GENERAL INFORMATION
03-4
Materials –
lkeep lids on containers of solvents;
lonly use the minimum quantity;
lconsider alternative materials;
lminimise over-spray when painting.
Gases –
luse the correct equipment for collecting
refrigerants;
ldon't burn rubbish on site.
Discharges to water
Most sites will have two systems for discharging
water: storm drains and foul drains. Storm drains
should only receive clean water, foul drains will take
dirty water.
The foul drain will accept many of the normal waste
waters such as washing water, detergents and
domestic type wastes, but oil, petrol, solvent, acids,
hydraulic oil, antifreeze and other such substances
should never be poured down the drain. If in any
doubt, speak to the local Water Company first.
Every precaution must be taken to prevent spillage of
oil, fuel, solvents etc. reaching the drains. All
handling of such materials must take place well away
from the drains and preferably in an area with a kerb
or wall around it, to prevent discharge into the drain.
If a spillage occurs, it should be soaked up
immediately. Having a spill kit available will make this
easier.
Additional precautions
Check whether the surface water drains are
connected to an oil/water separator, this could
reduce the pollution if an incident was to occur. Oil/
water separators require regular maintenance to
ensure effectiveness.
Checklist
Always adhere to the following:
Disposal –
lnever pour anything down a drain without first
checking that it is environmentally safe to do so,
and that it does not contravene any local
regulations or bye-laws;
lhave oil traps emptied regularly.
Spillage prevention –
lstore liquids in a walled area;
lmake sure the taps on liquid containers are
secure and cannot be accidentally turned on;
lprotect bulk storage tanks from vandalism by
locking the valves;
ltransfer liquids from one container to another in
an area away from open drains;
lensure lids are replaced securely on containers;
lhave spill kits available near to points of storage
and handling of liquids.Spill kits
Special materials are available to absorb a number of
different substances. They can be in granular form,
ready to use and bought in convenient containers for
storage. Disposal of used spill-absorbing material is
dealt with in the 'Waste Management' section.
Land contamination
Oils, fuels and solvents etc. can contaminate any soil
that they are allowed to contact. Such materials
should never be disposed of by pouring onto soil and
every precaution must be taken to prevent spillage
reaching soil. Waste materials stored on open
ground could also leak, or have polluting substances
washed off them that would contaminate the land.
Always store these materials in suitable skips or
other similarly robust containers.
Checklist
Always adhere to the following:
ldon't pour or spill anything onto the soil or bare
ground;
ldon't store waste materials on bare ground, see
'Spillage prevention' list.
Legal compliance
Some sites may have a discharge consent for
effluent discharge to the foul drain for a car wash etc.
It is important to know what materials are allowed in
the drain and to check the results of any monitoring
carried out by the Water Company.
Where paint spraying operations are carried out it
may be necessary to apply to the Local Authority for
an air emissions licence to operate the plant. If such
a licence is in operation, additional precautions will
be necessary to comply with the requirements, and
the results of any air quality monitoring must be
checked regularly.
Checklist
Always adhere to the following:
lknow what legal consents and licences apply to
the operations;
lcheck that the emissions and discharges
comply with legal requirements.
GENERAL INFORMATION
03-6
Waste Management
One of the major ways that pollution can be reduced
is by the careful handling, storage and disposal of all
waste materials that occur on sites. Legislation
makes it illegal to dispose of waste materials other
than to licensed waste carriers and disposal sites.
This means that it is necessary to not only know what
the waste materials are, but also to have the
necessary documentation and licenses.
Handling and storage of waste
Ensure that waste materials are not poured down the
drain or onto soils. They should be stored in such a
way as to prevent the escape of material to land,
water or air.
They must also be segregated into different types of
waste e.g. oil, metals, batteries, used vehicle
components. This will prevent any reaction between
different materials and assist in disposal.
Disposal of waste
Disposal of waste materials must only be to waste
carriers who are licensed to carry those particular
waste materials and all the necessary
documentation must be completed. The waste
carrier is responsible for ensuring that the waste is
taken to the correct disposal sites.Dispose of waste in accordance with the following
guidelines:
lFuel, hydraulic fluid, anti-freeze and oil –
keep separate and dispose of to specialist
contractor.
lRefrigerant – collect using specialist
equipment and containers, and reuse.
lDetergents – safe to pour down the foul drain
if diluted.
lPaint, thinners – keep separate and dispose of
to specialist contractor.
lComponents – send back to supplier for
refurbishment, or disassemble and reuse any
suitable parts. Dispose of the remainder in
ordinary waste.
