Drum Flap

The shaft of the Kranzle hose reel drum is hollow – a section of hose forming part of the drum's hydraulic circuit runs inside it. Flap 40162 covers the shaft hole from the outside, closing off access to the hose concealed within.

Application

The flap is installed in the hole of the hose reel drum shaft. The shaft functions as a guide channel – a section of hose runs inside it, connecting the drum's rotating connection to the pressure washer hydraulic system. The flap closes this hole from the outside, protecting the shaft interior and the hose within from contamination and mechanical damage. Without the flap, the shaft interior remains open.

Symptoms – When to Replace

• The flap has fallen off or gone missing – the shaft hole is left uncovered.
• Cracked or broken-off flap body – the component does not stay in the shaft hole.
• The flap sits with play and falls out during drum operation – worn seating.

How to Select the Correct Part

The basis for selection is reference number 40162. The flap must fit the shaft hole in the specific Kranzle drum – the diameter of the pin or flange must match the hole. When replacing, compare the new flap with the removed one in terms of seating geometry. If the flap has gone missing, verify the selection by reference number or the drum service diagram.

Compatibility

Kranzle catalogue part. Used among others in hose reel drums fitted to Kranzle pressure washers with a shaft that routes the hose internally. Verify compatibility with a specific drum model using reference number 40162.

[faq] Does the flap seal the shaft or only cover it?|Flap 40162 serves as a cover, not a hydraulic seal. The hose running inside the shaft is a pressure component of the drum hydraulic circuit – its integrity is provided by the connections and seals at both ends of the circuit, not by the flap. The flap only closes the external opening of the shaft.

Can the hose concealed inside the shaft be inspected without dismantling the drum?|After removing the flap, the shaft hole provides limited visual access to the interior. A full inspection of the hose inside the shaft requires drum disassembly. If the drum shows a hydraulic leak with no visible external source, it is worth checking the condition of the hose inside the shaft with the drum open.

Is the flap attachment method the same across all Kranzle drums?|No – depending on the drum model, the flap may be press-fitted, screw-mounted, or clip-fastened. Before removal, check whether the flap has a visible screw or is a press-fit component. Attempting to pull out a screw-mounted flap can damage the shaft hole.

What should be checked if the new flap does not sit stably in the shaft hole?|The cause is most commonly a worn or chipped shaft hole. If the edge of the hole is damaged, replacing the flap alone will not restore stable seating. In that case, inspect the condition of the shaft hole and assess whether installation using technical adhesive is feasible, or whether shaft replacement is necessary. [/faq]