760 V6-2849cc 2.8L SOHC B28F (1983)
Brake Rotor/Disc: Service and Repair
Replacement
Front
FRONT BRAKE DISC, REPLACEMENT (ALL VERSIONS)
General
Note: It is essential that the following instructions be followed to ensure satisfactory operation.
When replacing a front brake disc, the position in which the disc is installed on the hub must be determined by measurement if the hub is not marked.
The purpose is to minimize the lateral runout of the disc (max. 0.06 mm = 0.0024 inch) when the component is mounted in position. Gauge ring
9995419 must be used instead of the wheel when measuring the lateral runout. The ring should be mounted on the hub and the nuts tightened to 85
Nm (63 ft. lbs.). If runout is excessive, a variation in thickness may develop as the disc becomes worn, leading to brake vibrations.
Note: Marked 'hub units' were introduced on production models as from week 11, 1990 and as spare parts as from week 17, 1990. (See left-hand
illustration below.) The type of marking may differ; the component may be identified either by a paint spot or by a physical marking.
Since the disc position is not marked on spare hubs for 1987 and earlier models, this must be carried out as part of the replacement procedure. The
marking may then be used when replacing the disc subsequently.
All brake disc markings are scribed on the component as shown in the right-hand illustration below. Care must be taken, when mounting the disc on
the hub, to ensure that the scribed mark is as close as possible to the hub marking as permitted by the wheel studs.
This type of 'matching' minimizes brake disc runout.
The procedure for replacing front brake discs on cars with separate (spare) hubs (models to 1987 inclusive).
The procedure for replacing front hub units (models from 1988 on).
Front brake disc, installation/replacement
Applicable to cars with replacement 2-piece brake disc/hub (models to 1987 incl.)
Special tools: 999 2715, 5418
Note: There were cars prior to model year 1986 that were equipped with separate hubs (i.e. models with the earlier type of integral brake disc and hub
that were a one piece hub and rotor). If rotors are needed to be replaced on this type car, they must be replaced with the two piece type rotor and hub
assemblies, as these rotor assemblies are no longer available from Volvo OEM. The replacement units are two piece and will interchange with the
earlier one piece hub and rotor unit previously used.
L1. Jack up and support car. Remove wheel
