Customer Service Department: Komatsu Utility Europe Pag. 1 Di 41 Wett001304
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WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 1 di 41
Transmission
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 2 di 41
Transmission : Torque Converter - View
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 3 di 41
Transmission TLB1 (4WD)
POWER-SHUTTLE FORWARD AND REVERSE CLUTCH PACK + FULLY SYNCHRONIZED 4 GEARS
WORKING SPEED
Km/h
6,5-12
Gears
Automatic Integral Braking System Differential Lock System
TRAVEL SPEED
Km/h
23-40
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 4 di 41
1°
2°
3°
4°
No
No
No
Yes
Yes
Yes
Yes
No
Transmission TLB1 (4WD)
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 5 di 41
Transmission TLB1 (4WD)
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 6 di 41
Transmission TLB1 (4WD) : Front View
Oil pump group: max pressure 16 bar Spin-on filter (nom. 10µm)
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 7 di 41
Transmission TLB1 (4WD) : Rear View
Dipstick pipe connecting line
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 8 di 41
Transmission TLB1 (4WD) : Right Side View
Breather plug
Oil outlet port (to cooler)
Speed shift lever
4th gear sensor
Oil inlet port (from cooler)
SAE 3 torque converter housing
Magnetic oil drain plug
Suction filter WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 9 di 41
Transmission TLB1 (4WD) : Top View Holes eyebolt threads for lifting Reverse shift solenoid valve Forward shift solenoid valve RWS clutch pressure check point (11.0-13.0 bar) Max pressure in NEUTRAL (0.3 bar)
Converter pressure check point (0.5-9.0 bar)
FWD clutch pressure check point (11.0-13.0 bar) Max pressure in NEUTRAL (0.3 bar)
FWD/RWD clutch pressure check point (11.0-13.0 bar) Max pressure in NEUTRAL (0.3 bar)
Oil cooler back pressure check point FWD/RWS clutch position (0.5-3.5 bar) NEUTRAL clutch position (0.5-5.0 bar) 4WD shift solenoid valve Oil thermostat WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 10 di 41
4WD pressure check point at 900 RPM (13.0-14.0 bar) at 2200 RPM (13.0-15.5 bar)
Transmission TLB1 (4WD) : Hydraulic Scheme
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 11 di 41
Transmission TLB1 (4WD) : Hydraulic Scheme Ref. Table
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 12 di 41
Transmission TLB1 (4WD) : Hydraulic Scheme Low pressure
FORWARD
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 13 di 41
Pump pressure
Modulating pressure
Pump pressure
Lubricating pressure
Transmission TLB1 (4WD) : Hydraulic Scheme Low pressure
CHANGING DIRECTION FROM FWD TO REV.
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 14 di 41
Pump pressure
Modulating pressure
Pump pressure
Lubricating pressure
Transmission TLB1 (4WD) : Hydraulic Scheme Low pressure
REVERSE
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 15 di 41
Pump pressure
Modulating pressure
Pump pressure
Lubricating pressure
Transmission TLB1 (4WD) : Transmission Charge Pump
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 16 di 41
Transmission TLB1 (4WD) : Transmission Charge Pump
Oil filter relief valve
Torque converter relief valve
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 17 di 41
Transmission TLB1 (4WD) : Control Valve
FWD/REV selection valve
Modulation relief valve
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 18 di 41
Transmission TLB1 (4WD) : Control Valve
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 19 di 41
Transmission TLB1 (4WD) : 4WD Solenoid Valve
Four wheel drive priority valve
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 20 di 41
Transmission TLB1 (4WD) : Workshop Data
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 21 di 41
Transmission TLB1 (4WD) : Workshop Data
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 22 di 41
Transmission TLB2
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 23 di 41
Transmission TLB2 : Front View Oil pump group (19 Lt. min. total pump flow at 900 rpm measure before spin-on filter)
Spin-on filter (nom. 10 µm)
Pipe oil fill/dipstick interface
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 24 di 41
Transmission TLB2 : Rear View
On/off solenoid valve (12V DC – 20 W)
FWD/RWS proportional pressure reducing valves (12V DC – 7 Ohm)
Boom lock oil return
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 25 di 41
Transmission TLB2 : Right Side View SAE 3 torque converter housing
Torque converter SACHS W300
Torque converter inlet press. check port 900 rpm 3.0 bar 2200 rpm 9.0 bar
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 26 di 41
Transmission TLB2 : Left Side View
Oil pressure port 900 rpm 14 bar 2200 rpm 17 bar
Oil inlet port from cooler
Suction filter (nom. 250 µm)
Magnetic oil drain plug (SW ½”) WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 27 di 41
Transmission TLB2 : Top View
Oil outlet port cooler
Lub pressure check port on NEUTRAL clutch position (1-5 bar) on FWD/RWS clutch position (1-5 bar). Oil outlet port to brake tank
Breather plug
13
Oil thermostat
FWD clutch pressure check point 900 rpm 13.5 bar 2200 rpm 16.5 bar max pressure in NEUTRAL (0.3 bar)
Control valve supply pressure check port (14.0-17.0 bar)
RWS clutch pressure check point 900 rpm 13.5 bar 2200 rpm 16.5 bar max pressure in NEUTRAL (0.3 bar) Holes eyebolt threads for lifting WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 28 di 41
Transmission TLB2 : Hydraulic Scheme
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 29 di 41
Transmission TLB2 : Hydraulic Scheme Ref. Table
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 30 di 41
Transmission TLB2 : Hydraulic Scheme Transmission in “NEUTRAL”
Low pressure Pump pressure
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 31 di 41
Transmission TLB2 : Hydraulic Scheme Travelling 3rd - FWD
Low pressure Pump pressure
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 32 di 41
Transmission TLB2 : Control Valve Group
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 33 di 41
Transmission TLB2 : Control Valve Group FWD/RVS clutch – 4WD engag./diseng.
