Front and Rear Seats
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Section S13 Front and rear seats Contents Pages Rolls- Royce Bentley Silver Sikr Eight Mulsanne/ Turbo R Spirit Spur Mulsanne S Front seat cushion and valance assembly - To remove and fit Front seat arm rest - To remove and fit Front seat head restraint -To remwe and fit Front seat squab - To remove and fa Fmnt seat complete assembly - To rernwe Front seat complete assembly - TO fit Front seat mechanism assembly - Repsir procedure Rear seat cushion - To remove and fit Rear seat squab - To remove and fi Centre arm rest - To remove and fit Rear seat head rest - To remove and fit 3/88 TSD 4700 Section S13 Front and rear seats Introduction slightly to disengage the upper retaining brackets then Prior to commencing work ensure that a suitably remove. prepared area is available to store any items of trim. 2. Remove the two screws and cup washers litern 2) etc.. that are removed. securing the cushion valance to the seat base. 3. From underneath the rear of the seat, unhook the Front seat cushion and valance assembly - To cushion retaining strap (item 3). Lift the front of the remove and fit (seefig. S1 3-1 1 cushion to disengage the retaining pegs, then unhook 1. Remove the two screws and cup washers {item 1) the front of the retaining strap and remove the cushion. securing the squab back panel. Lift the back panel 4. To fit the cushion reverse the removal procedure Fig, St3-1 Front seat trim and mounting arrangement a 370,5 mm (14.600 in) b 365.0 mm 114.370 in1 3/88 . TSD 4700 ensuring that the retaining pegs locate inthe holes cushion to disengage the retaining pegs, then unhbak situated at the front of the seat base. the front of the retaining strap and remove the cushion. 4. Turn the ignition key to the ACC or RUN position. Front seat arm rest - To remove and fit Then, using the sear adjustment mntrols, move the seat (see fig. S1 3-1 1 forward to the full extent of its travel. 1. Remove the two screws and cup washers (item 1 1 Warning Ensure that your hands are kept clear of the securing the squab back panel. Lift the back panel seat mechanism during this operation. slightly to disengage the upper retaining brackets then 5. Using a Tom' head socket driver. rernwe the two remove.. exposed socket scm(item 7) securing the rear of the 2. Carefully insert a slim 1 5/16 A-F spanner between seat. the seat squab and the arm rest, then mlease the Similarly. move the seat fully rearwards and remove shouldered bott {itern 4).Remove the arm rest. the socket screws [item 8)securing the front of the 3. Each arm rest is made up of an upper and lower seat. Note the position and quantity of any spacing trimmed section which are clipped together. To open washers situated between the seat base and the floor. the arm rest, carefully insert a smali steel rule, or a 6. Switch offthe ignition and disconnect the battery. similar tool, at the rear of the am rest between the 7. Disconnect the electrical plugs and sockets upper section and the beading attached to the lower (item 9). section. Carefully prise the two sections apart. 8. With the help of an assistant, carefdly remove the 4. To assemble the arm rest, engage the clips at the seat assembly from the car. front of each section. then bring the rear of both sections together. Insert a small steel rule and press the Front seat complete assembly - To fit retaining clip downwards until the two sections engage. (see fig. St3-1) 5. To fit the arm rest reverse the removal procedure. Reverse the procedure given for removal noting the following. Front seat head restraint - To remove and fit 1. It is important to ensure that any spacing washers (-fig. S13-1) situated between the seat base and the floor are t . Remove the two screws and cup washers (item 1 ) replaced in their original positions. securing the squab back panel. Lift the back panel 2. Prior to tightening the seat base securing socket slightly to disengage the upper retzining brackets then screws, ensure that the distance between the left-hand remove. and right-hand seat slide is correct (see fig. S1 3-1, 2. lift the head restraint to the full extent of its inset A). adjustment. 3. Torque tighten the socket screws {items 7 and 81 to 3. Locate the head restraint retaining clips situated at between 48 Nm and 54 Nm (4,9 kgf m and 5.5 kgf m; the base of each support tube (item 5). Push both clips 36 Ibf ft and 40 1M ft). The socket screws should be clear of the support legs then lift the head restraint out tightened in the following sequence. Rear inboard, rear of the seat squab. outboard, front inboard, and front outboard. 