C-81
35 Series 4WD, Model - 3535, 4035, 4535 and 5035 SM June’08
3. RADIATOR
1. The Radiator is the flat tube type with the core
and water tanks combined in one Integral Unit.
It is enclosed within a Grille and fan housing which
are removable for cleaning.
Radiator cap is a pressure cap and is fitted on
the filler neck. The pressure cap has the following
functions
a) Pressures the System thus raising the boiling point
of the Coolant.
b) To prevent the water vaporization of the Coolant.
c) The Cap releases excess pressure via the overflow
tube in the filler neck when the pressure rises
beyond the specified (13 PSI) pressure.
The pressure inside the Radiator is always
maintained within close limits of the Valve
specified on the Cap.
d) The Cap also has a vacuum release valve which
relieves vacuum created when the engine is cools
and coolant temperature drop. The Valve opens
and equalises the System Pressure with
atmosphere via, overflow tube of the filler neck
(see fig 1B).
NOTE: If the Radiator Cap is defective i.e. Rubber Seals
and Valve Springs broken, replace it:
2. Removal
a. Drain the cooling system.
b. Remove the vertical exhaust silencer, precleaner
and raise the hood.
c. Disconnect the battery earth cable before
disconnecting any electrical system.
d. Unclip the main cable harness from the bottom
of the radiator.
e. Disconnect the head lamp and horn cables if fitted.
f. Remove the bolts from the bottom of the
radiator grille and remove the hood and radiator
grille.
g. Open the Radiator and crankcase drain plugs and
allow the system to drain.
h. Disconnect the radiator brace at the radiator
end (5-4).
i. Loosen the clamps (1,2-4) on the radiator also
remove hoses (3,4-4) and work the free of the
inlet and outlet pipes of the radiator.
j. Remove the two nuts from the bolts securing the
radiator to the front axle support and lift the
radiator and rubber pads clear.
k. Remove the fan housing from the radiator.
Fig. 1 - Operation of the Pressure adjusting valve
1. Cap top 3. Rubber pad
2. Overflow tube 4. Filler neck
Fig. 1B - Operation of the vacuum release valve
1. Cap top 3. Rubber pad
2. Overflow tube 4. Filler neck
Cooling System
A. Alternator Mounting
B. Alternator
C. Adjusting Bolt
D. Adjusting Bracket
Fig. 2
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