SIF1007 DL-A Wheel Loaders - 12 - Transmission
SIF1007 DL-A Wheel Loaders - 12 - Transmission
SIF1007 DL-A Wheel Loaders - 12 - Transmission
DL200A/250A/300A/350A
June, 2014
Product Support
Doosan Infracore
Power train
DL420A
DL200A : ZF4WG 160
DL300A
DL250A : ZF4WG 190
DL250A
1
Power train
Transmission (DL200A/250A/300A/350A)
Internal section.
2
Power train
Transmission (DL200A/250A/300A/350A)
Exterior view ( I )
1. Lifting plug.
2. Diaphragm.
3. Transmission suspension hole .
4. Attachment for emergency steering pump.
5. Model I/D
6. Output flange converter side.
7. Oil drain plug.
8. Attachment for oil filter pipe.
9. Oil dipstick.
10. Torque converter.
3
Power train
Transmission (DL200A/250A/300A/350A)
Exterior view ( II )
1. Lifting lugs.
2. Power take off (Installed main pump)
3. Electro- Hydraulic control block.
4. Return port.
5. Parking brake.
6. Transmission suspension hole.
7. Oil dipstick hole.
8. Disc brake.
9. Output flange (Front axle)
10. Fine filter.
11. Filter head.
12. System pressure port.
4
Power train
Transmission (DL200A/250A/300A/350A)
Exterior view ( III )
5
Power train
Transmission (DL200A/250A/300A/350A)
Transmitter location.
6
Power train
Transmission (DL200A/250A/300A/350A)
Inner parts.
7
Power train
Transmission (DL200A/250A/300A/350A)
Pressure check point on mission control block.
8
Power train
Transmission (DL200A/250A/300A/350A)
Oil circulation. B D
WSV
: Main pressure
Converter
: Regulated main pressure
: Pilot pressure Fine filter
: Converter input pressure WGV
: Converter output pressure
: Lubrication Charging pump
Oil cooler
: Return to the sump
9
Power train
Transmission (DL200A/250A/300A/350A)
Proportional valve.
10
Power train
Transmission (DL200A/250A/300A/350A)
Operation of proportional valve.
500 mA 100 mA
Neutral : 100 mA
Proportional valve is opened
11
Power train
Transmission (DL200A/250A/300A/350A)
System oil circulation.
65 (K)
51(H)
51 (H).
52,63
In front of converter pressure (6~7 bar)
52/63.
Behind converter pressure (4.3 bar)
65 (K).
System pressure (16+2 bar)
12
Power train
Transmission (DL200A/250A/300A/350A)
System oil circulation (Forward 1st)
K1 KV
56 (D) 53 (B)
Driving Engage
Speed Y1 Y2 Y3 Y4 Y5 Y6
Direction d Clutch
1st ◆ ◆ K1,KV
2nd ◆ ◆ KV,K2
Forward
3rd ◆ ◆ K3,KV
4th ◆ ◆ K4,K3
1st ◆ ◆ KR,K1
Reverse 2nd ◆ ◆ KR,K2
3rd ◆ ◆ KR,K3
Neutral
Related Clutch K4 KR K1 K3 KV K2
Location F E D C B A
Measuring Point 60 55 56 58 53 57
System Pressure (bar) 16+2 16+2 16+2 16+2 16+2 16+2
13
Power train
Transmission (DL200A/250A/300A/350A)
System oil circulation (Forward 2nd)
KV K2
53 (B) 57 (A)
Driving Engage
Speed Y1 Y2 Y3 Y4 Y5 Y6
Direction d Clutch
1st ◆ ◆ K1,KV
2nd ◆ ◆ KV,K2
Forward
3rd ◆ ◆ K3,KV
4th ◆ ◆ K4,K3
1st ◆ ◆ KR,K1
Reverse 2nd ◆ ◆ KR,K2
3rd ◆ ◆ KR,K3
Neutral
Related Clutch K4 KR K1 K3 KV K2
Location F E D C B A
Measuring Point 60 55 56 58 53 57
System Pressure (bar) 16+2 16+2 16+2 16+2 16+2 16+2
14
Power train
Transmission (DL200A/250A/300A/350A)
System oil circulation (Reverse 1st)
KR K1
55 (E) 56 (D)
Driving Engage
Speed Y1 Y2 Y3 Y4 Y5 Y6
Direction d Clutch
1st ◆ ◆ K1,KV
2nd ◆ ◆ KV,K2
Forward
3rd ◆ ◆ K3,KV
4th ◆ ◆ K4,K3
1st ◆ ◆ KR,K1
Reverse 2nd ◆ ◆ KR,K2
3rd ◆ ◆ KR,K3
Neutral
Related Clutch K4 KR K1 K3 KV K2
Location F E D C B A
Measuring Point 60 55 56 58 53 57
System Pressure (bar) 16+2 16+2 16+2 16+2 16+2 16+2
15
Power train
Transmission (DL200A/250A/300A/350A)
Summary of engaging clutch.
Driving Engage
Speed Y1 Y2 Y3 Y4 Y5 Y6
Direction d Clutch
1st ◆ ◆ K1,KV
2nd ◆ ◆ KV,K2
Forward
3rd ◆ ◆ K3,KV
4th ◆ ◆ K4,K3
1st ◆ ◆ KR,K1
Reverse 2nd ◆ ◆ KR,K2
3rd ◆ ◆ KR,K3
Neutral
Related Clutch K4 KR K1 K3 KV K2
Location F E D C B A
Measuring Point 60 55 56 58 53 57
System Pressure (bar) 16+2 16+2 16+2 16+2 16+2 16+2
16
Power train
Transmission (DL200A/250A/300A/350A)
Internal section of control block.
17
Power train
Transmission (DL200A/250A/300A/350A)
Power flow.
18
Power train
Transmission (DL200A/250A/300A/350A)
LIS (Load Isolation System)
When machine travels high speed on off road with full bucket, the machine has big jerky.
LIS switch
O: Not working
I : working always C/V
II: over 6Km/h forward traveling speed, over LIS System
4Km/h reverse traveling speed only
19
Power train
Transmission (DL200A/250A/300A/350A)
LIS valve.
Accumulator : Nitrogen charged piston type.
X2
A Solenoid valve
(Accumulator)
Relief valve
Safety valve 250 bar
Safety valve
B
T
Relief valve (250 Bar)
Solenoid valve C/V
20
Power train
Transmission (DL200A/250A/300A/350A)
Operation of LIS.
Accumulator Accumulator
Transmission (DL200A/250A/300A/350A)
Operation of LIS.
Accumulator Accumulator
Transmission (DL200A/250A/300A/350A)
Safety valve.
Safety valve
Transmission (DL200A/250A/300A/350A)
Maintenance of transmission.
Towing machine.
24