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Power train System20/25/30/33D-7(E)
Basic information for power train system
TRANSMISSION(MSP)- PTO Drive- Gear Train- Clutch Pack- Charging Pump- Control Valve
ENGINE (Kubota)* V3300-Tier 2* V3600-Tier 3
TORQUECONVERTER- Impeller- Stator- Turbine
DRIVE AXLE(MSP)- Mast Mounting- Frame Mounting- Hub- Brake
Other models EngineModel
20/25/30/33D-7(E)
Engine
Kubota
35/40/45D(S)-7
HDF50/70-7(S)
D: HMCS: Mitsubishi
D: HMCS: Mitsubishi
80D-7
100>160D-7(E)
Mitsubishi
Cummins
HMC: Hyundai Motor Co.,
TransmissionModel
20/25/30/33D-7(E)
35/40/45D(S)-7
HDF50/70-7(S)
80D-7
100>160D-7(E)
T/M
MSP
DIC
ZF(3WG94)
ZF(3WG94)
ZF(3WG161)
Gear shift (FR/RR)
1/1
2/2
3/3
3/3
3/3
AxleModel
20/25/30/33D-7(E)
35/40/45D(S)-7
HDF50/70-7(S)
80D-7
100>160D-7(E)
Axle
MSP
DIC
DIC
DIC
Kessler
MobileFluid 424(10.5)
SAE80W-90/API GL-5(12.5)
MobileFluid 424(12.5)
Gear oil: SAE80W-90/API GL-5 Cooling oil: Hydraulic oil +Lubrizol LZ9990A
Axle oil(Capacity)
MobileFluid 424(5)
Structure and OperationPower train DiagramTorque Converter
Transmission
T/M filter
Control valve
Drive shaftBrake (Wet)
Drive Axle
Hub
SpecificationSpecification
ItemTorque converter
Transmission
Model
Z80-D(ZF)
Type
3 Element, 1stage, 2phase
Stall ratio
2.8
Type
Power shift
Gear shift (FR/RR)
1/1
Control
Electrical single lever type
Overhaul ratio
AxleWheelsBrakes
FR
15.886
RR
16.497
Type
Front wheel drive type, fixed location
Gear
Hypoid gear type
Qty (FR/RR)
Single: 2/2, Double:4/2
Travel
Front wheel, duo-servo & auto adjustment type
Parking
Toggle, internal expanding mechanical type
Transmission
Transmission
Control valveTorque converter
Temp. Sensor
Parking brake link lever
T/M oil filterAir breatherT/M output (Drive shift joint)
Dip stick
T/M case, Control valve, Oil pump and Parking brake
Structure
Forward ClutchCutch pack plugging
Cutch pack lubrication line
pressure delivery line
(From control valve)
(From control valve)
9~14.2kgf/
1 Drum gear
4 Clutch gear
2 Clutch piston
5 Forward shift
3 Friction plate and plate
Modification of Transmission Seal type #1 (SB-I-2009-013)
Caution! Forward/reverse clutch pack must be replaced with those 3 parts at the same time
Modification of Transmission Seal type #2 (SB-I-2009-016)
ovedrpmIPiston
Torque Converter (Structure)
Stator
Pump
TurbineInput flangeT/M Pump
Picture of Impeller (Pump) and Turbine (Motor)
Torque Converter (Diagram)
(2~3bar)(7bar)
For clutch lubrication
:To protect converter(13cc/rev)
blades
:To protectoil cooler
Torque Converter (Oil pump & spacer)Oil pump case
Stator shaftDrive gear
Spacer
Control valve
Function of Control valveSort
Function
Remarks
Modulating Valve
It relives oil flows.It decreases impact when changing gear to theforward or backward and quick start and usinginching valve.
Solenoid Valve
It is connected with switch of forward, back wardand it supplies pressure to the clutch of forward,backward.
Inching Valve
It controls pressure of clutch oil depending on how Do not use at highmuch operator presses the inching pedal.travel speed
Regulator Valve
It controls oil pressure to the regulation scope thatis occurred from charging pump of the converter. Main relief valveIt protects valve and oil cooler of the converter.
Useful when abruptgear change is tried.
Hydraulic Circuit
Engine
- Inching
Engine
Engine
Improvement of Jerky starting (SB-I-2008-017)
Improvement of Gear Selector (SB-I-2009-009)(35D/40D/45D-7)
Drive Axle
Drive Axle
Carrier Assy
Axle housing
Brake (wet)
Oil level gaugeHub
StructureAxle shaft
Differential device
Axle shaft
HubBrake
Pinion shaft
Ring gear
From T/M output
Brake
Schematic for wet disc brakeBrake piston
Brake oilpassage
Friction discs & plates
Wheel hub
Return spring
Piston seal
Improvement of brake disc (SB-S-2010-017)2. ImprovementPart name
Current
Improved
Part number Qt'y
Part number
Qt'y
Remark
Plate-friction
XKCF-00138
10
XKCF-00644
10
Developed for A/S purpose
Plate
XKCF-00137
12
Need not to replace.(Reusable)
3. Noise CountermeasureStep 1) Periodic maintenance (Replace MF424 oil at initial 50 hours and every 500 hours.)Step 2) Oil replacing period comes earlier and/or, MF 424 is less effective.
keaBr
Step 3) Replace the improved discs(XKCF-00644) and oil in accordance with below table.HHI's viewRecommended
Axle oilMobil Fluid 424 (* Current)Shell Donax TD 10W30Shell Spirax 80W90 LS
Replaceable
Mobil Infilex33 85W90
Remark
HHI finished real test. (Confirmed)In case, the 2 recommended oilsare not available, you can try.