4. To fit the head restraint, simply tocate the support 4. When fitting the seat cushion, ensure tha* the legs into the top of the seat squab and push down until retaining pegs locate in the holes situated at the front of the retaining clips engage. The head restraint can then the seat base. be adjusted vertically to a desirable position. 5. If the seat has been electrically disconnected for more than 4 weeks the seat adjustment memory Front seat squab - To remove and fit (see fig. S 1 3-1 ) function (if fitted) will be lost. if this has occurred, it will 1. Remove the two screws and cup washers (item 1) be necessary to reactivate the memry as follows. securing the squab back panel. Lift the back panel Warning When the seat memory is reactivated, the slightly to disengage the upper retaining brackets then seat will move immediately and automatically remove. to a set adjustment position. Take care 2. Remove the four M8 setscrews and washers therefore to avoid contact with the seat when (item 6) securing the squab frame to the seat base carrying out the following procedure. assembly. Carefully withdraw the seat squab assembly. Ensure that the gear range selector lever is in the 3. To fit the seat squab reverse the removal park position, then turn the ignition key to either the procedure. ACC or RUN position. Depress the memory (MEM) and the numbered Front seat complete assembly - To remove store/recall buttons corresponding to the seat to be [see.fig. S1 3-1) activated in the following sequence. MEM five times. l. Remove the two screws and cup washers {item 1) 4 once. 3 twice. 4 once. To ensure activation of the securing the squab back panel. Lift the back panel memory this operation should be completed within slightly to disengage the upper retaining brackets then approximately five seconds. remove. 2. Remove the two screws and cup washers (item 2) Front seat mechanism assembly - Repair procedure securing the cushion valahce to the seat base. The operation of each front seat is controlled by four 3. From'underneaththe rear of the sear. unhook the identical electric motors. Each motor is connected, via cushion retaining strap (item 3). Lift the front of the driw cables. to two gearboxes mounted on opposite sides ofthe seat mechanism base. The gearboxes movement. In the event of a fault developing in the operate in pairs providing four adjustment positions. operation of a seat mechanism reference should be seat squab rake, front tilt, rear tilt. and forward/rearmd made to the following fault diagnosis chart. Fault diagnosis fault Podble cause l Remedy 'l. Seat 'twisting' during travel a. Broken drive cable. a. Renew the drive cables in pairs. i.e. I {indicating loss of drive to I motor set (see Drive cables - 1 one gearbox). To renew}. Note On a number of early cars, black coloured inner cables were fitted. It is advisable to replace these with gold coloured inner cables as a complete seat set. l b. Gearbox failure. b. Renew the gearbox. [see Gearbox - To renew). 2. Lass of movement in any a. Motor failure. a Test the motor one of the four adjustment Note Each motor is (refer to TSD 4701 positions. e.g. front tilt, protected by an Electrical Manual). rear tiit, etc. internal therma t cut-out. Therefore, ensure that the mator has not l overheated. a. Gearbox failure. a. If the gearbox centre shaft is Check if the gearbox centre revolving. renew the gearbox shaft is revolving. (see Gearbox - To renew). Mote On the front tilt, rear tilt, and forward/rearward gearboxes f may be possible to reduce the noise level by adjusting the centre shaft ntrt (see fig. S1 3-2. item 1). Take care not to overtighten the nut during this operation. If the noise level does not improve, renew'the gearbox. 4. Unacceptable motor noise. a. Motor failure. a. Renew the motor (see Motor - To renew). 5. General noisy operation of the a. Loose motor. I a. Secure correctly. seat mechanism. b. Loose seat memory b. Secure correctly. electronic control unit (if fitted). l 1 1 c. Incorrectly positioned e Reposition and/or reclip. 4 or unelipped drive cables. P 6. Excessive free movement Refer to the information under the of the seat squab. I - I heading Seat squab rake adjustment. 3/88 . TSD 4700 Fig. S13-2 Front seat mechanism Drive cables - To renew (see fig. S 13-2) Front tilt gearbodmr tilt gearbox - To renew The following procedure can be adopted for any one of (see fig- S13-2, items 7 and 8) the eight drive cables fitted to a seat mechanism.