5-10t Internal Combustion Counterbalance Forklift Truck Operation & Maintenance Manual
3. Transmission Device
Transmission device is mainly comprised of two parts including torque converter and
transmission.
Refer to Table 3-1 for main parameters, and refer to Fig 3-1 for structure of transmission
device.
Table 3-1
Item Unit
Structural Feature or Parameter
Type
Three-element, Single-stage, and
2-phase Type
Circulating Circle Diameter
and Torque Conversion Ratio
12.5’’(Φ315)Torque Conversion
Ratio 3.1
Torque
Converter
Set Oil Feed Pressure MPa
0.5～0.7
Type
Internal Gear Pump, and
Transmission Power Output
Oil Feed
Pump
Flow Rate 1/min
40(2000rpm, at 2MPa)
Type Power Gear Shift
Number of Transmission Gears
2 Gears for Front and Rear,
Respectively
Speed Ratio (The Same for
Both Front and Rear)
I：1.852 / II：0.642
Friction Plate ㎜
Outer Diameter Φ134/ Inner
Diameter Φ90/ Thickness 2.8
Friction Surface
Area
㎝
2
77.4
Transmission
Hydraulic
Clutch
Set Pressure MPa
1.2～1.5
Mass ㎏ About 295
Oil Quantity 1 About 20
Oil Brand
6# Torque converter oil(Equivalent
to SAE10W)
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