lSmall parts – reuse any suitable parts, dispose
of the remainder in ordinary waste.
lMetals – can be sold if kept separate from
general waste.
lTyres – keep separate and dispose of to
specialist contractor.
lPackaging – compact as much as possible and
dispose of in ordinary waste.
lAsbestos-containing – keep separate and
dispose of to specialist contractor.
lOily and fuel wastes (e.g. rags, used spill kit
material) – keep separate and dispose of to
specialist contractor.
lAir filters – keep separate and dispose of to
specialist contractor.
lRubber/plastics – dispose of in ordinary
waste.
lHoses – dispose of in ordinary waste.
lBatteries – keep separate and dispose of to
specialist contractor.
lAirbags (explosives) – keep separate and
dispose of to specialist contractor.
lElectrical components – send back to
supplier for refurbishment, or disassemble and
reuse any suitable parts. Dispose of the
remainder in ordinary waste.
lElectronic components – send back to
supplier for refurbishment, or disassemble and
reuse any suitable parts. Dispose of the
remainder in ordinary waste.
lCatalysts – can be sold if kept separate from
general waste.
lUsed spill-absorbing material – keep
separate and dispose of to specialist contractor.
lOffice waste – recycle paper and toner/ink
cartridges, dispose of the remainder in ordinary
waste.
GENERAL INFORMATION
03-14
Self-locking nuts
Self-locking nuts, i.e. nylon insert or deferred thread
nuts can be re-used providing resistance can be felt
when the locking portion of the nut passes over the
thread of the bolt or stud.
DO NOT apply heat in an attempt to free deferred
thread nuts or fittings; as well as causing damage to
protective coatings, there is a risk of damage to
electronic equipment and brake linings from stray
heat.
Where self-locking nuts have been removed, it is
advisable to replace them with new ones of the same
type.
Where bearing pre-load is involved, nuts should be
tightened in accordance with special instructions.
Flexible pipes and hoses
General
When removing and installing flexible hydraulic pipes
and hoses, ensure that the following practices are
observed to ensure component serviceability:
lBefore removing any brake or power steering
hose, clean end fittings and area surrounding
them as thoroughly as possible.
lObtain appropriate plugs or caps before
detaching hose end fittings, so that the ports
can be immediately covered to prevent the
ingress of dirt.
lClean hose externally and blow through with
airline. Examine carefully for cracks, separation
of plies, security of end fittings and external
damage. Reject any faulty hoses.
lWhen refitting a hose, ensure that no
unnecessary bends are introduced, and that
hose is not twisted before or during tightening of
union nuts.
lFit a cap to seal a hydraulic union and a plug to
its socket after removal to prevent ingress of
dirt.
lAbsolute cleanliness must be observed with
hydraulic components at all times.
lAfter any work on hydraulic systems, carefully
inspect for leaks underneath the vehicle while a
second operator applies maximum brake
pressure to the brakes (engine running) and
operates the steering.
Do not disconnect any pipes in an air
conditioning refrigeration system unless trained
and instructed to do so. A refrigerant is used
which can cause blindness if allowed to contact
eyes.
GENERAL INFORMATION
03-29
Air conditioning system precautions
General
The air conditioning system contains fluids and
components which could be potentially hazardous to
the service engineer or the environment if not
serviced and handled correctly. The following
guidelines are intended to alert the service engineer
to potential sources of danger and emphasise the
importance of ensuring the integrity of the Air
Conditioning operating conditions and components
fitted to the vehicle.
Where necessary, additional specific precautions are
detailed in the relevant sections of this Manual which
should be referred to prior to commencing repair
operations.
The refrigerant used in the air conditioning system is
HFC-134a (Hydrofluorocarbon) R134a. Always
adhere to the following precautions:
WARNING: Servicing must only be carried out by
personnel familiar with both the vehicle system
and the charging and testing equipment. All
operations must be carried out in a well
ventilated area away from open flame and heat
sources.
WARNING: Do not allow a refrigerant container to
be heated by direct flame or to be placed near
any heating appliance. A refrigerant container
must not be heated above 50
°C.
Do not leave a container of refrigerant without its
cap fitted. Do not transport a container of
refrigerant that is unrestrained, especially in the
boot of a car.
WARNING: Do not smoke or weld in areas where
R134a is in use. Inhalation of concentrations of
vapour can cause dizziness, disorientation,
incoordination, narcosis, nausea or vomiting.
