Rear Suspension

REAR HUB AND CARRIER ASSEMBLY


Remove and refit

Service tools: Hub puller JD 1D. Dummy shaft JD 14.

Removing
- Remove rear road wheel.
- Place stand under rear of car.



- Remove fulcrum shaft grease nipple (1) from hub carrier.
- Withdraw split pin. remove castellated nut and plain washer (2) from splined end of haft-shaft and fit thread protector over end of shaft.



- Fit hub puller. JD 1D (1) to rear hub and secure.
- Withdraw hub and carrier from half shaft.
- Remove hub puller from hub and carrier and recover thread protector



- Recover spacer from half shaft (1).
- Examine inner oil seal track and renew if necessary.



- Remove one nut from outer wishbone fulcrum shaft and using a hide mallet, drift out shaft (1)
- Remove hub and carrier assembly from car
- Temporarily secure retaining washers and shims using adhesive tape.

Refitting



- Fit dummy shaft tool number JD 14 (1) to hub carrier fulcrum
- Fit hub carrier 10 wishbone. positioning shims removed between carrier and wishbone
- Replace outer wishbone fulcrum shaft. displacing dummy shaft
- Secure shaft with nut.
- Tighten to correct torque.
- Refit grease nipple
- If necessary fit oil seal track to half shaft splined flange
- Refit spacer.
- Thoroughly clean and de-grease splines of half shaft and bore of hub.
- Using a small brush sparingly apply Loctite "Stud Lock" to outer two thirds of half shaft splines.
- Assemble hub carrier to half shaft
- Fit washer and secure hub carrier assembly with castellated nut.
- Tighten to correct torque.
- Lock using new Split pin.
- Check, and if necessary adjust hub bearing end-float.
- Remove stands and refit the road wheel

REAR HUB OIL SEALS

Remove and refit
The degree of dismantling required to change rear hub Oil seals is extensive, full rear hub overhaul procedure should therefore be carried Out.


REAR HUB WHEEL STUDS
Remove and refit

Removing



- Remove rear hub and carrier assembly
- Support hub carrier and press Out hub using hand press (1) and suitable mandrel.
- Pry old oil seal (2) from hub.
- Draw outer bearing and oil seal track (3) from hub.
- Using a narrow, sharp cold chisel, open peening securing water thrower.
- Remove thrower (4)
- Support hub, and file or grind staking from faulty stud/s (6).



- Unscrew stud/s (1) from hub flange


Refitting
- Screw new stud/s into hub and stake in four places to back of flange (2).
- Fit water thrower to hub and use blunt cold chisel to peen over flange in three or four places (3).
- Press oil seal track and outer bearing race on to hub.
- Press new outer and inner oil seals into hub.
- Fit hub into hub carrier and pack with suitable grease.
- Locate inner bearing over hub and press into position
- Refit rear hub and carrier assembly.


REAR HUB AND CARRIER ASSEMBLY
Overhaul

Service tools: Master spacer JD 15. Dummy shaft JD 14. Press tool JD 16C. Hand press 47. Press tool JD 20A. Tool JD 20A-1. Adaptor JD 16C-1.

Dismantling
- Remove rear hub and carrier assembly.



- Pry Out oil seal retainers (1) from fulcrum shaft housing and remove seals. dummy shaft, bearings, distance tubes and shims (2).
- Mount hub carrier in vice and drift out bearing cups (3) from fulcrum shaft housing.
- Transfer hub camber to press and remove hub assembly from carrier.
- Drift Out inner hub bearing cup, with seal and bearing, from hub carrier.
- Drift out outer bearing cup.
- Fit hand press 47 with adaptors JD 16C-1 to hub and pull outer bearing from hub.
- Remove oil seal track from hub shaft and clean and inspect all parts.

NOTE: When inspecting components. pay particular attention to oil seal tracks; a minute score can considerably shorten oil seal life.

Reassembling



- Replace outer oil seal track (1) on hub shaft.
- Press outer bearing cone (2) into position on hub shaft and grease bearing with 70 cc of Retinax "A"
- Press outer and inner cups of bearings (3) into hub carrier. using tool JD 20A with adaptor JD 20A-1.
- Drift new outer oil seal (4) into position in hub carrier and lower carrier on to hub shaft and outer bearing.
- Place inner bearing (5) into position for fitting.
- Place master spacer JD 15 (6) in position as shown and press bearing on to hub shaft.



- Transfer hub and carrier assembly to vice, set up dial gauge (1) and spacer (2) JD 15 as shown and measure end-float, lifting carrier by using two screwdrivers (3) as levers.
- Select spacer to be fitted on drive shaft.




NOTE: Master spacer has a diameter of length "A" equivalent to a spacer of 3.81 mm (0.15 in). Calculate the spacer required to give end-float of 0.025 to 0.076 mm (0.001 to 0.003 in) Spacers are supplied in thicknesses of 2.77 mm - 3.84 mm (0.109 to 0.151 in) in steps of 0.076 mm (0.003 in) and are lettered A to R (less letters I, N and 0).

For example, assume end-float to be 0.66 mm (0.026 in). Subtract required nominal end-float of 0.050 mm (0.002 in) from measured end-float giving 0.61 mm (0.024 in). Since special collar is 3.81 mm (0.150 in) thick, the thickness of the spacer to be fitted will be 3.8 mm - 0.61 mm. i.e. 3.20 mm (0.126 in). The nearest spacer is 3.23 mm (0.127 in) So letter G spacer should be fitted in place of special collar.

- Remove adaptor and fit new inner bearing seal to hub carrier.
- Fit fulcrum shaft bearing cups to hub carrier and insert one bearing.
- Secure fulcrum shaft vertically in suitably protected jaws of vice and slide bearing in hub carrier over shaft.
- Replace distance tubes and shims as removed in dismantling. adding 0.25 mm (0.010 in) extra shims. (One extra 0.076 mm 10.003 in) shim and one extra 0.178 mm (0.007 in) shim.
- Fit second bearing over fulcrum shaft. remove hub assembly from vice and replace oil seal tracks outside bearings.



- Place a large washer (1) e.g. inner fork thrust washer next to one oil seal track.
- Cover exposed plain length of fulcrum shaft with suitable temporary spacers. (2) fit nuts and tighten to correct torque.
- Apply pressure to fulcrum shaft at large washer end, turning it to settle taper rollers and using feeler gauge (3) measure minimum distance between large washer and hub carrier.
- Apply pressure to opposite end of fulcrum shaft (4) and measure maximum distance between washer and hub carrier.

NOTE: End play of fulcrum shaft in hub carrier is now obtained by subtracting the minimum measurement from the maximum measurement.

This end play must be replaced by a pre-load of 0.05 mm (0.002 in) by removing shims. to a total thickness of 0.05 mm (0.002 in) more than the end play, from between spacer tubes:

For example:
Assume end play found to be 0.25 mm (0.010 in).
Therefore shims to the value of 0.25 + 0.05 mm 0.30 mm (0.010 + 0.002 in 0.012 in) must be removed to give correct pre-load.

- Release nut from large washer end of fulcrum shaft and detach spacers, washer. oil seal track and bearing.
- Remove one spacer tube and extract shims to thickness established to give pre-load.
- Replace spacer tube, pack fulcrum shaft housing with grease and replace bearing and oil seal track.



- Push out fulcrum shaft by inserting dummy shaft (1) and detach temporary spacers from fulcrum shaft.
- Check that oil seal tracks are in position.
- Press new oil seals (2) into fulcrum shaft housings and secure with oil seal retainers.
- Replace rear hub and carrier assembly.