Range Rover Evoque: Bolt and Nut Identification

Range Rover Evoque. Standard Workshop Practices

An ISO metric bolt or screw made of steel and larger than 6 mm in diameter can be identified by either of the symbols ISO M or M embossed or indented on top of the bolt head.

In addition to marks identifying the manufacturer, the top of the bolt head is also marked with symbols indicating the strength grade e.g. 8.8, 10.9, 12.9, 14.9. Alternatively, some bolts and screws have the M and strength grade symbol stamped on the flats of the hexagon.

Encapsulated ('Patched') bolts and screws

Range Rover Evoque. Standard Workshop Practices

Encapsulated ('patched') bolts and screws have a thread locking agent applied to the threads during manufacture. Most thread locking agents are colored, the band of color extending for 360 degrees around the thread. Some locking agents however, are neutral in color and may not be so easily identified apart from a slightly darker area of thread where the locking agent has been applied. The locking agent is released and activated by the tightening process and is then chemically cured to provide the locking action.

Self-locking bolts and screws

Range Rover Evoque. Standard Workshop Practices

Unless stated in a specific repair procedure, self-locking bolts and screws i.e. nylon patched or trilobular thread can be reused provided that resistance is felt when the locking portion enters the female thread.

Nylon patched bolts and screws have a locking agent either applied to, or inserted in the threaded portion. They are identified by the presence of a colored section of thread extending approximately 180 degrees around the thread or by a colored plug inserted into the bolt.

Trilobular bolts have a special thread form which creates a slight interference with the thread of the hole or nut into which it is screwed.

Range Rover Evoque. CAUTIONS CAUTION: Do Not reuse self-locking fasteners in critical locations e.g. drive plates/flywheel or engine bearings. Do not install non self-locking fasteners where a self-locking fastener is specified.

Trilobular bolts should not be used as a substitute for patched bolts.

Nut identification

Range Rover Evoque. Standard Workshop Practices

A nut with an ISO metric thread is marked on one face or one of the hexagonal flats with the strength grade symbol 8, 12, 14. Some nuts with the strength grade 4, 5 or 6 are also marked and some have the metric symbol M on the hexagonal flat opposite the strength grade marking.

A clock face system is sometimes used as an alternative method of indicating the strength grade. The external chamfers or a face of the nut is marked in a position relative to the appropriate hour mark on a clock face to indicate the strength grade.

A dot is used to locate the 12 o'clock position and a dash to indicate the strength grade. If the grade is above 12, two dots identify the 12 o'clock position.

When tightening a slotted or castellated nut, never loosen it to insert a split pin except where specified as part of an adjustment procedure. If difficulty is experienced in correctly positioning the slot, alternative washers or nuts should be selected.

Where a nut is tightened to adjust or maintain bearing pre-load, the tightening procedure must be adhered to.

Self-locking nuts

Range Rover Evoque. Standard Workshop Practices

Unless stated otherwise, self-locking nuts once removed must be discarded and new nuts of the same type and strength grade installed.

Ball and Roller Bearings

When removing and installing bearings, make sure that the following practices are observed to make sure component serviceability:

Range Rover Evoque. CAUTIONS CAUTION: Service tools have been developed for removing the majority of bearings; these must always be used where specified.

Range Rover Evoque. Standard Workshop Practices

Range Rover Evoque. CAUTIONS CAUTION: Service tools have been developed for installing the majority of bearings; these must always be used where specified.

Range Rover Evoque. CAUTIONS CAUTION: When a waxed oil seal (installed dry) type of oil seal is to be installed, take great care that grease does not contaminate the running surface of the seal.

Brake Pads and Linings

Always install the correct grade and specification of brake pads and linings. When replacing these items, always replace as complete axle sets.

Brake Hydraulics

Always observe the following recommendations when working on the braking system:

Range Rover Evoque. WARNINGS WARNING: Do not intermix brake fluid of different specifications.

READ NEXT:

 Pipes and Hoses

When removing or installing flexible hydraulic pipes and hoses, make sure that the following procedures are observed to make sure component serviceability: Prior to removal, clean area around hose

 Electrical Precautions

General The following guidelines are intended to make sure the safety of the operator whilst preventing damage to the electrical and electronic components of this vehicle. Equipment Prior to commenci

 Supplementary Restraint System (SRS) Precautions

WARNING: Do not install rear facing child seats in the front passenger seat. The SRS contains components which are potentially hazardous to service personnel if not handled correctly. The following

SEE MORE:

 Dynamic stability control (amber)

Dynamic stability control (amber) Illuminates briefly when the ignition is switched on and extinguishes when the engine is started. If the lamp flashes while driving, the DSC system is active. If the lamp illuminates continuously while driving, there is a fault with the DSC system. The vehi

 Digital radio reception

DAB radio can significantly increase the number of radio channels/stations available. The DAB signals are transmitted to most major cities, towns and motorway networks. Digital radio is transmitted from regional transmitters. Some local channels are not available outside the range of their tr

© 2011-2020 Copyright www.rrevoque.org