Agora Models MERSEDES-BENZ 300SL GULLWING 1955 Pack 03 Manual

STAGE 11: THE ENGINE FAN
STAGE 12: OIL LINES AND HIGHPRESSURE OIL LINE
STAGE 13: THE GEARBOX AND CLUTCH HOUSINGS
STAGE 14: FITTING THE ENGINE TO THE CHASSIS
Pack 03
BUILD INSTRUCTIONS
"MERCEDES-BENZ" and are the intellectual property of Mercedes-Benz Group AG.
They are used by Agora Models under license.

Spare screws are included with each part. Occasionally, you may be instructed to keep spare or
unused screws for a later stage. Keep these spares in a safe place and label them correctly.
Please make sure you don’t mix up the screws. They look quite similar, but the threads do vary slightly.
Using the wrong screws may damage the parts.
When securing parts together using multiple screws, fit each screw loosely to ensure all the parts are
correctly aligned before gently tightening them firmly, but not overtight, in the order in which you
placed them.
The screwdriver can be magnetized by stroking it with a magnet (fridge magnet, etc.) enabling it to
hold the screws and make assembly easier.
If a screw is tight going into a metal part, do not force it as you may shear the head off. Remove it and
put a tiny smear of Vaseline, soap or light oil on the thread. That will lubricate it and make it easier to
drive home.
During the course of this build, you will receive many pieces that you will assemble immediately –
following the instructions in the corresponding stage – and other pieces that you should store safely
to one side, for use in future assembly stages.
Left and Right! When building your Mercedes-Benz 300SL, the left or right hand side refers to each
side as you are sitting in the car.
!
WARNING: Some parts are assembled using magnets. These magnets can cause serious injury if they
are swallowed. Keep away from children. If you suspect a magnet has been swallowed, seek medical
help straight away.
Advice from the experts

3
In this stage, you will put together the engine fan
assembly with its fan belt and pulleys, then fit
them onto the Mercedes 300 SL engine block.
11A 11B
11C
11D
11E
11F
11G
Code Name Quantity Material
11A Fan drive shaft 1 ABS
11B Fan blades 1 ABS
11C Pulley (fan) 1 ABS
11D Fan support backplate 1 ABS
11E Crankshaft damper
pulley 1 ABS
11F Pulley (crankshaft) 1 ABS
11G Fan belt 1 PVC
CM Screws 2 x 4mm 2 + 1* Iron
The crankshaft damper pulley 11E is fitted
onto the crankshaft with its widest side facing
the engine 06A . Then the smaller crankshaft
pulley 11F is inserted onto the shaft, with
the narrowest side facing the damper 11E ,
forming a channel. Both pins on the pulley
must be inserted into the holes in the
crankshaft damper. Join these parts together
with a CM screw.
FITTING THE CRANKSHAFT DAMPER AND THE PULLEY
01
CM
Fig. 1
06A Crankcase
11E Crankshaft
damper pulley
11E Crankshaft
damper pulley
11F Crankshaft pulley
Pin
Pin
COLOR CODING
The color coding of the parts shows how
they should be put together.
RED indicates the
screws and the
correct position.
YELLOWYELLOW indicates
new parts.
GRAY-BLUE indicates
the modules on which
the new parts should
be assembled.
nSTAGE 11: THE ENGINE FAN
STAGE 11 – REQUIRED PARTS
* Replacement screws included

4
Be very careful when
inserting the pulley
onto the engine, to
avoid damaging any
of the parts that are
already assembled.
FITTING THE FAN SUPPORT BACKPLATE
02
The fan support backplate 11D is inserted onto the shaft at the front end of the engine block 04A so
that the protrusion on the back slides into its corresponding recess on the engine block. Then the fan
pulley 11C and the fan drive shaft 11A are fitted as shown in figure 1. Both parts are pushed all the way onto
the shaft on the front end of the engine block. This assembly is fixed in place with a CM screw inserted into
the end of the fan drive shaft.
FITTING THE FAN BELT
03 FITTING THE FAN BLADES 04
The fan belt 11G is tensioned around the fan
pulley 11C , the crankshaft damper pulley 11F , and the
alternator pulley 10D , as shown in the picture.
The shaft of the fan blades 11B is inserted all the way into the
central hole of the fan drive shaft 11A .
11G Fan
belt
11F Crankshaft
damper pulley 11B Fan blades
11A Fan drive shaft
11D Fan support
backplate
11C Pulley (fan)
11C Pulley (fan)
10D Pulley (alternator)
Fig. 2
CM
11A Fan drive shaft
11C Pulley (fan)
Fig. 1
11D Fan support
backplate
04A Left engine
block
Protrusion

5
nSTAGE 12: OIL LINES AND HIGH-PRESSURE OIL LINE
In this stage, we explain how to install the three oil
lines and the high-pressure line.
12A 12B 12C
12D
Code Name Quantity Material
12A High-pressure oil line 1 ABS
12B Oil line 1 1ABS
12C Oil line 2 1ABS
12D Oil line 3 1ABS
–Phillips screwdriver 1 –
The pin on the straight end of oil line 1 12B
is inserted into the hole in the lower back
end of the left side of the crankcase 06A , as
shown. The pin on the angled end of the oil
line 12B is pressed into the hole in the lower
front end of the left side of the engine 04A ,
as shown.
INSTALLING THE FIRST OIL LINE
01
06A Crankcase
12B Oil line 1
04A Left engine block
Phillips screwdriver
STAGE 12 – REQUIRED PARTS
* Replacement screws included

