............................................2
Manifold Component Specifications ....................................................................2
Hydraulic Oil Specifications ................................................................................3
Hydraulic Hose and Fitting Torque Specifications ...............................................6
Torque Procedure ..............................................................................................7

February 2022
Table of Contents
viii GRC™Part No. 1314708GT
Section 3 Scheduled Maintenance Procedures .............................................................. 9
Introduction........................................................................................................ 9
Pre-Delivery Preparation Report....................................................................... 12
Maintenance Inspection Report ........................................................................ 13
Checklist A Procedures ................................................................................. 14
A-1 Perform 50 Hour Service ........................................................................... 14
A-2 Grease the Steer Yokes............................................................................. 14
Checklist B Procedures ................................................................................. 15
B-1 Inspect the Batteries .................................................................................. 15
B-2 Inspect the Electrical Wiring....................................................................... 18
B-3 Inspect the Electrical Contactor.................................................................. 18
B-4 Inspect the Voltage Inverter (if equipped) ................................................... 19
B-5 Test the Flashing Beacons......................................................................... 20
B-6 Test the Alarm Package (if equipped) ........................................................ 20
B-7 Inspect the Tires, Wheels and Castle Nut Torque....................................... 21
B-8 Test the Drive Brakes ................................................................................ 21
B-9 Test the Drive Speed – Stowed Position .................................................... 22
B-10 Test the Drive Speed - Raised Position.................................................... 22
B-11 Visual Inspection of the Hydraulic Oil ....................................................... 23
B-12 Inspect the Breather Cap ......................................................................... 24
Checklist C Procedures ................................................................................. 25
C-1 Repalce the Hydraulic Tank Breather Cap –
Models with Optional Hydraulic Oil............................................................ 25
Checklist D Procedures ................................................................................. 26
D-1 Replace the Hydraulic Return Filter ........................................................... 26
Checklist E Procedures ................................................................................. 27
E-1 Test or Replace the Hydraulic Oil............................................................... 27

February 2022
Table of Contents
Part No. 1314708GT GRC™ix
Section 4 Repair Procedures..........................................................................................29
Introduction ......................................................................................................29
Platform Controls ...........................................................................................31
1-1 Circuit Board ..............................................................................................32
1-2 Joystick ......................................................................................................33
1-3 Platfrom Controls Alarm..............................................................................34
1-4 Platform Emergency Stop Button................................................................34
Ground Controls.............................................................................................35
2-1 Software Revision Level .............................................................................36
2-2 Machine Setup ...........................................................................................37
2-3 Level Sensor ..............................................................................................38
Hydraulic Pump ..............................................................................................41
3-1 Hydraulic Pump ..........................................................................................41
How to Remove the Hydraulic Pump............................................................42
Function Manifold...........................................................................................43
4-1 Function Manifold Components ..................................................................43
4-2 Valve Adjustments – Function Manifold ......................................................45
4-3 Valve Coils .................................................................................................48
Brake Release Hand Pump Components ......................................................50
5-1 Brake Release Hand Pump Components....................................................50
Hydraulic Tank................................................................................................51
6-1 Hydraulic Tank ...........................................................................................51
Non-Steer Axle Components .........................................................................52
7-1 Drive Brake ................................................................................................52
Steer Axle Components .................................................................................53
8-1 Yoke and Drive Motor.................................................................................53
8-2 Steer Cylinder ............................................................................................54
8-3 Tie Rod ......................................................................................................55

February 2022
Table of Contents
x GRC™Part No. 1314708GT
Platform Components.................................................................................... 56
9-1 Platform ..................................................................................................... 56
9-2 Platform Extension Deck ............................................................................ 57
How to Remove the Platform Extension Deck, GRC Models........................ 57
Mast Components.......................................................................................... 58
10-1 Mast......................................................................................................... 58
How to Remove the Mast Assembly............................................................ 58
How to Disassemble the Mast ..................................................................... 60
How to Assemble the Mast.......................................................................... 64
10-2 Wear Pads............................................................................................... 70
10-3 Lift Cylinders ............................................................................................ 70
How to Remove the Lift Cylinder ................................................................. 70
10-4 Lift Cylinder Wear Block ........................................................................... 73
10-5 Mast Coil Cord ......................................................................................... 73
Battery Charger.............................................................................................. 74
11-1 Battery Charger........................................................................................ 74
Selecting a Charge Profile........................................................................... 75
Batteries ......................................................................................................... 76
12-1 How to Remove the Batteries ................................................................... 76

February 2022
Table of Contents
Part No. 1314708GT GRC™xi
Section 5 Diagnostics.....................................................................................................77
Introduction ......................................................................................................77
GCON I/O MAP................................................................................................79
Operation Indicator Codes (OIC) ......................................................................80
Diagnostic Trouble Codes (DTC) ......................................................................80
Troubleshooting "HXXX" and "PXXX" Faults.....................................................81
Fault Inspection Procedure ...............................................................................82
Type "HXXX" Faults .........................................................................................84
Type "PXXX" Faults..........................................................................................85
Type "UXXX" Faults .........................................................................................86
Type "FXXX" Faults..........................................................................................87
Type "CXXX" Faults .........................................................................................88
Battery Charger................................................................................................90
Charger Fault Codes ...................................................................................91
Charger Error Codes ...................................................................................92

