GEARBOX GR.3 -1:3.8 FEMALE ON PIN

DIMENSIONS

INSTRUCTIONS FOR USE

1. Intended use

The gearbox is a mechanical transmission that increases the rotational speed of the output shaft and enables the operation of a hydraulic gear pump via the tractor PTO shaft.

It is used for driving:

- hydraulic power units,

- forestry winches,

- wood splitters,

- other hydraulic equipment.

2. Installation position

The gearbox must be installed in the correct operating position to ensure proper lubrication of the gears. A horizontal installation is recommended, so the pump and gearbox should be aligned horizontally.

Important:

- the gearbox must always be installed so that the oil inside the housing is in contact with the gear transmission,

- long-term operation in an inverted position is not allowed,

- the gearbox must be mechanically supported (it must not hang only on the PTO shaft).

3. Direction of rotation

Before installation, check the direction of rotation of the PTO shaft and the required direction of rotation of the hydraulic pump.

Incorrect rotation direction may cause pump damage, seal failure, and poor oil flow.

4. Oil lubrication

The gearbox must be continuously lubricated with oil inside the housing to ensure proper operation of the gears. The recommended lubricant is gear oil SAE 90.

The gearbox must be filled with oil up to the control level.

Before first use, remove the filling plug, fill the unit with oil up to the level mark and close the plug.

Before each use, check the oil level. The first oil change is recommended after 50 operating hours, and afterwards every 1500 operating hours or once per year.

5. Operating temperature

The gearbox housing's normal operating temperature is between 50 and 80°C. If it exceeds 90°C, check the oil level, load and alignment.

6. Maintenance and possible issues