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| Reassembly of the
front suspension begins with the lower wishbone pivot being bolted to the
chassis. Remember to make sure that the wishbone ends are clean and free
of rust and any rough areas. |
Next step was to
install the wishbone arm bushes. As you can see I have opted for Polybush
polyurethane bushes rather than the rubber/steel MGB V8 option. I will let
you know how they work out |
Next step is to fit the arms. Remember that if you are
fitting an anti roll bar , as I am, that the front arm is a special with
one enlarged spring pan bolt hole and has extra reinforcement. Only
loosely tighten the retaining nuts at this stage. |
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Here the spring pan is in and bolted up but not to
final torques. Note the anti roll bar drop rod is fitted. |
I choose to replace my king pins as the originals were
badly corroded in the bottom threaded areas. I got an experienced work
shop to press out the old and in with the new. This needs to be done
correctly for obvious reasons. They also crack tested the steering knuckle
for me afterwards. The trunions have a bushing that, if renewed, needs to
be reamed to an exact size. Barney Gaylord's website mgaguru.com has
an excellent set of pictures on how to do this. |
Here the top and bottom trunions are going on. The tube
shown, when pushed in allows the trunion to only rotate a limited number
of times. It also carries the main pivot bolt at the top and bottom. Not
the rubber gaiters. These can be tricky to install and have a surprising
amount of grip on the kingpin and need silicone lubrication to get them to
slip as the kingpin rotates. |
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Here
is a king pin ready to be fitted. Remember the kingpin threads are left
handed for the left side of the car and right handed for the right side of
the car. (left and right side is when you have the engine in front of you
and the boot (trunk) behind you. |
Above
are the fulcrum bolt components. Rather than attempt to explain the
sequence of installation its better to refer to the work shop manual |
Here
the shock absorber is bolted on and the kingpin assemblies bolt threaded
through the top shock absorber arms. |
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Here
the spring is in. Remember to grease the spring top and bottom. There are
a number of ways of compressing the spring to the point where you can get
the bottom kingpin fulcrum bolt in. As I had no engine in I opted to
use two coil spring compressors with the top hooks over a pry bar behind
the bump stop and the bottom hooks under the bottom spring pan. |
By winding up equally on the coil spring compressors both
sides up came the bottom pan until I could get the lower trunion in
between the lower arms. Note the for safety I still tied off the coil
spring just in case something broke. This way the spring would be held and
prevented from bouncing round the garage. |
Here
is the finished set up with bottom fulcrum bolt in and the spring
compressors removed. Again you can see the new anti roll bar drop rod and
the reinforced lower suspension arm. |
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Here I have pushed on the new front hub assembly complete
with new disc. I have not detailed out the process of fitting new oil seal
or bearings as it is a very straight forward process. At this stage the
hub nut is loosely tightened. |
Here
is how the front now looks with wire wheels. The suspension components are
only finally tightened when the car has everything reinstalled
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| Having counted the
number of splines on the old disc wheel axles 7 times I found that my MGA
was one of the batch that was assemble using 26 splined axles. As I am
fitting wires and you can only get the new rear hub/axles assemblies as 25
splined I has to change out the sun wheels in my differential. Step one
was to get the diff assembly off the back axle |
You can work with
the assembly still in the carrier with just one bearing cap off but I
decided to take it out completely. First drill out the area where the
small retaining pin is peened over and then drive it out from the other
side as shown. The pin can only go in and out from one side. |
Next step is to
drive out the large sun wheel pin. The small retaining pin is the only
thing that holds this in place. |
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The
four sun wheels and thrust bearings can then be 'walked out' of the
assembly. Its a fiddly job but relatively easy |
The
first two with the 25 spline teeth go in first . Replace the thrust
bearings at the same time. Again Barney Gaylord has an excellent section
on the procedure that gives a lot more detail than I am showing |
Here
I am attempting to illustrate how to easily get in the two 'floating' sun
wheels. I found it easier to place both on opposite sides in the open
areas of the cage and then rotate them both on the other two 'splined'
wheels until the move inside the cage where the big pin will fix them in
place. The small pin is replaced and the open larger end peened over to
prevent the pin from coming out. |
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Next
job was to remove the rear hubs
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First
bend down the lock washer tab and use the special large socket to undo the
nut. Remember we have left and right hand threads here as well. The nut is
stamped LH or RH so no excuses. Mine took a breaker bar and an extension
tube to release which is good. |
Here
is the puller set up I used to ease them off. They were tight but not in
any way frozen in place. |
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Here
is the hub off revealing perfect bearing unscored bearing surfaces. |
Next
off came the brake back plate for cleaning and painting. |
Out
with the old bearing and oil seal and in with the new |
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Here
is the old rear inner hub with new shorter wheel studs, necessary for the
wire wheel conversion outer hub. The other device is a bearing driver that
has been invaluable for get bearing and oil seals in and out |
Here
is the restored back plate / hub reinstalled. Remember to put the brake
back plate on before the hub! |
I've
jumped ahead a bit but I wanted to illustrate the sort of serious leverage
needed on that nut to tighten it up. |
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| Here we
have the refurbished front disc brake calliper installed. Note the
location of the brake pipe and the special bracket the prevents the brake
pipe from turning. Not advisable as loosening could cause your brakes to
leak fluid and loose pressure. |
Here I am showing the routing of the new copper brake
lines around the engine bay. |
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Here I am showing the routing of the new copper brake
lines around the rear axle area. |
Here I am showing the routing of the new copper brake
lines around the rear axle area. Note how the handbrake cable (thick black
line) is spaced down lower than the copper brake pipe. |
Note how the copper brake line from front to back dog legs
inboard of the rear front spring mounting point. This avoids the danger of
people jacking the car up on the brake line and crushing it. |
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| Again
these are general views to show how the copper brake pipes and hand brake
cable run |
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