February 2022
Table of Contents
xii GRC™Part No. 1314708GT
Section 6 Schematics..................................................................................................... 96
Introduction...................................................................................................... 96
Electrical Component and Wire Color Legends................................................. 97
Wiring Diagram Ground and Platform Controls................................................. 98
Electrical Symbol Legend................................................................................. 99
Hydraulic Symbols Legend............................................................................. 100
Electrical Schematics – Options ................................................................. 101
Electrical Schematic, GRC - Options .............................................................. 102
Electrical Schematics .................................................................................. 103
Electrical Schematic, GRC (from GRC11-1000 to GRC11-1078) .................... 104
Electrical Schematic, GRC (from GRC11-1079 to GRC14-1780) .................... 108
Electrical Schematic, GRC (from GRC14-1781 to GRC15-2343) .................... 112
Electrical Schematics, GRC (from GRC15-2344 to GRC16P-2481) ................ 113
Electrical Schematic, GRC (from GRC16P-2482 to GRC16P-2562)................ 116
Electrical Schematic, GRC (from GRC16P-2563 to GRCP-5999) ................... 117
Hydraulic Schematics.................................................................................. 119
Hydraulic Schematic, GRC (from GRC11-1000 to GRC12-1168) ................ 120
Hydraulic Schematic, GRC (from GRC12-1169 to GRCP-5999).................. 121

February 2022 Service Manual
Specifications
Part No. 1314708GT GRC™1
Sec ti on 2 Speci fic ati o ns
Machine Specifications
Batteries, Standard
Voltage
6V DC
Group
GC2
Type
T-105
Quantity
4
Battery capacity, maximum
225AH
Reserve capacity @ 25A rate
447 m
inutes
Weight, each
62
lbs
28 kg
Batteries, Maintenance-free (option)
Voltage
6V
DC
Group
GC2
Type
6V-
AGM
Quantity
4
Battery
capacity, maximum
200AH
Reserve capacity @ 25A rate
385 m
inutes
Weight, each
65
lbs
29
kg
DC Motor
Voltage
24V
Horsepower
4.5 HP @ 2950 r
pm
Kilowatts
3.3 kW @ 2950 r
pm
Fluid capacities
Hydraulic tank
1.5 g
allons
5,7 l
iters
Hydraulic system
(including tank) 2.2 g
allons
8,3 l
iters
Tires and wheels
Tire size (solid rubber)
10 x 3 i
n
25,4 x 7,62 c
m
Castle nut torque, lubricated
150 ft-
lbs
203 Nm
Performance Specifications
Drive speed, maximum
Platform
stowed, fast 2.5 m
ph
40 ft / 10.9 s
ec
4 k
m/h
12,2 m / 10,9 sec
Platform stowed, slow
1.1 m
ph
40 ft / 24.8 s
ec
1,8 k
m/h
12,2 m / 24,8 s
ec
Platform raised
0.5 m
ph
40 ft / 55 s
ec
0,8 k
m/h
12,2 m / 55 s
ec
Braking distance, maximum
High range on paved
surface 19 in ± 6 i
n
48 cm ± 15 c
m
Gradeability
See Operator's Manual
Function speed, maximum from platform controls
(with
1 person in platform)
Platform up (fast mode)
Platform up (slow mode)
Platform down
10 to 14 s
econds
34 to 36 s
econds
14 to 18 s
econds
Rated work load at full height, maximum
Platform
500
lbs
227
kg
For operational specifications, refer to the
Operator's Manual.

Service Manual February 2022
Specifications
2 GRC™Part No. 1314708GT
Hydraulic Component
Specifications
Function Pump
Type
gear pump
Displacement per revolution
0.244 c
u in
4 c
c
Flow rate @ 250
0 psi / 172 bar 4 g
pm
15 L/min
Hydraulic tank return filter
10 m
icron with
25 psi / 1,7 b
ar
bypass
Function manifold
System relief valve pressure,
maximum
3500 p
si
241 b
ar
Lift relief
valve pressure 1800 to 3500 p
si
124 to 241 bar
Steer relief valve pressure
1500 p
si
103 b
ar
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

February 2022 Service Manual
Specifications
Part No. 1314708GT GRC™3
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 excellent antiwear,
oxidation prevention, corrosion inhibition, seal
conditi
oning, 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.
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, filt
ers,
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

Service Manual February 2022
Specifications
4 GRC™Part No. 1314708GT
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.
Chevron 5606A Hydraulic Oil
Fluid Properties
ISO Grade
15
Viscosity index
300
Kinematic Viscos
ity
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

