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Instruction Book for Bolinder Single & Twin-cylinder Engines
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Regular Checking And
Preventive Maintenance
Every 50 Hours - Every 200 Hours
- Every 500 Hours -
Single-cylinder Engines -
Every 1000 Hours -
Every 2500 Hours
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Daily
1 Make sure
that the cooling system is properly filled.
2 Check that oil
level in the engine and reverse-reduction gearbox lies
between the dipstick
marks. When oil consumption has lowered the oil level to the
vicinity of the lower level mark,
top up with new oil. Checking should be done after the engine
has been standing idle long
enough for the oil to run down into the sump. |
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3
See that there is sufficient fuel in the tank. If fuel
is filled from barrels, make sure that they are
stored on the site a day or two before tapping them. This is
done to allow any foreign particles
time to sink to the bottom. Always tap the barrels with a
pump, taking care never to lower it's
suction pipe to the bottom of the barrel. The sludge, which
always contains foreign particles
and impurities, must be discharged. |
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4
Check condition of air cleaner. As required, clean the
air filter and re-dip in oil. Let the oil run
off before re-fitting the filter.The condition under which
the engine operates are, of course
decisive for how often the filtermust be claimed. However, it
will soon be discovered whether
the filter must be cleaned daily or if this interval can be
extended.
5 Check that no oil, fuel, or water leaks out
of the engine anywhere. If a leak is found, see that it
is remedied as soon as possible. Try also to keep the engine
clean ; it will then be easier to
find any leaks. A clean engine is also much easier to keep in
good trim. |
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Every
50
Hours
1 Check belt
tensions. Adjust belt between crankshaft and generator
with the help of the idler
pulley. it must be possible to depress the belt about 3/8 in
( 10 min. ) under a pressure of 11 lb
( 5 kg. ) at the arrow. |
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2
Adjust the cooling water pump belts by removing a
suitable number of links. It must be
possible to depress the belts about 3/8 in. ( 10 mm. ) under
a pressure of 11 lb. ( 5 kg. ) at the
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3
Check that the battery electrolyte is about 3/8 in. ( 10
mm. ) above the plates. top up with
distilled water if the level is too low. Make sure that the
cable lugs are clean, properly
tightened, and smeared with a thin coat of vaseline or or
similar to protect them against
corrosion. be careful when working on the battery, the
electrolyte is corrosive. The charging
of the battery can be checked with a hydrometer which shows
the specific gravity of the
electrolyte ( fig 41 ). This is at a fully charged battery
1,275-1,285. If the hydrometer shows a
specific gravity of 1,230 the battery must be charged as soon
as possible at a batter charging
station. |
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4
Drain off sludge from fuel tank. Open the cock and let
some of the fuel run out and take the
sludge with it. This should be done when the fuel has stood
still for at least one whole night.
Every
200 Hours
1 Change the
engine oil. See that the engine is run warm before
pumping out the oil. Turn the
cock on the crankcase pump suction side out from the engine
and pump out the oil. Make
sure that the reverse-reduction gearbox is not drained by
mistake. Fill the sump with HD oil
to the upper level mark on the dipstick. Do not forget that
it must be HD oil, never ordinary
engine oil ! never rinse out the engine with flushing oil ;
bearing pressures in a diesel engine
are too high to permit the use of such oil. |
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2
Lubricate the starting motor of the two-cylinder engine.
( the starting motor of the single
cylinder engine is not fitted for lubrication. ) Do not add
more than a few drops at a time - too
much oil may damage the motor.
Every
500 Hours
1 Check the
valve clearance with feeler gauges. This must be done
when the engine is warm.
Correct clearance is 0.016 in. ( 0.40 mm. ) for inlet valves
and 0.018 in. ( 0.45 mm. ) for exhaust
valves. Necessary clearance adjustment can be done by
loosening the lock nut and turning
the adjusting screw. Re-tighten the adjusting screw
thoroughly . Do not check or adjust valves
when the engine is running ; valve and piston might then
knock together and cause damage.
Correct valve adjustment is of great importance and we
therefore recommend careful study of
the following detailed description of the procedures to be
followed. |
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Single
-Cylinder Engines
Determine the
crankshaft position where the exhaust valve closes and
the inlet valve is just about
to open. At this instant the piston is at T.D.C. Now
rotate the crankshaft a half turn and adjust both
valves. crankshaft rotation can be made easier by
setting decompression lever as the open
position.
Two-cylinder
Engines
Proceed as for
single-cylinder engines and adjust one cylinder at a
time.
NOTE THAT VALVE ADJUSTMENT IS DONE WHEN THE ENGINE IS
WARM.
2 Replace
lubricant cleaner insert. This is done by loosening
screw in lid, lifting off lid and
removing insert. Clean lubricant cleaner thoroughly and fit
new insert. Never use cotton waste
for cleaning. See that the gasket seals properly when the
cleaner is re-fitted. If it does not, fit a
new one. Take care that no dirt gets into the piping. |
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3
Check injector opening pressure and spray shape. This
work should be done by an authorized
shop having the necessary testing pump. Spray shape can,
however, be checked by removing
the injector from the engine and re- fitting it with the
nozzle pointing outwards from the engine.
Open the de-compression drive, set the speed control lever
for full fuel supply and rotate the
crankshaft. The fuel must leave the nozzle thoroughly
atomized and the spray must cut off
sharply after delivery of the fuel. If the fuel discharges as
a jet or dribble from the nozzle after
injection, the nozzle must be overhauled.
Exercise care when testing, the sprays posses
considerable penetrative force and can harm
eyes etc. |
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Every
1000
Hours At
1000-hour intervals the following work should be
performed by an authorized workshop or
mechanic : |
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1
Check injection pump setting
2 Check centrifugal governor ( Max . speed and idling )
3 Check cold-start device
4 Replace element in fuel filter
5 Check fuel feed pressure
6 Clean strainer in oil sump
7 Take apart and thoroughly clean air cleaner
8 Check starting motor and generator brushes
9 Check thermostat |
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Every
2500
Hours 1
De-carbonize engine and grind valves
2 Recondition starting motor and generator
If oil consumption is excessive ( more than 0.053 oz/h.p.h.
( 1.5 g/crh. ) excl. oil changes ) or if
there are other signs of wear.
1 Replace piston rings and check pistons and
liners
2 If necessary, recondition engine |
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