Ramp valve
Solenoid valve 1st; 2nd; 3rd and 4th gear clutch
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 34 di 41
Transmission TLB2 : Control Valve Functionality Travelling 1st - FWD
LOW PRESSURE MAIN PRESSURE BALANCED PRESSURE
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 35 di 41
Transmission TLB2 : Modulation Valve Ramp
P Peng.
2
during travelling 1
during engagment
t
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 36 di 41
Transmission TLB2 : Control Valve Functionality
1 LOW PRESSURE MAIN PRESSURE INCREASING MAIN PRESSURE
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 37 di 41
Transmission TLB2 : Control Valve Functionality
2 LOW PRESSURE MAIN PRESSURE BALANCED PRESSURE
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 38 di 41
Transmission TLB2 : Transmission Pump
Suction Filter
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 39 di 41
Transmission TLB2 : Workshop Data
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 40 di 41
Transmission TLB2 : Workshop Data
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 41 di 41
Customer Service Department Pag. 1 di 41
Transmission
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 2 di 41
Transmission : Torque Converter - View
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 3 di 41
Transmission TLB1 (4WD)
POWER-SHUTTLE FORWARD AND REVERSE CLUTCH PACK + FULLY SYNCHRONIZED 4 GEARS
WORKING SPEED
Km/h
6,5-12
Gears
Automatic Integral Braking System Differential Lock System
TRAVEL SPEED
Km/h
23-40
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 4 di 41
1°
2°
3°
4°
No
No
No
Yes
Yes
Yes
Yes
No
Transmission TLB1 (4WD)
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 5 di 41
Transmission TLB1 (4WD)
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 6 di 41
Transmission TLB1 (4WD) : Front View
Oil pump group: max pressure 16 bar Spin-on filter (nom. 10µm)
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 7 di 41
Transmission TLB1 (4WD) : Rear View
Dipstick pipe connecting line
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 8 di 41
Transmission TLB1 (4WD) : Right Side View
Breather plug
Oil outlet port (to cooler)
Speed shift lever
4th gear sensor
Oil inlet port (from cooler)
SAE 3 torque converter housing
Magnetic oil drain plug
Suction filter WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 9 di 41
Transmission TLB1 (4WD) : Top View Holes eyebolt threads for lifting Reverse shift solenoid valve Forward shift solenoid valve RWS clutch pressure check point (11.0-13.0 bar) Max pressure in NEUTRAL (0.3 bar)
Converter pressure check point (0.5-9.0 bar)
FWD clutch pressure check point (11.0-13.0 bar) Max pressure in NEUTRAL (0.3 bar)
FWD/RWD clutch pressure check point (11.0-13.0 bar) Max pressure in NEUTRAL (0.3 bar)
Oil cooler back pressure check point FWD/RWS clutch position (0.5-3.5 bar) NEUTRAL clutch position (0.5-5.0 bar) 4WD shift solenoid valve Oil thermostat WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 10 di 41
4WD pressure check point at 900 RPM (13.0-14.0 bar) at 2200 RPM (13.0-15.5 bar)
Transmission TLB1 (4WD) : Hydraulic Scheme
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 11 di 41
Transmission TLB1 (4WD) : Hydraulic Scheme Ref. Table
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 12 di 41
Transmission TLB1 (4WD) : Hydraulic Scheme Low pressure
FORWARD
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 13 di 41
Pump pressure
Modulating pressure
Pump pressure
Lubricating pressure
Transmission TLB1 (4WD) : Hydraulic Scheme Low pressure
CHANGING DIRECTION FROM FWD TO REV.
