PGA part number M0034.

Hydrostatic Drive Pump Coupling Splines & Splined Inserts for Merlo Telehandlers

Spline stripping, tooth rounding, or internal fretting wear on the drive hydraulic pump coupling splined insert leads to immediate loss of drive torque transmission between the internal combustion engine and the hydrostatic pump. This fault causes driveline slippage, metallic chatter around the flywheel housing, and risks damaging the pump input shaft. At PGA Technika, we supply heavy-duty Merlo drive pump coupling splined inserts engineered to restore positive mechanical drive connection.

Our product range: Splined inserts, drive sleeves, and hydrostatic coupling parts

We supply high-quality replacements and original Merlo parts manufactured for exceptional shear strength and torsional endurance:

• Hydrostatic pump coupling splined inserts – precision-machined internal splined hubs directly meshing with the hydrostatic pump input shaft.

• High mechanical resistance components – heat-treated alloy steel splines engineered to resist tooth wear, fretting corrosion, and extreme torsional shock loads.

• Splined drive sleeves & flywheel hubs – coupling sleeves and drive hubs connecting the engine flywheel assembly to the hydraulic drive unit.

• Damping elements & flexible inserts – shock-absorbing inserts dampening engine torque spikes to protect internal spline teeth from premature failure.

We supply Merlo telehandler parts compatible with Turbofarmer, Panoramic, Multifarmer, Roto, and compact series models.

Fast dispatch (24-48h) & downtime reduction

Spline failure completely halts telehandler movement. Key drive pump coupling splines and inserts are held in stock for 24-48 hour dispatch. As a dedicated Merlo parts supplier, we also arrange express factory orders for specialized coupling hardware.

Accurate VIN-based Merlo parts verification

Splined inserts vary across production years by spline count, inner/outer diameters, length, and pitch profile depending on the fitted hydrostatic pump brand (e.g., Rexroth, Sauer Danfoss) and engine configuration. Utilizing the official Merlo parts catalog, our technical specialists will cross-check your machine’s VIN to guarantee a 100% correct component fitment.

Contact our technical sales team for fitment & quotes

Reach out via phone or email to check current stock availability, confirm spline insert compatibility, and receive a prompt quote:

• Phone: +48 508 508 940 / +48 508 508 561

• E-mail: biuro@pgatechnika.pl

Merlo Hydrostatic drive.

The principle of hydrostatic drive in Merlo telehandlers is based on using hydraulic systems to transmit power from the engine to the wheels or tracks of the vehicle. Hydrostatic drive allows for smooth and precise control of the Merlo telehandler’s movement and functions, making it ideal for various applications, especially in rough terrains and construction sites.

Here’s a general description of the principle of hydrostatic drive in Merlo telehandlers:

1.Engine – the hydrostatic drive system starts with an engine, which generates power and torque.
2. Hydraulic Pumps – the engine drives Merlo hydraulic pumps, which are usually variable displacement pumps. These pumps can vary the flow of hydraulic fluid depending on the desired speed and direction of the telehandler.
3. Hydraulic Motors – the pressurized hydraulic fluid from the pumps is directed to Merlo hydraulic motors that are connected to the wheels or tracks of the telehandler. These motors convert hydraulic energy back into mechanical energy, driving the wheels or tracks.
4. Merlo Variable Displacement Control – the hydrostatic drive system in Merlo telehandlers typically employs variable displacement pumps and motors. This means that the displacement (and thus the flow rate) of the hydraulic fluid can be adjusted continuously. By varying the displacement, the operator can control the speed and direction of the telehandler smoothly and precisely.
5. Forward and reverse – to move forward, Merlo operator increases the flow of hydraulic fluid to the hydraulic motors connected to the wheels or tracks in the forward direction. To reverse, Merlo operator changes the flow direction to the opposite.
6. Steering – hydrostatic drive systems also facilitate steering in Merlo telehandlers. By controlling the flow of hydraulic fluid to the hydraulic motors on the left and right sides independently, the operator can achieve differential wheel speeds and, thus, turn the telehandler smoothly.
7 Speed control – the speed of Merlo telehandler can be controlled by adjusting the flow of hydraulic fluid to the hydraulic motors. Increasing the flow increases the speed, and decreasing the flow slows down the telehandler.

The hydrostatic drive in Merlo telehandlers offers excellent maneuverability, precise control, and smooth operation, making these machines highly versatile and well-suited for various lifting and material handling tasks. The ability to control each wheel or track independently allows the telehandler to navigate tight spaces and challenging terrains with ease.