Cam 13,5

Cam 41028135 with an angle of 13.5°, made of aluminium, is a drive component of the Kranzle Quadro 12/150 TST pressure washer pump. Mounted on the pump shaft, with a thrust bearing pack underneath it and the pump housing further down. The rotary motion of the motor turns the cam – its 13.5° angle generates the motion transferred through the bearing onto the pump pistons, converting shaft rotation into their reciprocating movement. The aluminium body and membership of the 41028 series distinguish this component from the steel cams of the 40460 series used in the quadro 599/799/899 TST models.

Application

The cam is mounted on the shaft of the Quadro 12/150 TST pump. With each shaft rotation, the cam, set at a 13.5° angle, moves the pistons via the thrust bearing resting against its surface. The 13.5° angle determines piston stroke, and through that, the flow rate and pressure characteristics of the Quadro 12/150 TST pump.

Replaced during cam assembly repair – after identifying wear on the cam surface, damage to the thrust bearing, or as part of a comprehensive pump drive overhaul.

Symptoms – when to replace

• Vibration or irregular pump rhythm not caused by piston seals or valves – suggesting wear of the cam working surface or thrust bearing.
• Visible signs of seizure, scoring or dull wear marks at the contact surface between the cam and the bearing.
• Axial play on the shaft with the cam fitted – wear of the component at the mounting position or in the bearing pack.
• Damage to the thrust bearing combined with signs of heating on the cam – bearing seizure frequently causes secondary damage to the cam surface.
• Corrosion or mechanical damage to the aluminium body – particularly at points of contact with the steel components of the bearing pack in the presence of moisture.

How to select the right part

Two parameters must match simultaneously: the 13.5° angle and the Quadro 12/150 TST pump model. Identify by reference number 41028135 – the 41028 series numbering encodes the angle in the last digits (41028+135 = 13.5°), allowing cross-verification when the marking on the cam itself is illegible.

Cam 41028135 (Quadro 12/150 TST) is not a substitute for the 40460 series cams used in the quadro 599/799/899 TST models – despite the similar model name, both lines have different cam numbering, different body material and different cam assembly geometry. Always check the number on the cam itself during disassembly before ordering a replacement.

Assess the condition of the bearing pack at the same time – both components work together and wear over a similar timeframe.

Compatibility

Cam for the Kranzle Quadro 12/150 TST pressure washer pump, angle 13.5°, aluminium body. Not a substitute for 40460 series cams (quadro 599/799/899 TST) or for cams of other 41028 series models. Verify the exact compatibility range by reference number 41028135.

[faq]

Is cam 41028135 (13.5°, Quadro 12/150 TST) a substitute for cam 41028613 (13.0°) if the correct variant is unavailable?|No – the 0.5° angle difference between 13.0° and 13.5° translates into a measurable difference in piston stroke and pump flow rate. In addition, both components are assigned to different pump models that may have different piston stroke requirements. Fitting a cam with the wrong angle pushes the pump's operating parameters outside the design range and can lead to motor overload or incorrect pressure. The unavailability of the correct replacement is a reason to hold the repair, not to use a different angle.

How to identify early wear of an aluminium cam before noticeable vibration appears?|During disassembly of the bearing pack, examine the cam race in raking light – early aluminium wear appears as a dull, slightly concave surface at the bearing contact point, before distinct scoring develops. Check the thrust bearing rotation by hand – resistance or grating indicates damage to one of the components. Also assess the contact between the aluminium and the steel bearing pack components for galvanic corrosion if there are signs of moisture in the pump housing.

[/faq]