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 14 di 41
Pump pressure
Modulating pressure
Pump pressure
Lubricating pressure
Transmission TLB1 (4WD) : Hydraulic Scheme Low pressure
REVERSE
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 15 di 41
Pump pressure
Modulating pressure
Pump pressure
Lubricating pressure
Transmission TLB1 (4WD) : Transmission Charge Pump
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 16 di 41
Transmission TLB1 (4WD) : Transmission Charge Pump
Oil filter relief valve
Torque converter relief valve
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 17 di 41
Transmission TLB1 (4WD) : Control Valve
FWD/REV selection valve
Modulation relief valve
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 18 di 41
Transmission TLB1 (4WD) : Control Valve
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 19 di 41
Transmission TLB1 (4WD) : 4WD Solenoid Valve
Four wheel drive priority valve
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 20 di 41
Transmission TLB1 (4WD) : Workshop Data
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 21 di 41
Transmission TLB1 (4WD) : Workshop Data
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 22 di 41
Transmission TLB2
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 23 di 41
Transmission TLB2 : Front View Oil pump group (19 Lt. min. total pump flow at 900 rpm measure before spin-on filter)
Spin-on filter (nom. 10 µm)
Pipe oil fill/dipstick interface
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 24 di 41
Transmission TLB2 : Rear View
On/off solenoid valve (12V DC – 20 W)
FWD/RWS proportional pressure reducing valves (12V DC – 7 Ohm)
Boom lock oil return
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 25 di 41
Transmission TLB2 : Right Side View SAE 3 torque converter housing
Torque converter SACHS W300
Torque converter inlet press. check port 900 rpm 3.0 bar 2200 rpm 9.0 bar
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 26 di 41
Transmission TLB2 : Left Side View
Oil pressure port 900 rpm 14 bar 2200 rpm 17 bar
Oil inlet port from cooler
Suction filter (nom. 250 µm)
Magnetic oil drain plug (SW ½”) WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 27 di 41
Transmission TLB2 : Top View
Oil outlet port cooler
Lub pressure check port on NEUTRAL clutch position (1-5 bar) on FWD/RWS clutch position (1-5 bar). Oil outlet port to brake tank
Breather plug
13
Oil thermostat
FWD clutch pressure check point 900 rpm 13.5 bar 2200 rpm 16.5 bar max pressure in NEUTRAL (0.3 bar)
Control valve supply pressure check port (14.0-17.0 bar)
RWS clutch pressure check point 900 rpm 13.5 bar 2200 rpm 16.5 bar max pressure in NEUTRAL (0.3 bar) Holes eyebolt threads for lifting WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 28 di 41
Transmission TLB2 : Hydraulic Scheme
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 29 di 41
Transmission TLB2 : Hydraulic Scheme Ref. Table
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 30 di 41
Transmission TLB2 : Hydraulic Scheme Transmission in “NEUTRAL”
Low pressure Pump pressure
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 31 di 41
Transmission TLB2 : Hydraulic Scheme Travelling 3rd - FWD
Low pressure Pump pressure
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 32 di 41
Transmission TLB2 : Control Valve Group
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 33 di 41
Transmission TLB2 : Control Valve Group FWD/RVS clutch – 4WD engag./diseng.
Ramp valve
Solenoid valve 1st; 2nd; 3rd and 4th gear clutch
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 34 di 41
Transmission TLB2 : Control Valve Functionality Travelling 1st - FWD
LOW PRESSURE MAIN PRESSURE BALANCED PRESSURE
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 35 di 41
Transmission TLB2 : Modulation Valve Ramp
P Peng.
2
during travelling 1
during engagment
t
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 36 di 41
Transmission TLB2 : Control Valve Functionality
1 LOW PRESSURE MAIN PRESSURE INCREASING MAIN PRESSURE
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 37 di 41
Transmission TLB2 : Control Valve Functionality
2 LOW PRESSURE MAIN PRESSURE BALANCED PRESSURE
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 38 di 41
Transmission TLB2 : Transmission Pump
Suction Filter
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 39 di 41
Transmission TLB2 : Workshop Data
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 40 di 41
Transmission TLB2 : Workshop Data
WETT001304 Komatsu Utility Europe
Customer Service Department Pag. 41 di 41
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