Terex Genie Z-34/22 IC Installation and operating manual

Service and Repair Manual
Serial Number Range
Z-34/22 IC
from Z3406-4800
This manual includes:
Repair procedures
Fault
Codes
Electrical and
Hydraulic Schematics
For detailed maintenance
procedures, refer to the
appropriate Maintenance
Manual for your machine.
Part No. 1268527
Rev A
September 2015

Service and Repair Manual September 2015
Introduction
ii Z-34/22 IC Part No. 1268527
Intr od ucti o n Intr od ucti o 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 B/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 Operator's, Parts,
Maintenance, and Service and Repair manuals.
Copyright © 2015 by Terex Corporation
1268527 Rev A, September 2015
First Edition, First Printing
Genie is a registered trademark of Terex South Dakota, Inc. in
the U.S.A. and many other countries.
“Z” is a trademark of Terex South Dakota, Inc.

September 2015 Service and Repair Manual
Introduction
Part No. 1268527 Z-34/22 IC iii
Revision History
Revision
Date
Section
Procedure / Page / Description
A 9/2015 Release
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 September 2015
Introduction
iv Z-34/22 IC Part No. 1268527
Serial Number Legend
1 Model
2 Model year
3 Sequence number
4 Serial number (stamped on chassis)
5 Serial label

September 2015 Service and Repair Manual
Safety Rules
Part No. 1268527 Z-34/22 IC v
Section 1 Safet y R ul 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 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 and Repair Manual September 2015
Safety Rules
vi Z-34/22 IC Part No. 1268527
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 components when lif
ting 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
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.

September 2015
Table of Contents
Part No. 1268527 Z-34/22 IC vii
Introduction Introduction...........................................................................................................ii
Important Information ............................................................................................. ii
Find a Manual for this Model .................................................................................. ii
Revision History..................................................................................................... iii
Serial Number Legend .......................................................................................... iv
Section 1 Safety Rules ..........................................................................................................v
General Safety Rules ............................................................................................. v
Section 2 Specifications .......................................................................................................1
Machine Specifications...........................................................................................1
Performance Specifications....................................................................................2
Hydraulic Specification ...........................................................................................2
Hydraulic Component Specifications......................................................................4
Machine Torque Specifications ..............................................................................6
Kubota D-905 Engine Specifications......................................................................7
Kubota DF-752 Engine Specifications ...................................................................8
Perkins 403C-11 Engine Specifications .................................................................9
Hydraulic Hose and Fitting Torque Specifications ...............................................10
Torque Procedure ................................................................................................11
SAE and Metric Fasteners Torque Charts ...........................................................12

September 2015
Table of Contents
viii Z-34/22 IC Part No. 1268527
Section 3 Repair Procedures ............................................................................................. 13
Introduction .......................................................................................................... 13
Platform Controls............................................................................................... 15
1-1 Drive Joystick................................................................................................. 15
How to Adjust the Drive Joystick .................................................................... 15
1-2 Boom Function Speed Controller Adjustments.............................................. 17
Boom Function Speed Controller Adjustments............................................... 17
Platform Components ....................................................................................... 19
2-1 Platform Leveling Slave Cylinder................................................................... 19
How to Remove the Platform Leveling Slave Cylinder ................................... 19
How to Bleed the Leveling Slave Cylinder...................................................... 19
2-2 Platform Rotator............................................................................................. 20
How to Remove the Platform Rotator ............................................................. 20
How to Bleed the Platform Rotator ................................................................. 21
2-3 Platform Overload System............................................................................. 22
How to Calibrate the Platform Overload System (if equipped) ....................... 22
Jib Boom Components...................................................................................... 24
3-1 Jib Boom ........................................................................................................ 24
How to Remove the Jib Boom ........................................................................ 24
3-2 Jib Boom Bell Crank ...................................................................................... 25
How to Remove the Jib Boom Bell Crank ...................................................... 25
3-3 Jib Boom Lift Cylinder .................................................................................... 25
How to Remove the Jib Boom Lift Cylinder .................................................... 25

