Table of Contents
Advertisement
5.2a Radiator top hose
2 Cooling system - draining
See Chapter 1, Section 46.
3 Cooling system - flushing
See Chapter 1, Section 46.
4 Cooling system - filling
See Chapter 1, Section 46.
5 Radiator - removal and refitting
1 Drain the radiator. There is no need to drain
the cylinder block. On DOHC engines the
electric cooling fan assembly must be removed
to gain the clearance to remove the radiator.
2 Disconnect the top and bottom hoses from
the radiator by slackening the hose clips and
pulling off the hoses with a twisting motion
(see illustrations). Do not use excessive force
- the radiator side tanks are made of plastic.
3 On OHC models, disconnect the small hose
running from the expansion tank to the radiator.
4 On automatic transmission models, clean
around the transmission fluid cooler unions on
the radiator and disconnect them (see
5.6 Fan shroud clip
5.2b Radiator bottom hose (A)
Also shown are automatic transmission fluid
cooler lower union (B) and hose to expansion
tank (C)
illustration). Be prepared for fluid spillage;
plug or cap the cooler lines to keep dirt out.
5 On models with air conditioning, disconnect
the auxiliary fan thermo-switch. If the thermo-
switch is mounted in the radiator, remove It.
6 Remove the upper half of the fan shroud by
removing the two bolts and two clips (see
illustration), and the lower half which is
secured by two bolts.
7 Release the two radiator top mounting clips
by pulling out the plastic plugs (see illustration).
8 Raise and support the front of the vehicle.
Support the radiator and remove the two
bottom mounting bolts (see illustration).
9 Carefully lower the radiator slightly to free
the top mountings, then remove it from under
the vehicle.
10 If a new radiator is being fitted, transfer the
fan shrouds and mountings from the old one.
11 Refit by reversing the removal operations,
then refill the cooling system.
12 On automatic transmission models, check
the transmission fluid level.
6 Radiator - inspection and repair
1 If the radiator has been removed because of
suspected blockage, reverse-flush it.
2 Clean dirt and debris from the radiator fins,
using an air jet, or water and a soft brush. Be
careful not to damage the fins, or cut your
fingers.
5.7 Pull out the plug to release the radiator
top mounting
Cooling, heating and ventilation systems 3•3
5.4 Transmission fluid cooler upper union
3 A radiator specialist can perform a "flow
test" on the radiator to establish whether an
internal blockage exists.
4 A leaking radiator must be referred to a
specialist for permanent repair. Do not attempt
to weld or solder a leaking radiator, as
damage to the plastic parts may result.
5 In an emergency, minor leaks from the
radiator can be cured by using a radiator
sealant while the radiator is in situ.
7 Thermostat - removal and
refitting
SOHC engines
1 Disconnect the battery negative lead.
2 Drain the cooling system. As it is not
necessary to completely drain the radiator, the
bottom hose can be disconnected from the
water pump.
3 Disconnect
thermostat housing at the front of the cylinder
head (see illustration).
4 Unscrew the bolts and remove the housing
and gasket (see illustration).
5 Using a screwdriver, prise the retaining clip
from the housing, and extract the thermostat
and sealing ring (see illustrations).
6 Clean the thermostat housing and cylinder
head mating surfaces. Obtain a new gasket for
reassembly, and if necessary a new sealing
ring too.
7 Refit by reversing the removal operations.
5.8 One of the radiator bottom mounting
bolts (arrowed)
the
top
hose
from
the
3
Advertisement
Table of Contents
