SECTION 8 COMPONENT MOUNTING TORQUE
Group 1 Introduction guide ------------------------------------------------------------------------------------------- 8-1
Group 2 Engine system ------------------------------------------------------------------------------------------------ 8-2
Group 3 Electric system ----------------------------------------------------------------------------------------------- 8-4
Group 4 Hydraulic system -------------------------------------------------------------------------------------------- 8-5
Group 5 Undercarriage ------------------------------------------------------------------------------------------------ 8-7
Group 6 Structure --------------------------------------------------------------------------------------------------------- 8-8
Group 7 Work equipment --------------------------------------------------------------------------------------------- 8-10
SECTION 8 COMPONENT MOUNTING TORQUE
GROUP 1 INTRODUCTION GUIDE
1. This section shows bolt specifications and
standard torque values needed when
mounting components to the machine.
2. Use genuine Hyundai spare parts.
We expressly point out that Hyundai will not
accept any responsibility for defects resulted
from non-genuine parts.
In such cases Hyundai cannot assume
liability for any damage.
※ Only metric fasteners can be used and
incorrect fasteners may result in machine
damage or malfunction.
※ Before installation, clean all the
components with a non-corrosive cleaner.
R35Z78CM20
Bolts and threads must not be worn or
damaged.
8-1
GROUP 2 ENGINE SYSTEM
1. ENGINE AND ACCESSORIES MOUNTING
Air cleaner
3
Fan 1
3 3
Main pump
housing
Engine
Muffler 1
35Z9A8CM01
·Tightening torque
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
1 M 8×1.25 2.5±0.5 18.1±3.6 3 M 12×1.75 12.8±3.0 93±22.0
2 M10×1.5 6.9±1.4 50±10.0
8-2
2. COOLING SYSTEM AND FUEL TANK MOUNTING
2 Condenser
1
Engine & comp bracket 2
Water separator
Receiver dryer
Fuel tank
2
2
2
2
1
Radiator
4 Feed pump
total assy
3
Engine
2
4
35Z9A8CM02
·Tightening torque
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
1 M 6×1.0 1.05±0.2 7.6±1.45 3 M 10×1.5 6.9±1.4 50±10.0
2 M 8×1.25 2.5±0.5 18.1±3.6 4 M 12×1.75 12.8±3.0 93±22.0
8-3
GROUP 3 ELECTRIC SYSTEM
1. ELECTRIC COMPONENTS MOUNTING 1
Cab top
2
1
Fuse box
1
Washer tank
2
3 Travel buzzer
35Z9A8CM03
·Tightening torque
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
1 M 6×1.0 1.05±0.2 7.6±1.45 3 M10×1.5 6.9±1.4 49.9±10.1
2 M 8×1.25 2.5±0.5 18.1±3.6
8-4
GROUP 4 HYDRAULIC SYSTEM
1. HYDRAULIC COMPONENTS MOUNTING 1
Hyd tank
Level gauge
8
3 Return block
Main pump
Coupling
housing
3 5
5
Suction pipe
8
Turning joint
Main pump
8 3
Terminal 6
8 9
2 Solenoid valve
Swing motor RCV-travel 3
RCV-dozer
2
RCV-pedal
RCV-RH 1 MCV
1 MCV bracket
RCV-LH
3 3
35Z9A8CM05
·Tightening torque
