Category Archives: L2501

The front hydraulic block (2) is provided to take power out from the tractor to operate the hydraulic cylinders on the implement, such as front loader, front blade and so on.

The cylinder safety valve (1) is equipped on the hydraulic cylinder assembly (2). This model uses a direct acting safety valve which is suitable for less frequent operation. This valve operates to prevent damage to three point hydraulic system components only in case shock pressure is caused. For example, bouncing of heavy implements. If pressure… Read More »

The gear type hydraulic pump is adopted for these models. This pump is called as tandem type and composed two pair of gears, side plates, bushings and other components as shown in the figure. The hydraulic pump pressurize oil from transmission case through oil filter and send the oil to power steering circuit and main… Read More »

When moving the position control lever from “LIFTING” to “NEUTRAL”, the spool (1) is pushed back as shown in the figure. When the “NEUTRAL” position comes near, the tapered portion (5) of the spool (1) makes the pressure difference at the P port and C port. Therefore, the poppet 1 (4) gradually closes, and absorbs… Read More »

When the control lever is moved to “DOWN” position, the spool (1) is pushed into the position control valve body as shown in the figure. Since the spool (1) blocks the oil entering to A chamber (a), pressured oil from P port opens the unload poppet (2) and drains to T1 port. The oil remaining… Read More »

When the control lever is moved to “UP” position, the spool (1) is pulled out from the position control valve body as shown in the figure. The high-pressured oil delivered from P port flows through the oil passage of the spool (1) into the A chamber (a). Since the spring behind the unload poppet (2)… Read More »

Pressurized oil delivered from the P port, pushes the unload poppet (2) and returns to the transmission case from T1 port. Since the poppet 1 (3) is closed by the spring located behind the poppet 1 (3), the oil in the hydraulic cylinder is not drained to the transmission case. At this condition, position control… Read More »

4. When the position control lever is moved to the Lowering position, the control arm (2) rotates to the arrow.                  Therefore, the spool drive lever (1) moves around the fulcrum P and push the spool (3) and poppet 2 (4) opening        the Lowering circuit.… Read More »

1. When the position control lever is moved to the LIFT position, the control arm (2) rotates to the arrow. Therefore, the spool drive lever (1) moves around the fulcrum P and pull the spool (3) opening the LIFT circuit. 2. When the lift arm moves upward, the feedback lever shaft (4) is rotated to… Read More »

Position control is a mechanism to raise or lower the implement attached to the tractor in proportion to the movement of the position control lever (1). The implement can be positioned at any height by moving the position control lever (1). Fine position adjustment is also easy.