6
INSTALLING THE THIRD OIL LINE
INSTALLING THE HIGHPRESSURE LINE
Be very careful
when inserting the
oil lines, to avoid
damaging any of
the parts that are
already assembled.
03
04
12D Oil line 3
The pin on the thicker end of
oil line 3 12D is also inserted into
a hole at the bottom of the left
side of the engine block 04A .
It is located just below the hole
used in the previous step. The
other end of oil line 3 12D is
inserted into the lower front of
the middle of the crankcase 06A .
The hole is slightly below the
wide end of oil line 2.
The pin on the bigger end of the
high-pressure oil line 12A is pressed
into the hole on the underside of the air
intake manifold 08D . Next, the other
end of the high-pressure tube 12A is
inserted into the hole in the rear end of
the right engine block 10A .
10A Right engine block
08D Intake
manifold
12A High-pressure oil line
06A Crankcase
04A Left engine block
INSTALLING THE SECOND OIL LINE
02
06A Crankcase
04A Left engine block
The thicker end of oil line 2 12C
is inserted in the upper hole at the
bottom of the crankcase 06A . The
other end of oil line 2 12C is pressed
into the hole in the the left engine
block 04A , as shown.
12C Oil line 2

7
nSTAGE 13: THE GEARBOX AND CLUTCH HOUSINGS
In this stage, you will assemble the gearbox and
clutch housings. Later, both parts will be fixed to
the rear end of the engine.
13A 13B
13C 13D
13E 13F
Code Name Quantity Material
13A Gearbox housing (left) 1 Zinc
13B Gearbox housing (right) 1 Zinc
13C Gearshift housing cover
(front) 1 Zinc
13D Front drive shaft support 1 Zinc
13E Clutch housing 1 Zinc
13F Gearshift housing cover
(rear) 1 Zinc
MM Screws 2.3 x 4mm 5 + 2* Iron
SM Screws 2 x 3 x 6.5mm 3 + 1* Iron
The front drive shaft
support 13D is positioned
on the rear gearshift
housing cover 13F , as
shown in the picture. Fix it
in place with an SM screw.
Semi-tighten an SM screw just one or two turns into
the internal hole of the gearshift housing cover 13C . Do
the same in the internal hole of the gearshift housing
cover 13F . Housing cover 13F and housing cover 13C are
positioned together with the right gearbox housing 13B , as
shown in the picture, so that the necks of both screws rest
inside 13B (see figure 1). Gently tighten both screws.
THE FRONT DRIVESHAFT SUPPORT
THE RIGHT GEARSHIFT HOUSING COVER
01
02
13D Front drive shaft support
13F Gearshift housing cover (rear)
13C Gearshift
housing cover (front)
13F Gearshift housing
cover (rear)
SM
SM
SM
Fig. 1
13B Gearbox housing (right)
STAGE 13 – REQUIRED PARTS
* Replacement screws included

8
06A Crankcase
ASSEMBLING THE GEARBOX HOUSING
COMPLETING THE ASSEMBLY OF THE GEARBOX HOUSING
ASSEMBLING THE CLUTCH HOUSING
The self-tapping
screws create their
own thread when
they are screwed
in. For a perfect
thread, first screw
in halfway and then
remove the screw.
Remove all the
shavings and then
insert and tighten
the screw all the
way in, holding the
screwdriver tightly
and applying firm
pressure.
03
04
05
13C Gearshift housing
cover (front)
Place the left side of the gearbox housing 13A on
the right side 13B , as shown in the picture. Make sure
the holes of both parts match exactly, and that they
stay in place when assembled. Tighten both sides of the
housing with two MM screws.
At the front end of the right-side
housing of the gearbox 13B there
is a flat bracket with a hole. It must
be inserted in the opening at the
rear end of the crankcase 06A as
shown in the figure so that the hole
coincides exactly with the one in
the opening. The gearshift housing
cover 13C is fixed to the crankcase
with an MM screw.
The clutch housing 13E is positioned
as shown, between the gear shift housing
and the crankcase 06A . Fix the part in
place with two MM screws.
MM
MM
MM
MM
13A Gearbox housing (left)
13B Gearbox housing (right)
13B Gearbox housing (right)
06A Crankcase
13E Clutch housing
MM

9
nSTAGE 14: FITTING THE ENGINE TO THE CHASSIS
In this stage, you will fix the engine onto
the tubular chassis of the 300 SL.
14A
Code Name Quantity Material
14A Main chassis 1Zinc
QM Screws 2.6 x 5mm 2 + 1* Iron
STAGE 14 – REQUIRED PARTS
* Replacement screws included
14A Main chassis

10
This installment explains how to assemble the complete engine group from stage 13 with the front part
of the main chassis 14A . First, the motor is placed on the chassis as shown in the picture. Hold both pieces
in this position and turn the assembly upside down. Next, one QM screw is inserted in the rear hole of the
crankcase 06A and another in the hole in the rear end of the gearshift housing cover 13F (see figure 1).
FITTING THE ENGINE TO THE TUBULAR CHASSIS
Fig. 1
06A Crankcase
14A Main chassis
14A Main chassis
QM
QM
To avoid scratches,
it is recommended
that you place
the chassis on
a soft cloth
before starting.
Be very careful
when turning the
assembly over, to
avoid damaging
any of the parts.
01
13F Gearshift housing cover (rear)