September 2015
Table of Contents
Part No. 1268527 Z-34/22 IC ix
Primary Boom Components..............................................................................27
4-1 Cable Track ....................................................................................................27
How to Repair the Primary Boom Cable Track ...............................................27
4-2 Primary Boom.................................................................................................27
How to Shim the Primary Boom ......................................................................27
How to Remove the Primary Boom.................................................................28
How to Disassemble the Primary Boom .........................................................30
4-3 Primary Boom Lift Cylinder ............................................................................31
How to Remove the Primary Boom Lift Cylinder.............................................31
4-4 Primary Boom Extension Cylinder .................................................................32
How to Remove the Primary Boom Extension Cylinder..................................32
4-5 Platform Leveling Master Cylinder .................................................................34
How to Remove the Platform Leveling Master Cylinder .................................34
Secondary Boom Components.........................................................................36
5-1 Secondary Boom............................................................................................37
How to Disassemble the Secondary Boom.....................................................37
5-2 Secondary Boom Lift Cylinders......................................................................40
How to Remove the Secondary Boom Lift Cylinders ......................................40
Engines................................................................................................................42
6-1 Kubota Diesel Models ....................................................................................42
Timing Adjustment ..........................................................................................42
How to Check the Glow Plugs.........................................................................42
RPM Adjustment .............................................................................................42
How to Remove the Flex Plate........................................................................43
How to Install the Flex Plate............................................................................43
Coolant Temperature and Oil Pressure Switches...........................................43

September 2015
Table of Contents
x Z-34/22 IC Part No. 1268527
6-2 Kubota Gasoline / LPG Models ..................................................................... 44
Choke Adjustment .......................................................................................... 44
Timing Adjustment .......................................................................................... 44
Carburetor Adjustment.................................................................................... 44
RPM Adjustment ............................................................................................. 44
How to Remove the Flex Plate ....................................................................... 45
How to Install the Flex Plate ........................................................................... 45
Coolant Temperature and Oil Pressure Switches .......................................... 45
6-3 Perkins Diesel Models ................................................................................... 46
Timing Adjustment .......................................................................................... 46
RPM Adjustment ............................................................................................. 46
How to Remove the Flex Plate ....................................................................... 47
How to Install the Flex Plate ........................................................................... 47
Coolant Temperature and Oil Pressure Switches .......................................... 47
Hydraulic Pumps................................................................................................ 49
7-1 Auxiliary Pump ............................................................................................... 49
How to Test the Auxiliary Pump...................................................................... 49
How to Remove the Auxiliary Pump ............................................................... 49
7-2 Function Pump............................................................................................... 50
How to Test the Function Pump ..................................................................... 50
How to Removet the Function Pump .............................................................. 50
7-3 Drive Pump .................................................................................................... 51
How to Remove the Drive Pump .................................................................... 51
How to Prime the Drive Pump ........................................................................ 51

September 2015
Table of Contents
Part No. 1268527 Z-34/22 IC xi
Manifolds.............................................................................................................52
8-1 Function Manifold Components .....................................................................52
8-2 Valve Adjustments - Function Manifold..........................................................56
How to Adjust the Primary Boom Down Relief Valve......................................56
How to Adjust the Secondary Boom Down Relief Valve.................................56
8-3 Jib Boom and Platform / Jib Boom Rotate Manifold Components.................57
8-4 Brake/Two-Speed Manifold Components ......................................................58
8-5 Traction Manifold Components, 2WD ............................................................59
8-6 Traction Manifold Components, 4WD ............................................................60
8-7 Valve Adjustments, 4WD Traction Manifold...................................................62
8-8 Valve Coils .....................................................................................................63
How to Test a Coil...........................................................................................63
Valve Coil Resistance Specification................................................................63
How to Test a Coil Diode ................................................................................64
Fuel and Hydraulic Tanks..................................................................................65
9-1 Fuel Tank .......................................................................................................65
How to Remove the Fuel Tank........................................................................65
9-2 Hydraulic Tank ...............................................................................................66
How to Remove the Hydraulic Tank................................................................66
Turntable Rotation Components ......................................................................67
10-1 Turntable Rotation Hydraulic Motor .............................................................67
How to Remove the Turntable Rotation Motor................................................67
Axle Components...............................................................................................68
11-1 Hub and Bearings, 2WD Models..................................................................68
How to Remove the Hub and Bearings...........................................................68
How to Install the Hub and Bearings...............................................................68

