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11 wrz 2023 · The maximum jumping clearance should be less than the clearance between the steering gear ram and the tiller arm to prevent steering gear damage. Increasing jumping clearance could give an initial indication of excessive thrust bearing wear; thus, measuring rudder drop, in that case, is a must.
18 paź 2008 · The jumping clearance is required to prevent damage to the steering gear, regardless of rudder type. Therefore the maximum jumping clearance should always be less than the clearance between tiller and steering gear.
14 sty 2013 · Dimension (1) must be substantially greater than jump clearance (4) to protect steering gear from damage in the event of grounding of skeg or rudder. Dimension (2) should be sufficient to cater for wear in carrier bearing and substantially greater than riding washer clearance (5).
The maximum clearance for synthetic materials should be in accordance with the manufacturer’s recommendations. Alternatively, the maximum clearance for both metallic and synthetic bearings should not exceed 5 + 0,002 D mm, where D is the diameter of the stock or pintle over the liner in mm.
30 wrz 2019 · Dimension (1) must be substantially greater than jumping clearance (4) to protect steering gear from damage in the event of grounding of skeg of rudder. Dimension (2) should be adequate to cater for wear in carrier bearing and substantially greater than riding washer clearance (5).
At first the rudder bearing clearance (Between inner diameter of bush and rudder stock or pintle) should be measured when inspecting the condition of the bearing. If an abnormality is found, the rudder should be lifted or removed, depending on its construction. In conventional rudders with upper and lower pintles or lower pintle only,