February 2022 Service Manual
Specifications
Part No. 1314708GT GRC™5
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
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 Manual February 2022
Specifications
6 GRC™Part No. 1314708GT
Hydraulic Hose and Fitting
Torque Specifications
Your machine is equipped with Parker Seal-Lok™
ORFS or 37° JIC fittings and hose ends. Genie
specifications require that fittings and hose ends
be torqued to specification when they are removed
and installed or when new hoses or fittings are
installed.
Seal-Lok™ Fittings
(hose end - ORFS)
SAE Dash Size
Torque
-4 18 ft-lbs / 25 Nm
-6 30 ft-lbs / 41 Nm
-8
40 ft-lbs / 55 Nm
-10 60 ft-lbs / 81 Nm
-12 85 ft-lbs / 115 Nm
-16 110 ft-lbs / 150 Nm
-20 150 ft-lbs / 205 Nm
-24 230 ft-lbs / 315 Nm
JIC 37° Fittings
(swivel nut or hose connection)
SAE Dash Size
Thread Size
Flats
-4 7/16-20 2
-6 9/16-18 1 1/2
-8 3/4-16 1 1/2
-10 7/8-14 1 1/2
-12 1 1/16-12 1 1/4
-16
1 5/16-12
1
-20 1 5/8-12 1
-24 1 7/8-12 1
SAE O-ring Boss Port
(tube fitting - installed into Aluminum)
(all types)
SAE Dash Size
Torque
-4 14 ft-lbs / 19 Nm
-6 23 ft-lbs / 31,2 Nm
-8
36 ft-lbs / 49 Nm
-10 62 ft-lbs / 84 Nm
-12 84 ft-lbs / 114 Nm
-16 125 ft-lbs / 169,5 Nm
-20 151 ft-lbs / 204,7 Nm
-24 184 ft-lbs / 249,5 Nm
Adjustable Fitting Non-adjustable fitting
1 jam nut
SAE O-ring Boss Port
(tube fitting - installed into Steel)
SAE Dash Size
Torque
-4 ORFS / 37° (Adj)
ORFS (Non-adj)
37° (Non-adj)
15 ft-lbs / 20,3 Nm
26 ft-lbs / 35,3 Nm
22 ft-lbs / 30 Nm
-6 ORFS (Adj / Non-adj)
37° (Adj / Non-adj)
35 ft-lbs / 47,5 Nm
29 ft-lbs / 39,3 Nm
-8
ORFS (Adj / Non-adj)
37° (Adj / Non-adj)
60 ft-lbs / 81,3 Nm
52 ft-lbs / 70,5 Nm
-10 ORFS (Adj / Non-adj)
37° (Adj / Non-adj)
100 ft-lbs / 135,6 Nm
85 ft-lbs / 115,3 Nm
-12 (All types) 135 ft-lbs / 183 Nm
-16 (All types)
200 ft-lbs / 271,2 Nm
-20 (All types) 250 ft-lbs / 339 Nm
-24 (All types) 305 ft-lbs / 413,5 Nm

February 2022 Service Manual
Specifications
Part No. 1314708GT GRC™7
Torque Procedure
Seal-Lok™ fittings
1 Replace the O-ring. The O-ring must be
replaced anytime the seal has been broken.
The O-ring cannot be re-used if the fitting or
hose end has been tightened beyond finger
tight.
Note: The O-ring in Parker Seal Lok™ fittings and
hose end are custom-size O-rings. They are not
standard size O-rings. They are available in the O-
ring field service kit (Genie part number 49612).
2 Lubricate the O-ring before installation.
3 Be sure the O-ring face seal is seated and
retained properly.
4 Position the tube and nut squarely on the face
seal end of the fitting, and tighten the nut
finger tight.
5 Tighten the nut or fitting to the appropriate
torque. Refer to the appropriate torque chart
in this section.
6 Operate all machine functions and inspect the
hose, fittings and related components to
confirm there are no leaks.
JIC 37° fittings
1 Align the tube flare (hex nut) against the nose
of the fitting body (body hex fitting) and
tighten the hex nut to the body hex fitting to
hand tight, approximately 30 in-lbs / 3.4 Nm.
2 Using a permanent ink marker, make a
reference mark on one the flats of the hex nut
and continue the mark onto the body of the
hex fitting. Refer to Illustration 1.
Illustration 1
1 hex nut
2 reference mark
3 body hex fitting

Service Manual February 2022
Specifications
8 GRC™Part No. 1314708GT
3 Working clockwise on the body hex fitting,
make a second mark with a permanent ink
marker to indicate the proper tightening
position. Refer to Illustration 2.
Note: Use the JIC 37° Fitting table in this section
to determine the correct number of flats, for the
proper tightening position.
Note: The marks indicate the correct tightening
positions have been determined. Use the second
mark on the body hex fitting to properly tighten the
joint after it has been loosened.
Illustration 2
1 body hex fitting
2 reference mark
3 second mark
4 Tighten the hex nut until the mark on the hex
nut is aligned with the second mark on the
body hex fitting.
5 Operate all machine functions and inspect the
hose, fittings and related components to
confirm there are no leaks.