September 2015
Table of Contents
xii Z-34/22 IC Part No. 1268527
Section 4 Schematics ......................................................................................................... 69
Introduction .......................................................................................................... 69
Electrical Symbol Legend .................................................................................... 70
Hydraulic Symbols Legend .................................................................................. 71
Electrical Component and Wire Color Legends................................................... 72
Electrical Schematics - Gasoline/LPG Models................................................ 75
Electrical Schematic - Gasoline/LPG Models ...................................................... 76
Ground Control Box Switch Panel Wiring Diagram - Gasoline/LPG Models....... 80
Ground Control Box Terminal Strip Wiring Diagram - Gasoline/LPG Models ..... 81
Platform Control Box Wiring Diagram - Gasoline/LPG Models ........................... 84
Electrical Schematics - Diesel Models............................................................. 85
Electrical Schematic - Diesel Models................................................................... 86
Ground Control Box Switch Panel Wiring Diagram - Diesel Models ................... 90
Ground Control Box Terminal Strip Wiring Diagram - Diesel Models.................. 91
Platform Control Box Wiring Diagram - Diesel Models ........................................ 94
Electrical Schematics - Options ....................................................................... 95
Platform Control Box Wiring Diagram - Options .................................................. 96
Manifold and Limit Switch Wiring Diagram .......................................................... 97
Hydraulic Schematics........................................................................................ 99
Hydraulic Schematic, 2WD Models.................................................................... 100
Hydraulic Schematic, 4WD Models.................................................................... 104

September 2015 Service and Repair Manual
Specifications
Part No. 1268527 Z-34/22 IC 1
Section 2 Speci fi c ati ons
Machine Specifications
Tires and wheels
rough
terrain
industrial
Tire size
10-
16.5 NHS
9-
14.5 LT
Tire ply rating
8 Ply
Tread 6
Sidewall 6
Tire and wheel weight,
foam filled (minimum)
175 l
bs
79 k
g
175 l
bs
79 k
g
Overall tire diameter
30.5 i
n
77.5 c
m
28 i
n
37 c
m
Wheel diameter
16.5 i
n
42 c
m
14.5 i
n
36.8 c
m
Wheel width
10 i
n
25.4 c
m
7 i
n
18 c
m
Wheel lugs, 4WD
9 @ 5/8 -
18
Wheel lugs, 2WD
Front
Rear
8 @ 5/8 -
18
9 @ 5/8 -
18
8 @ 5/8 -
18
9 @ 5/8 -
18
Lug nut torque, dry
125 ft-
lbs
170 Nm
125 ft-
lbs
170 Nm
Lug nut torque,
lubricated
95 ft-
lbs
129 Nm
95 ft-
lbs
129 Nm
Tire pressure,
rough terrain
45 p
si
3.1 b
ar
100 p
si
6.9 b
ar
Tires and wheels
Hi-flotation (option)
Tire size
31-15.5-
15
Tire ply
rating
8
Overall tire diameter
31 i
n
78.7 c
m
Wheel diameter
15 i
n
38.1 c
m
Wheel width
13 i
n
33 c
m
Wheel lugs
9 @ 5/8 -
18
Lug nut torque, dry
125 ft-
lbs
170 Nm
Lug nut torque,
lubricated
95 ft-
lbs
129 Nm
Tire pressure,
44 p
si
3 b
ar
Fuel
capacities
LPG tank
33.5 p
ounds
15.2 k
g
Fuel tank
9.3 g
allons
35.2 l
iters
Hydraulic tank
18 g
allons
68.1 l
iters
Hydraulic system
(including tank)
22 g
allons
83.3 l
iters
Drive hubs
17 f
l oz
503 c
c
Drive hub oil type: SAE 9
0 multipurpose hypoid gear oil
API service classification GL5

Service and Repair Manual September 2015
Specifications
2 Z-34/22 IC Part No. 1268527
Performance Specifications
Drive speed, maximum
Stowed position
3.0 m
ph
5.1 k
m/h
40 ft / 6.1 s
ec
12.2 m / 6.1 s
ec
Raised or extended
0.6 m
ph
0.98 k
m/h
40 ft / 45 s
ec
12.2 m / 45 s
ec
Gradeability
See Operator's Manual
Braking distance, maximum
High range on paved surface
3 to 4 f
t
0.9 to 1.2
m
Joystick function speeds, maximum from platform
controls
Primary boom up
15 to 21 s
econds
Primary boom down
13 to 19 s
econds
Primary
boom extend 14 to 20 s
econds
Primary boom retract
14 to 20 s
econds
Secondary boom up
15 to 21 s
econds
Secondary boom down
11 to 17 s
econds
Jib boom up
24 - 30 s
econds
Jib boom down
15 to 21 s
econds
Turntable rotate, 355°
62 to 72 s
econds
Platform rotate
4 - 7 s
econds
For operational specifications, refer to the
Operator's Manual.
Continuous improvement of our products is a
Genie policy. Product specifications are
subject to change without notice or obligation.
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
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
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 it's
maximum allowable range. If the hydraulic fluid
temperature consistently exceeds 200°F / 90°C an
optional oil cooler may be required.