Caltex Textran TDH
Note) It needs not to replace Plate(XKCF-00137) whenever Friction plates are replaced.
ison
edre
!niotuc
Brake disc (Wet type)
Brake & hub
Piston seal
Friction disc and plate
Piston seal
Brake piston
Disassembly
Air bleeding & brake oil line
Friction disc(5EA) & plate(6EA)
Troubleshooting - Air bleeding1)Pedal stroke: If the seal in master cylinder is positionedin the left side than hole for brake oil fromreservoir tank, air-bleeding job can not bedone correctly. In this case, you need toadjust for the pedal idle stroke(1~3mm).In other words, rod in master cylinder needsto be pulled out in maximum.2)Master cylinder & Axle (2 persons): Person A press and release the pedal several times(10 times) and press it in the end.Person B slightly release the pipe line in master cylinder outlet to take out the oil (air)in master cylinder. Person A release the pedal (At this point, refill the brake oil in reservoir tank.If the oil level is not reduced, above pedal stroke adjustment is not correctly done.)and repeat above work 4~5 times. Then, tighten the pipe to finish air-bleeding job withmaster cylinder. (Same job for axle bleeding)
Specification1)Disc brakeItem
Specification
Type
Wet disc brake
Master cylinder diameter (non-boosted)
33mm
Pedal height
160mm
Play
1~3mm
Pedal adjustmentBrake oil
Azola zs10(SAE 10W hydraulic oil)
2)Parking brakeItem
Specification
Type
Ratchet, internal expending mechanical type
Parking lever stroke/Cable stroke
12.1/11.5mm
Brake systemParking brakeBrake pedalT/M control valveInching pedalMaster cylinder
Transmission
Pressure switchDrive axle
Use of Brake Oil (SB-S-2009-012)
Caution! Use correct brake oil according to decal for your brake system
Improperly used brake oilDamages the seals andpiston stuck.
Distinction of brake oil
Protection of brake pipe (SB-I-2009-011) Phenomenon
U-clamp installation
Improvement of brake pressure switch (SB-I-2009-023)
34
rab.6
rab69
Inching pedal and linkageStroke: 3~4mmPressure drop: 2~3bar
(Initial position)
Adjustment
(15~20 mm)(1~3 mm)
(160 mm)
(160 mm)
Brake pedal1)Pedal height from floor
- Adjust with stopper bolt
- Adjust with stopper bolt
- Adjust with master cylinder rod
Parking brake
Inching pedal
1)Pedal height from floor
2)Idle stroke
(Stroke: 2~3mm)
2)Adjust bolt so that brake pedalinterconnects with inching pedalat inching pedal stroke 15~20mm
1)After assembling parking brake andparking cable, put parking brake leverreleased.2)Loosen nut for parking brake plateto play up and down.3)Move up the plate so that stopper can beconnected with pin and reassemble nut.
Maintenance Chart for power train systemServiceInterval
Description
Serviceaction
OilSymbol
Capacity()
Check, Add
BF
0.5
Check, Adjust
-
-
Check, Add
-
-
Check, Adjust
-
-
5
Brake oil
6
Parking brake operation
15
Tire air pressure andWheel nut
25
Pedal linkage operation
50hrsor weekly
13
Steering axle linkage
Check, Add
G
-
22
Transmission oil level
Check, Add
MO
10
Initial 50hrs
26
Differential gear oil
Change
GO
5
Initial100hrs
22
Transmission oil
Change
MO
10
23
Transmission oil filter
Replace
-
-
26
Differential gear oil
Check, Add
GO
5
5
Brake oil
Replace
BF
0.5
26
Differential gear oil
Replace
GO
5
22
Transmission oil
Replace
MO
10
23
Transmission oil filter
Replace
-
-
12
Radiator coolant
Replace
C
9.4
19
Hydraulic strainer
Check, clean
-
-
19
Hydraulic oil*1
Change
HO
26
19
Hydraulic oil*2
Change
HO
26
10hrsor daily
250hrsor monthly500hrsor3 monthly1000hrsor6 monthly
*1: Conventional hydraulic oil
ItemNo.
2000hrs
*2: Hyundai genuine long life hydraulic oil5000hrs
ThankThank youyou forfor youryour attentionattention !!