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
1 M 6×1.0 1.05±0.2 7.6±1.45 6 M12×1.75 9.5±1.9 69±14.0
2 M 8×1.25 2.5±0.5 18.1±3.6 8 M12×1.75 12.8±3.0 93±22.0
3 M10×1.5 6.9±1.4 49.9±10.1 9 M14×2.0 19.6±2.9 142±21.0
5 M10×1.5 8.27±1.7 59.8±12.3
8-5
2. HYDRAULIC COMPONENTS MOUNTING 2
1 2 3 1 2 3
Boom cylinder Arm cylinder
1 2 3
1 2 3
Bucket cylinder Dozer cylinder
R35Z98CM07
·Tightening
Tightening torque
1) Gland
1 2 3
Item Size kgf·m lbf·ft
Boom cylinder M90×2 68±6.8 492±49
Arm cylinder M85×2 64±6.4 463±46
Bucket cylinder M75×2 56±5.6 405±41
Boom swing cylinder Dozer cylinder M100×2 75±7.5 542±54
Boom swing cylinder M85×2 64±6.4 463±46
2) Piston 3) Piston nut
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
Boom cylinder M40×2 100±10 723±72 Boom cylinder M33×2 82±8 593±59
Arm cylinder M40×2 100±10 723±72 Arm cylinder M33×2 82±8 593±59
Bucket cylinder M33×2 83±8 600±60 Bucket cylinder M29×2 73±7 528±53
Dozer cylinder M39×2 98±9.8 709±71 Dozer cylinder M39×2 150±15 1085±109
Boom swing cylinder M40×2 100±10 723±72 Boom swing cylinder M33×2 93±9 673±67
8-6
GROUP 5 UNDERCARRIAGE
Swing bearing
Track
4
Travel motor
Sprocket
Upper roller
5
Idler
Adjust component
2
2
Lower roller
35Z9A8CM08
·Tightening torque
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
1 M10×1.5 6.9±1.4 50±10.1 4 M12×1.75 13.8±1.0 100±7.2
2 M12×1.75 12.3±1.2 89±8.7 5 M18×2.0 41.3±4.0 299±28.9
3 M12×1.75 13.3±2.0 96.2±14.5
8-7
GROUP 6 STRUCTURE
1. CANOPY AND ACCESSORIES MOUNTING
Guard
Head lining
Cab assy
4 3
Bottom plate-rear/RH
1
2 2
Bottom plate-rear/LH
Travel lever 1
3
2
Bottom plate-front
35Z9A8CM09
·Tightening torque
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
1 M 8×1.25 2.5±0.5 18.1±3.6 3 M 10×1.5 6.9±1.4 50±10
2 M 8×1.25 4.05±0.8 29.3±5.8 4 M 12×1.75 12.8±3.0 92.6±21.7
8-8
2. COWLING MOUNTING
Support
2 Seat
5
5
1
2
2 Engine hood
assy
4 2
3
2
Tool box 2
2
6 2 2
2 Hyd tank
2
2 2
2
1
Upper frame
2
1
2
2
2
35Z9A8CM10
·Tightening torque
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
1 M 6×1.0 1.05±0.2 7.6±1.45 4 M10×1.25 8.27±1.7 59.8±12.3
2 M 8×1.25 2.5±0.5 18.1±3.6 5 M12×1.75 12.8±3.0 93±22.0
3 M 8×1.25 3.43±0.7 24.8±5.1 6 M20×2.5 57.9±8.7 419±62.9
8-9
GROUP 7 WORK EQUIPMENT
Arm cylinder rod pin Arm cylinder head pin
1
1 Boom pin
1
Boom cylinder
Arm cylinder
Boom assy
Boom cylinder
head pin
1 1
Boom cylinder
rod pin
Arm assy
1
1 Dozer cylinder
Bucket cylinder
rod pin Arm pin
Bucket cylinder head pin 1
1 1
Bucket control
rod pin Dozer blade assy
Tooth Dozer cylinder
rod pin
1
1
3
2
Bucket cylinder 1 Dozer cylinder
rod pin head pin
Side cutter
Bucket control
rod pin Bucket
Bucket
control link
1
35Z9A8CM11
·Tightening torque
Item Size kgf·m lbf·ft Item Size kgf·m lbf·ft
1 M12×1.75 12.8±3.0 92.6±21.7 3 M16×1.5 31.3±4.7 226±34
2 M16×2.0 29.7±4.5 215±32.5
8-10