September 2015 Service and Repair Manual
Specifications
Part No. 1268527 Z-34/22 IC 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: An 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 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.

Service and Repair Manual September 2015
Specifications
4 Z-34/22 IC Part No. 1268527
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
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
Hydraulic Component
Specifications
Drive Pump
Type: bi
-directional variable displacement piston pump
Displacement per revolution 1.71 cu in
28 c
c
Flow rate @ 3000 rpm 22 g
pm
84 L/min
Function pump
(standard)
Type: fixed displacement gear pump
Displacement per revolution
0.24 cu in
4 c
c
Flow rate @ 300
0 rpm 3 g
pm
11.4 L/min
Function pump
(230V generator
option)
Type: fixed displacement gear pump
Displacement per revolution 0.37 cu in
6 cc
Flow rate @ 3000 rpm 4.4 gpm
16.7 L/min

September 2015 Service and Repair Manual
Specifications
Part No. 1268527 Z-34/22 IC 5
Auxiliary Pump
Type: fixed displacement gear pump
Displacement per revolution
0.5 g
pm
1.9 L/min
Auxiliary pump relief pressure
3400 p
si
234.5 b
ar
Function manifold
System relief valve pressure,
maximum
3200 p
si
220.6 b
ar
Primary boom down relief valve
pressure
1600 p
si
110 b
ar
Secondary boom down relief
valve pressure
1600 p
si
110 b
ar
Steer flow regulator
1.0 g
pm
3.8 L/min
platform rotate flow
regulator 0.3 g
pm
1.1 L/min
Traction Manifold
Hot oil relief pressure
2WD
4WD
170 p
si
11.7 b
ar
150 p
si
10.3 b
ar
Steer end drive motors (4WD models)
Displacement per revolution 1.53 c
u in
25 c
c
Non
-steer end drive motors
Displacement per revolution 1.53 c
u in
25 c
c
Hydraulic Filters
Medium pressure filter
Beta 3 ˆ 200
Medium pressure filter bypass
pressure
50 p
si
3.4 b
ar
Hydraulic tank return filter
10 m
icron with
25 psi / 1.7 b
ar
bypass

Service and Repair Manual September 2015
Specifications
6 Z-34/22 IC Part No. 1268527
Machine Torque Specifications
Platform Rotator
3/4
-10 center bolt, GR 8, dry
3/4
-10 center bolt, GR 8, lubricated
380 ft-
lbs
515 Nm
280 ft-
lbs
379 Nm
3/8
-16 outer bolts, GR 8, dry
3/8
-16 outer bolts, GR 8, lubricated
44 ft-
lbs
60 Nm
33 ft-
lbs
45 Nm
Turntable rotate assembly
Rotate bearing mounting bolts, lubricated
180 ft-
lbs
244 Nm
Rotate bearing motor mounting bolts,
lubricated
93 ft-
lbs
126 Nm
Drive motors and hubs
Drive hub mounting bolts, lubricated
180 ft-
lbs
244 Nm
Drive motor mounting bolts, lubricated
3/8
-16, GR5
7/16
-14, GR5
23 ft-
lbs
31 Nm
37 ft-
lbs
50 Nm