R134a is odourless and colourless. Do not
handle or discharge in an enclosed area, or any
area where the vapour and liquid can come in
contact with a naked flame or hot metal. R134a is
not flammable but can cause a highly toxic gas.
WARNING: Do not allow fluids other than R134a
or compressor lubricant to enter the air
conditioning system. Spontaneous combustion
may occur.WARNING: R134a is a hazardous liquid and when
handled incorrectly can cause serious injury.
Suitable protective clothing, consisting of face
protection, heat proof gloves, rubber boots and
rubber apron or waterproof overalls, must be
worn when carrying out operations on the air
conditioning system.
WARNING: Due to its low evaporating
temperature, R134a must be handled with care.
R134a splashed on any part of the body will
cause immediate freezing of that area. Also,
refrigerant cylinders and replenishment trolleys
when discharging will freeze skin to them if
contact is made.
WARNING: Under no circumstances should
refrigerant hoses be disconnected without first
discharging the system.
Do not disconnect any pipes in an air
conditioning refrigeration system unless trained
and instructed to do so. A refrigerant is used
which can cause blindness if allowed to contact
eyes.
WARNING: Refrigerant must always be recycled
before re-use to ensure that the purity of the
refrigerant is high enough for safe use in the air
conditioning system.
Recycling should always be carried out with
equipment which is design certified by
Underwriter Laboratory Inc. for compliance with
SAE J1991. Other equipment may not recycle
refrigerant to the required level of purity.
A R134a Refrigerant Recovery Recycling
Recharging Station must not be used with any
other type of refrigerant.
Refrigerant R134a from domestic and
commercial sources must not be used in motor
vehicle air conditioning systems.
GENERAL INFORMATION
03-31
When a major repair has been completed, a leak test
should be conducted; refer to the air conditioning
section of this manual for the correct procedure.
Refrigerant oil
Use an approved refrigerant lubricating oil:
ND Oil 8
CAUTION: Do not use any other type of
refrigerant oil.
CAUTION: Refrigerant oil easily absorbs water
and must not be stored for long periods. Do not
pour unused oil back into the container.
When renewing system components, add the
quantities of refrigerant oil recommended in the Air
Conditioning section of this manual.
Compressor
A new compressor is sealed and pressurised with
Nitrogen gas. When fitting a new compressor, slowly
release the sealing cap; gas pressure should be
heard to vent as the seal is broken.
CAUTION: A new compressor should always be
sealed and could be pressurised with nitrogen
gas. To avoid possible oil loss, release the
sealing cap(s) slowly. Do not remove the cap(s)
until immediately prior to connecting the air
conditioning pipes to the compressor.
Rapid refrigerant discharge
If the air conditioning system is involved in accident
damage and the system is punctured, the refrigerant
will discharge rapidly. The rapid discharge of
refrigerant will also result in the loss of most of the
oil from the system. The compressor must be
removed and all the remaining oil in the compressor
drained and refilled in accordance with the 'Air
Conditioning Compressor Replacement Procedure'.
Air conditioning compressor
replacement
A new compressor is supplied filled with a full charge
of (X cm3) of refrigerant oil.
A new compressor is supplied with an oil fill (X cm) of
120 cm
3.
A calculated quantity of oil must be drained from the
new compressor before fitting. To calculate the
quantity of oil to be drained:
1Remove the drain plug from the old
compressor.
2Invert the compressor and gravity drain the oil
into a calibrated measuring cylinder. Rotate the
compressor clutch to ensure the compressor is
completely drained.
3Note the quantity of oil drained (Y cm
3).
4Calculate the quantity of oil to be drained from
the new compressor using the following
formula:
X cm
3 – (Y cm3 + 20 cm3) = Q cm3
5Remove the drain plug from the new
compressor and drain Q cm3 of oil.
6Fit and tighten the compressor drain plug.
