Remontage von Sturmey-Archer Naben: Unterschied zwischen den Versionen

The methods of preparing some of these 'sub-assemblies' are less obvious than the processes by which they were taken apart, and as they apply equally to several hubs they are described here and not repeated in detail in the sub-sections devoted to the individual hubs.

The threaded driver (R507) and the 12-splined driver (K657) are no longer available. Hubs in which they were used must be converted by Installation the (HSA123) 3-splined driver and sprocket as a complete unit (including spacing washers and circlip).

The parts shown above are common to most models that do not incorporate a coaster brake.

pawls and springsHold the planet cage in the left-hand, with flanges (in which the pawls fit) away from the body. Place a pawl between the flanges, with the flat top surface pointing towards the right, and insert a pawl pin through the outside flange and half-way through the pawl.

*If tweezers are not available, the spring can be pushed into position with a small rod, about 1/8" in diameter. (It is easy after a little practice.)

pawls and springsHold the planet cage in the left hand with the flanges (in which the pawls fit) away from the body, or in the case of a TCW hold the planet cage pawl ring in the left hand, with the recess for the pawl pin heads towards the body.

Support the pawl pin head on a piece of flat steel held in a vise (for the FW hub) or by means of a short steel rod (in the case of the FM hub). File off any projections caused by the riveting in the case of TCW because if the face is not smooth there will be unnecessary friction when the hub is in use.

pawls and springs Place the gear ring, with the teeth downwards, on a flat surface. Place a pawl spring along the side of a pawl so that the loop is over the pin hole and the foot is under the long nose of the pawl. While holding a pawl pin ready in the left hand, grip the nose of the pawl and the foot of the spring-between the thumb and forefinger of the right hand and slide the pawl, tail first, between the flanges of the gear ring. When the hole in the pawl and the loop in the spring coincide with the holes in the flanges, push the pawl pin into position.

pawls and springs

pawls and springs First fit a pawl and pawl pin into the pawl ring and rivet the pawl pin into position. File the pawl-pin head so that it does not project beyond the face of the pawl ring. Turn the pawl back as far as it will go, and insert the tail of a spring between the pawl ring and the pawl pin, at the same time Installation the bent end of the spring under the outer end of the pawl. Then turn back the pawl to its correct position.

pawls and springs The diagram alongside clearly illustrates the correct assembling of the brake shoes, but the following points should be specially noted: It is important that brake shoes are re-assembled with the side of the brake cam with the largest flat on the inside—towards the axle. (See letter 'A'of diagram.

pawls and springs

were re-designed in 1951, and only the code number of the latest patterns are used in this catalogue. The original parts to which they correspond are:

*    K159. Shoe end cap (now K459A).

*    K160AZ. Brake arm (rear) (now K460AZ) or K457AZ.

==Quelle==