18
SC213 Diesel Engines
conditions or alternatively, it may be left primed with
normal fuel oil.
If the engine is laid for several months then the fuel oil
contained in the remainder of the fuel system should
also be dispelled and the fuel filter renewed, following
which the system may then be recharged with fresh
clean fuel oil.
Before starting, the engine should be cranked over by the
starter motor with the stop control in the ’off’ position
until oil pressure is recorded or the oil warning light is
extinguished. Do not rapidly accelerate the engine after
initial start; allow it to run at slow speed for approximately
two minutes to ensure good oil circulation before
accelerating to higher speeds.
Note: Where a preservative is used in the lubricating oil
sump, this should be drained off and replaced by normal
lubricant prior to restarting the engine at the end of the
storage period.
FROST PRECAUTIONS
Precautions against damage by frost should be taken if
the engine is to be left exposed to inclement weather
either by adequately draining the water system or where
this is not convenient an anti-freeze of reputable make
and incorporating a suitable corrosion inhibitor may be
used.
The coolant solution containing 25 per cent anti-
freeze manufactured to BS 3151 in water in a properly
maintained engine should maintain its anti-freeze and
anti-corrosive properties throughout the winter season
and in general, a safe life of 12 months may be
reasonably expected.
Remove the radiator pressure cap, drain the cooling
system by opening the radiator drain tap and the cylinder
block drain tap.
When draining the cooling system ensure that the engine
is in level.
Operators are advised to take precautions when operating
in temperatures below freezing point:
1. Before starting the engine, turn the fan and water
pump by hand. If freezing has taken place, this
should free any ice formation.
2. If it is impossible to turn the pump by hand, the
radiator and engine should be filled with warm
water.
After an anti-freeze solution has been used, the cooling
system should be thoroughly flushed in accordance
with the manufacturer’s instructions before refilling with
normal coolant.
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