System components
When renewing system components, add the
following quantities of refrigerant oil:
lCondenser = 40 cm
3
lEvaporator = 30 cm 3
lReceiver drier = 15 cm 3
lPipe or hose = 5 cm 3
GENERAL DATA
04-33
Heating and Ventilation
Air Conditioning
PTC heater - Td4 engine - if fitted
⇒ Make/Type Catem, 900 Watt output, 12 volt supply, located in Hevac unit
FBH - Td4 engine - if fitted
⇒ Make/Type Webasto Thermotop C, self-regulating, 5 kW output
System CFC free, sealed, closed-loop system
Refrigerant HFC - R134a
Refrigerant charge quantity:
All models except LHD KV6
LHD KV6 models540 ± 25 grammes
430 ± 25 grammes
Compressor, up to 04MY (some very early 04MY
vehicles may be fitted with this type of compressor):
⇒ Type Denso - variable displacement, 7-cylinder swash plate unit
⇒ High Pressure Blow-off valve 35.3 bar (3.53 MPa, 512 lbf/in
2)
⇒ Displacement (Min.) 5%
⇒ Displacement (Max.) 95%
Compressor, 04MY onwards
⇒ Type Sanden PXV16 - variable displacement, 7-cylinder swash plate unit
⇒ High Pressure Blow-off valve 35.3 bar (3.53 MPa, 512 lbf/in
2)
⇒ Displacement (Min.) 3%
⇒ Displacement (Max.) 100%
Lubricating oil Nippon Denso ND-8
Evaporator thermostat:
⇒ Opens
⇒ Closes+2 °C (+36 °F)
-4 °C (+25 °F)
Condenser fan control PWM signal from ECM to cooling fan control unit
Refrigerant Pressure Sensor
Low pressure limit:
⇒ A/C on (pressure rising) 2.25 ± 0.2 bar (32.6 ± 2.9 lbf/in
2)
⇒ A/C off (pressure falling) 1.96 ± 0.2 bar (28.4 ± 2.9 lbf/in
2)
High pressure limit:
⇒ A/C off (pressure rising) 31.4 ± 2.0 bar (455.3 ± 29 lbf/in
2)
⇒ A/C on (pressure falling) 25.5 ± 2.0 bar (369.8 ± 29 lbf/in
2)
AIR CONDITIONING
REFRIGERANT RECOVERY, RECYCLING AND RECHARGING 82-1
AIR CONDITIONING REFRIGERANT RECOVERY, RECYCLING AND RECHARGING
Refrigerant recovery - recycling and
recharge
$% 82.30.02
Refrigerant recovery
WARNING: Servicing must only be carried
out by personnel familiar with both the
vehicle system and the charging and testing
equipment. All operations must be carried
out in a well ventilated area away from open
flame and heat sources.
1.Remove dust caps from high and low pressure
connectors.
2.Connect high and low pressure hoses to
appropriate connections.
3.Open valves on connectors.
4.Turn valves on refrigerant station to correct
positions.
5.Turn process switch to correct position.
6.Turn main switch to 'ON'.
7.Allow station to recover refrigerant from
system.
WARNING: Refrigerant must always be
recycled before re-use to ensure that the
purity of the refrigerant is high enough for
safe use in the air conditioning system.
Recycling should always be carried out with
equipment which is in compliance with SAE
J2210. Other equipment may not recycle
refrigerant to the required level of purity. A
R134a Refrigerant Recovery Recycling
Recharging Station must not be used with
any other type of refrigerant. Refrigerant
R134a from domestic and commercial
sources must not be used in motor vehicle
air conditioning systems.
8.Close valves on refrigerant station.9.Turn main switch to 'OFF'.
10.Close valves on connectors.
11.Disconnect high and low pressure connectors.
12.Fit dust caps to connectors.
13.Open tap at rear of station to drain refrigerant
oil.
14.Measure and record quantity of refrigerant oil
recovered from system.
15.Close tap at rear of station.
Evacuation
1.Remove dust caps from high and low pressure
connectors.
2.Connect high and low pressure hoses to
appropriate connections.
3.Open valves on connectors.
4.Turn valves on refrigerant station to correct
positions.
5.Turn Process switch to correct position.
6.Turn main switch to 'ON'.
7.Allow station to evacuate system.
Recharging
CAUTION: The system must be evacuated
immediately before recharging
commences. Delay between evacuation and
recharging is not permitted.
1.Close valves on refrigerant station.
2.Close valve on oil charger.
3.Disconnect yellow hose from refrigerant
station.
4.Remove lid from oil charger.
5.Pour correct quantity of refrigerant oil into oil
charger.
+ GENERAL DATA, Air Conditioning.
6.Fit lid to oil charger.
7.Connect yellow hose to refrigerant station.
8.Open valve on oil charger.
9.Move pointer on refrigerant gauge to mark
position of refrigerant drop.
10.Slowly open correct valve on refrigerant station
and allow vacuum to pull refrigerant into
system.
11.Close valve on refrigerant station when correct
amount of refrigerant has been drawn into air
conditioning system.
+ GENERAL DATA, Air Conditioning.
12.Turn main switch to 'OFF'.
13.Close valves on connectors.
14.Disconnect high and low pressure connectors.
15.Fit dust caps to connectors.
M82 0728