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Refurbish Front Hubs and Swivel Housings

Anyone witha Landrover over about 15 years old will probably have noticed that the front hubs/swivels/brakes can leak endlessly. It's not always that easy to establish exactly what is leaking. It could be your Brake Lluid, Axle Oil, Swivel Pin Housing Oil, you can often mark the progress of the leak by 'wet' marks on the wheels and tyres and can guess where it's coming from.

Although we once had problem tracing a 'leak' that kept appearing overnight and leaving it's mark on the tyre, extensive investigations were carried out until someone noticed that our DOG considered that the Land Rover was part of his territory and 'marked' it every morning! What we thought was a persistant leak was just a persistant cannine leak!

Anyway down to business. Our Project 110 has been leaking from pretty much every orifice since we bought it, engine, gearbox, transfer box, sump, axles, hubs, swivels, etc, etc.

Now it was time to tackle the front Hub Assemblies and Swivel pin Oil seals. Ifyou've got a bit of time its well worth stripping the whole lot down and renewing all the oil seal, gaskets and bearings. Our 110 is now 18 years old so a lot of the parts were well worn.

We also still had Free Wheeling Hubs fitted, from the days when it was a 4cyl selectable 4 wheel drive. These are completely surplus to requirements with a 5 speed box and Tdi conversion. So we took them off and replaced them with standard driving members.

First job is to safely jack up the front of the vehicle and secure with axle stands and chock the rear wheels. When we remove the front wheels to do a job like this we always like to store them under the vehicle near to where we are working. It just gives a little bit of extra security should the jack or axle stands fail - not a lot but it might just be enough to avoid serious injury.

Drain all the oils from the Axle and swivel housings (if there's any in there!)

Using a Ball Joint splitter, remove the steering rods

Remove the brake calipers -

and tie securely out of the way

The Free Wheeling Hubs have a small screw which you need to undo

Inside there is a thin nylon strip which holds it in place. Using a narrow screwdriver you can hook this out -

and the cap will come away

TUsing Circlip pliers, remove the circlip from the end of the half shaft

Loosening the driveing Member bolts can be tricky, we used a bar to hold the hub stationary and to give extra leverage

with all 5 bolts remove the drive member comes away

This exposes the locknuts and lock washer

With a hub spanner, remove the first lock nut, the lock washer and the second lock nut

The hub assembly will now come away

Revealing the stub axle assembly

Undo the 6 bolts holding this in place and remove

Next loosen and remove the swivel housing bolts from the end of the axle

Let the residue of axle oil drain away -

and clean up the surface ready for fitting a new gasket

Strip down the swivel housings and inspest all the bearings, pins, surfaces and oil seals

Refit the pins, with new gaskets, shims and bearings and tighten

Check the swivel load. With the swivel housing, using a spring balance you can check the force required to move the steering arm.

Clean up the surfaces

IMPORTANT: If the bearing pre-load is OK it should take between 3.6kg and 4.5kg of force (36N to 45N) to move the steering arm. the bearing pre-load is adjusted by varying the thickness of the SHIMS on the upper bearing pin. If it takes MORE than 4.5 kg to move the arm then you will need to fit THICKER shims, if it takes LESS than 3.6kg of force you will need THINNER shims. If you can get it to around 4kg wit all the bolts tightened to the correct torque thatwill be just right.

TIP: If you can, see if you can buy a selection of shims on a sale-or-return basis from your parts dealer. There's nothing more frustrating than finding you need a different shim to the ones you've already got - and your vehicle is out of action so you cannot drive to get another one! Similarly with your oil seals and bearings, to buy everything would cost a fortune, but if you find you need it and you haven't got it is very annoying.

Fit a new Oil Seal inside the stub assembly

Fit a new Swivel Oil Seal

We decided to fit new Rubber Giters from BAILCAST (see separate review here)

The gaiters are spilt, allowing you to fit the without stripping dow the hubs and glue them together once in place. But as we already had the hubs off we glued the ends together prior to fitting

While the glue dried, we fitted a new gasket -

then stretched the gaiters over the stub assembly

The Gaiters are very pliable and easily fitted into place

Once in position fit a new swivel seal retaining plate -

and bolt down

Apply the gaiter clamp (supplied) you could use a jubilee clip if preferred

All new parts fitted and new gasket in place

Re-fit Swivel Housing and half shaft. When re-assembling the stub assemblies you must use Nut locking Compound on all bolts

Position the stub assembly over the shaft and secure with 6 bolts.