September 2015 Service and Repair Manual
Specifications
Part No. 1268527 Z-34/22 IC 7
Kubota D-905 Engine
Displacement
54.86 c
u in
0.90 liters
Number of cylinders
3
Bore and Stroke
2.83 x 2.9 i
nches
72 x 73.6 m
m
Horsepower, gross
intermittent
26 @ 2600 r
pm
19.3 kW @ 2600 r
pm
Firing order
1 - 2 -
3
Low idle
1300 r
pm
260 Hz
High idle
3000 r
pm
600 Hz
Compression ratio
23:1
Compression pressure
412 to 469 p
si
28.4 to 32.3 b
ar
Governor
centrifugal mechanical
Valve Clearance, cold
0.0057 to 0.0072 i
n
0.145 to 0.185 m
m
Lubrication system
Oil pressure
36 to 64 p
si
2.48 to 4.41 b
ar
Oil capacity
(including filter)
5.4 q
uarts
5.1 liters
Oil viscosity requirements
-
22° F to 86° F/ -30° C to 30° C 5W-
30 (synthetic)
-
4° F to 90° F / -20° C to 32° C 10W-
40
Above 23° F /
-5° C 20W-
50
Unit ships with 15W
-40. Extreme operating
temperatures may require the use of alternative engine
oils. For oil requirements, refer to the Engine Operator
Manual for your engine.
Engine coolant
Capacity
3.3 q
uarts
3.1 liters
Fuel injection system
Injection pump make
Bosch MD
Injection pump pressure,
maximum
1991 p
si
137 b
ar
Injection timing
13° to 25° BTDC
Fuel requirement
For fuel requirements, refer to the engine Operator
Manual for
your engine.
Starter motor
Cranking speed
200 -
300 RPM
Current draw, normal load
155A
Battery
Type
12V DC
Group
34/78
Quantity
1
Ampere hour
75AH
Cold cranking ampere
900A
Reserve capacity @ 25A rate
125 m
inutes
Alternator output
30A @ 12V DC
Fan belt deflection
1/4 to 3/8 i
nch
7 to 9 m
m

Service and Repair Manual September 2015
Specifications
8 Z-34/22 IC Part No. 1268527
Kubota DF-752 Engine
Displacement
45 c
u in
0.74 l
iters
Number of cylinders
3
Bore and Stroke
2.68 x 2.68 i
nches
68 x 68 m
m
Horsepower
24.8 @ 3600 r
pm
18.5 kW @ 3600 r
pm
Firing order
1 - 2 -
3
Low idle
1600 r
pm
320 Hz
High idle
3000 r
pm
600 Hz
Compression ratio
9.2:1
Compression pressure
128 to 185 p
si
8.8 to 12.7 b
ar
Governor
centrifugal mechanical
Valve Clearance, cold
0.0057 to 0.0072 i
n
0.145 to 0.183 m
m
Lubrication system
Oil pressure
28 to 64 p
si
1.9 to 4.4 b
ar
Oil capacity
(including filter)
3.4 q
uarts
3.25 l
iters
Oil viscosity requirements
Below 86°F / 30°C
5W-
20
-
4°F to 104°F / -20°C to 40°C 10W-
30
Above 14°F /
-10°C 15W-
40
Unit ships with
15W-40. Extreme operating
temperatures may require the use of alternative engine
oils. For oil requirements, refer to the Engine Operator
Manual for your engine.
Fuel Pump
Fuel pressure, static
2.84 p
si
0.19 b
ar
Fuel flow rate
0.125 g
pm
0.47 L/min
Fuel requirement
For fuel requirements, refer to the engine Operator
Manual for your engine.
Alternator output
30A @ 12V DC
Fan belt deflection
1/4 to 3/8 i
n
7 to 9 m
m
Starter motor
Brush length, new
0.669 i
n
17 m
m
Brush length, minimum
0.453 i
n
11.5 m
m
Brush spring tension
50 to 91 o
unces
13.7 t
o 25.5 Newtons
Battery
Type
12V DC
Group
34/78
Quantity
1
Ampere hour
75AH
Cold cranking ampere
900A
Reserve capacity @ 25A rate
125 m
inutes
Engine coolant
Capacity
3.1 quarts
2.9 liters
Ignition system
Ignition spark advance
18° BTDC
Ignition coil primary resistance
1.3 to 1.6
Ω
@ 75°F / 24°C
Ignition coil secondary
resistance
10.7 to 14.5 k
Ω
@ 75°F / 24°C
#1 Spark plug wire resistance
2.81 to 4.79 k
Ω
#2 Spark plug wire resistance
3.4 to 5.8 k
Ω
#3 Spark plug wire resistance
3.57 to 6.09 k
Ω
Spark plug type
NGK BKR4E-
11
Spark plug gap
0.039 to 0.043 i
n
1 to 1.1 m
m