Engine Coolant; To Drain The Cooling System - Perkins 4.108 Workshop Manual

OPERATING AND MAINTENANCE-C.4
6. Drain the cooling system, see below. To give
protection against corrosion, it is better to fill the
cooling system with a coolant that has a corrosion
inhibitor, see 'Engine Coolant' below. If frost
protection is needed, use an antifreeze mixture.
If no frost protection is needed, use water with
an approved corrosion inhibitor mixture.
7. Run the engine for a short period to send the
lubricating oil and coolant around the engine.
8. Clean out the engine breather pipe and seal the
end of the pipe.
9. Remove the atomisers and spray POWERPART
Lay-Up 2 into each cylinder bore. If this is not
available, clean engine lubricating oil will give a
degree of protection. Spray into the cylinder
bores 140 ml
L1-
pint) of lubricating oil divided
evenly between the four cylinders.
10. Slowly turn the crankshaft one revolution and then
install the atomisers complete with new seat
washers.
11. Remove the air filter and any pipe installed
between the air filter and induction manifold.
Spray POWERPART Lay-Up 2 into the induction
manioold. Seal the manifold with waterproof tape.
12. Remove the exhaust pipe. Spray POWERPART
Lay-Up 2 into the exhaust manifold. Seal the
manifold with waterproof tape.
13. Remove the lubricating oil filler cap. Spray
POWERPART Lay-Up 2 around tne rocker shaft
assembly. Fit the filler cap. Where the oil filler
cap is not on the cylinder head cover, remove
the cover to spray the rocker shaft assembly.
14. Disconnect the battery and put it into safe storage
in a fully charged condition. Before the battery is
put into storage, give the battery terminals a pro-
tection against corrosion. POWERPART Lay-Up 3
can be used on the terminals.
15. Seal the vent pipe of the fuel tank or the fuel
filler cap with waterproof tape.
16. Remove the fan belt and put it into storage.
17. To prevent corrosion, spray the engine with
POWERPART Lay-Up 3. Do not spray inside the
alternator cooling fan area.
NOTE: Before the engine is started after a period
in storage, operate the starter motor with the
engine stop control in the 'off' position until
oil pressure shows on the oil pressure gauge
or the oil warning light goes out. If a solenoid
stop control is used, this will have to be
disconnected for this operation.
If the engine protection is done correctly
accoding to the above recommendations, no
corrosion damage will normally occur.
Perkins Engines Ltd. are not responsible for
any damage that occurs in relation to a
service storage period.
Engine Coolant
1 he quality of the coolant used can have a large
effect on the efficiency and life of the cooling system.
The recommendations given below can be of assistance
in the maintenance of a good cooling system with
frost and/or corrosion protection.
1. Where possible, use clean soft water.
I
2. If an antifreeze mixture, other than Perkins
POWERPART, is used to prevent frost damage,
it must have an ethanediol (ethylene glycol) base
with a corrosion inhibitor. It is recommended
that the corrosion inhibitor is of the sodium
nitrate/benzoate type. The antifreeze mixture
must provide cooling/corrosion protection at
least as good as the requirements of the
standards below:
UK: 8S.6580: 1985: "Specification for corrosion
inhibiting, engine coolant concentrate (antifreeze)".
U.S.A. ASTM 03306-74 'Ethylene Glycol Base Engine
Coolant'.
Australia AS 2108-1977 'Antifreeze Compounds and
Corrosion Inhibitors for
Engine Cooling Systems'.
When Perkins POWER PART antifreeze is used, the
correct mixtures of antifreeze and water are as
given below. Perkins POWERPART Antifreeze
fully passes the above standards.
Lowest Temperature
of
Protection Needed
-12°C ( 10°F)
-18°C ( O°F)
25°C ( 13°F)
-37°C (-34°F)
%Volume
of
POWERPART Antilreeze
25
33
40
50
Mixture Ratio by
Volume
POWERPART
Antifreeze:Water
1:3
1:2
1:1.5
1 :1
The quality of the antifreeze coolant must be
checked at least once a year, for example, at
the start of the cold period.
3. When frost protection is not necessary, it is still
an advantage to use an approved antifreeze
mixture as this gives a protection against
corrosion and also raises the boiling point of the
coolant. A minimum concentration of 25% by
volume of antifreeze is necessary, but it is our
recommendation that 33% concentration by
volume is used.
If an antifreeze is not used, add a correct
corrosion inhibitor mixture to the water.
Change the water/corrosion inhibitor mixture
every six months or check according to the
inhibitors manufacturer's recommendations.
Note: Some corrosion inhibitor mixtures contain
soluble oil which can have an adverse effect on
some types of water hose.
If the correct procedures are not used, Perkins Engines
Ltd., can not be held responsible for any frost or
corrosion damage.
To Drain the Cooling System
1. Ensure that the vehicle or machine is on level
ground.
2. Remove the radiator filler cap.
3. Remove the drain plug from the side of the
cylinder block (see engine views) to drain the
engine. Ensure that the drain hole does not
have any restriction.
4. Open the tap or remove the drain plug at the
bottom to drain the radiator. If a tap or plug is
not fitted to the radiator, disconnect the bottom
radiator hose.
5. Where necessary, flush the system with clean
water.
6. Fit the drain plugs and radiator cap. Where
necessary, close the radiator tap or connect the
radiator hose.