Cleaning up the hub assembly and inspecting the brake discs

New bearing fitted in place and packed with grease

New bearing fitted to the rear of the hub assembly - again packed with grease

New Oil seal fitted and drifted firmly into place (it's a tight fit)

Hub assembly re-fitted

Lock nuts tightened, lock washer replaced and secured, and the second lock nut refitted and tightened.

At this point you are recommended to check the halfshaft endfloat. using a dial guage.

Bearing in mind that most people will not posess such a device, the following procedure will suffice:

Tighten the locknut with a hub spanner, at the same time spin the hub assembly, keep tightening the locknut until you can feel it getting harder to spin the hub. At this point back it off one quarter of a turn. Don't tighten it so much that it's very hard to turn the hub but you should be able to feel it getting harder as you tighten the nut.

We fitted a new Driving Member and gasket (in place of the Free Wheeling Hubs we removed)

Refit the shims and circlip into the groove on the end of the half shaft and refit hub cap

Refit Brake Calipers and new brake pads if required


THESE ARE THE PARTS WE REPLACED:
(coloured yellow)

KEY Part Number Decription QTY
1 FRC3890
FRC3891
Shaft & CV Joint Assembly Right
Shaft & CV Joint Assembly Left
1
1
2 AEU2522
AEU2520
+CV Joint
+ Shaft Right
2
1
3 AEU2521 + Shaft Left 1
4 FRC2644 Bearing Housing 2
5 571718 Oil Seal 2
6 FRC2349 Joint Washer 2
7 AFU1030
FRC8530
Bolt (housing to Axle Case)
Washer
14
14
8 FRC2889 Oil Seal 2
9 FRC4206 Joint Washer 2
10 FRC4142 Retaining Plate 2
11 SH106121 Bolt (Plate to housing) 14
12 WL106001 Spring Washer 14
13 WA106001L Plain Washer 14
14 AFU1234 Lock Stop Bolt 2
15 NT112041 LockNut 2


KEY Part Number Decription QTY
1
FRC4838
FRC4839
FRC4840
FRC4841
Swivel Pin Housing
Right - Right Hand Drive
Left - Right Hand Drive
Right - Left Hand Drive
Left - Left Hand Drive

1
1
1
1
2 3291 Filler Plug 2
3 3290 Drain Plug 2
4 FRC2916 Housing and Bush 2
5 FRC2906 Thrust Washer 2
6 FRC3511 Swivel Pin Upper 2
7 FRC2883
FRC2884
FRC2885
FRC2886
Shim 0.075mm
Shim 0.130mm
Shim0.250mm
Shim 0.750mm
2
2
2
2
8 BX110071L Bolt 4
9 WL110001 Spring Washer 4
10 FRC2894 Swivel Pin Lower 2
11 FRC2897 Joint Washer 2
12 606666 Bearing 2
13 BH108061L Bolt 4
14 WL108001L Spring Washer 4
15 FRC3725 Retaining Bracket 2


KEY Part Number Decription QTY
1 FRC4320 Stub Axle Assembly 2
2 FRC3099 Oil Seal 2
3 FRC4319 Bush 2
4 FRC3205 Joint Washer 2
5 FRC2310 Mudshield 2
6 SX110251 Bolt (Stub Axle to Swivel Housing) 12
7 WL110001L Spring Washer 12
8 RTC3511
FRC8211
Oil Seal (see note 1)
Oil Seal (see note 2)
2
2
9 RTC3429 Bearing inner and outer 4
10 FRC6139 Hub and Stud assembly 2
11 FRC6137 Stud 10
12 217352 Key Washer 2
13 90217355
FRC8700
Lock Nut (see note 1)
Lock Nut (see note 2)
4
4
14 217353 Locker 2
15 FRC3988 Joint Washer 2
16 FRC5806 Hub Driving Member 2
17 AFU1181 Bolt 10
18 WL110001L Spring Washer 10
19 FRC6782
FRC6783
FRC6784
FRC6785
FRC6786
FRC6787
FRC6788
FRC6789
FRC6790
Shim 0.45mm
Shim 0.60mm
Shim 0.75mm
Shim 0.90mm
Shim 1.05mm
Shim 1.20mm
Shim 1.35mm
Shim 1.50mm
Shim 1.65mm
4
4
4
4
4
4
4
4
4
20 549473 Circlip 2
21 FRC4377 Hub Cap 2
NOTE 1 Axle # 20L13348b (right) 21L10631B (left)
NOTE 2 Axle # 20L13359B (right) 21L10632B (left)


Other Jobs: PROJECT 110 INDEX

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