f you've ever taken your truck in for service
and it has around 30,000 miles on it, chances
are pretty good you've heard this, "Your belt
is dry and cracked. Would you like us to
replace it?" Of course you say, "How much?",
and then you restrain from saying the F-word
when you hear the price.
Well, replacing a serpentine belt on a Discovery
II is extremely easy. It takes about 15-30 minutes.
And no, the fan does not have to be removed.
To replace the serpentine belt, the following
tools are required:
- 15 mm 1/2" socket
- Long
1/2" ratchet
- 10 mm 3/8" socket
- 3/8" ratchet
- Big phillips head screw driver
- 1 bicep (large)
My
Disclaimer:
I am not recommending you use these
instructions to replace the serpentine belt
on your vehicle. My advice
is to take your vehicle to an authorized
dealer and
have the belt installed by a
professional.
The following is simply a documentary of how
I installed my serpentine belt. If you decide
to purchase and install a serpentine belt
and end up damaging your car... it's
your fault...
Take it to an authorized dealer!
That said... if you are a club member, obviously
I'll help you... 
OK. Most of
the DIIs in the United States have 4.0 liter
V8 engines. Well, the 2003s and 2004s have 4.6s,
but the
belt is
the same.
There are two belts: one for vehicles with
ACE (active cornering enhancement) and one for
vehicles
without. "Sherman" does not have ACE,
so I bought the appropriate
belt from Land Rover Houston for him.
To start, I had to remove the fan shroud (2)
in the picture below. I used my phillips head
screw
driver to
remove the four screws. There are two on the
front (circled in orange) and there are two more
to the rear (shown in the second picture). I
gently removed the radiator hose from the top
of the shroud and removed the fan shroud from
the vehicle.
(Click any of the pictures to enlarge them)
Once the fan shroud was removed, I removed the
belt cover (1) in the picture below. The first
bolt you can see circled in the picture, the
second bolt is shown by arrow D. Both of these
bolts are 10 mm.

The pictures below show these same
bolts:
Once I had the fan shroud and belt
cover removed, I removed the tension from the
belt by pulling on the tensioner (C) in the picture
below.

The way I removed the tension was
to place the 15 mm socket and the long ratchet
on the bolt circled in the picture below. Then
I pushed the ratchet in the direction of arrow
A in the picture below. This takes a considerable
amount of "umph." When I pulled the ratchet in direction A, the
pulley rises in direction B, which releases the
tension on the belt.

While holding the ratchet (relieving
the tension), I removed the old belt.
I did have to finagle the belt
off around the fan, but it's doable.
Now, one mistake folks make is
to remove the belt and not remember how to
route it when it is time to place the new belt
back on the vehicle. While funny if it happens
to someone
else, it would
suck
if
it
were to
happen
to
me. So, I always sketch a picture of the belt
on a piece of paper so I will know how to put
it back on.
In this case, I had a diagram,
and I've pasted it below should
anyone need it. The green dashed line shows
how my belt was run because I do not have
ACE; obviously if I did have ACE, I would have
routed the belt per the original diagram.

Once I removed the old belt,
I finagled the new belt on under the fan.
Yes, this can be a pain, but I was patient
and routed the belt up to the tensioner.
Similar
to the way I removed the belt, I pulled on
the tensioner again and slipped the belt
on. Since this belt was new, it took a little
more
"UMPH" than what was required to
remove the old belt; but again, I was patient
and able to get
it back on.
Once the belt was on, I reassembled
the belt cover and fan shroud in the reverse
order of which they were removed.
That's it--one replaced serpentine
belt.
Overall
this is a very simple installation, but it
does take a little strength and patience. If
you have any questions or need any help, let
me
know. - Bill Mallin |