Bolt designations
Most of the nuts and bolts used in the New Range Rover are replaced with new ones after they have been loosened or loosened. Detailed information is provided in the relevant sections of this manual.
WARNING: All threaded parts of the rear suspension mounting must be replaced with new ones after unscrewing.
All bolts or screws with ISO metric threads made of steel and with an outer diameter greater than 6 mm have the ISO M or M designation stamped on the head of the bolt.
In addition to the manufacturer's designation, the bolt head also has a strength index designation, for example: 8.8; 10.9; 12.9; 14.9. Some bolts have the designation M and the strength index stamped on the edges of the hexagon.
Bolts protected with anaerobic sealant
An anaerobic sealant is applied to the threads of a bolt or screw in a special way during manufacture. These bolts can be identified by a colored ribbon that extends 360 degrees along the circumference of the bolt's shank. The anaerobic sealant is activated during the assembly process of the assembly, then hardens as a result of chemical transformations. This provides a secure fixation of the bolt against loosening.
Unless otherwise noted, anaerobic sealant bolts that are undamaged can be reused. To do this, do the following:
- Clean the bolt body and the threaded hole of anaerobic sealant residues.
- Clean the threads of oil.
- Coat the threads with the recommended sealant.
A bolt with anaerobic sealant can be replaced with a similar bolt, provided that a special anaerobic sealant is used during installation.
Self-locking bolts
Self-locking screws and bolts (I mean bolts with nylon insert) can be reused, provided that an increase in resistance to screwing is felt when starting to screw in the insert part of the bolt.
Self-locking bolts or screws have a nylon insert that is installed during the bolt manufacturing process. These bolts can be identified by a colored inset that extends half the length of the bolt's shank.
Another type of self-locking bolts are bolts with threads that slightly mismatch the threads of the mating hole or nut into which the bolt is threaded.
DO NOT reuse self-locking bolts to assemble critical connections (engine bearings, flywheel bolts). Always replace a self-locking bolt, screw or nut with a similar part.
DO NOT install conventional fasteners in place of the designed self-locking nuts, bolts or screws.
Nut designation
Nuts with metric ISO threads and having a strength index of 8, 12 or 14 are indicated by applying the index to one of the ends of the nut or to one of the faces of the hexagon. Some nuts that have a strength index of 4, 5, or 6 also have a strength index designation. Part of the nuts may be marked with the symbol "M" on the end, which is opposite to the end with the applied strength index. This symbol indicates a metric thread.
Instead of indicating the strength index, the so-called "hourly" method of specifying the strength index. A mark is applied to the outer chamfer or end of the nut, which corresponds to the readings of the clock hands. Indications "hours" and are the designation of the strength index.
A dot is used to indicate the 12 o'clock mark, and (strength index values) notch is used. If the strength index is greater than 12, then a double dot is used to indicate the 12 o'clock mark.
When tightening "crown" nut with cotter pin slots, never loosen the nut to align the cotter pin holes. An exception is the case when this is provided for by the adjustment instruction. If you can't align the cotter pin holes, try replacing the washer or nut, or sanding the existing washer.
If the bearing preload is adjusted by means of a nut, then the nut must be tightened in accordance with a particular instruction.
Self-locking nuts
Self-locking nuts (refers to nuts with a nylon insert or nuts with increased thread friction) can be reused, provided that an increase in resistance to screwing is felt at the moment the insertion part of the nut begins to be screwed.
When self-locking nuts are completely unscrewed, it is recommended to replace them with new ones of similar design.
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