Kelvin Diesels J, Special Note, Page: 5 / 17

9/26/2017 Service Manual Model J
http://www.sky-net.org.uk/kelvin/diesel/j_range/man/index.html 5/17
carburettor. Put the sparking plugs out of action by placing the stopping terminal on
its pin. If the engine does not take Diesel fuel, suspect an air lock
(36) .
18. STARTING BY ELECTRIC STARTER AND PETROL.--Proceed as in (17)
but, instead of using starting handle, press starter button. When engine fires, release
button.
19. STARTING BY HAND WITHOUT PETROL.-- Close injector drains (42) .
Decompress all cylinders. Turn engine by starting handle until speed is attained then
quickly put one cylinder on full compression. When engine starts repeat the operation
for all cylinders.
If starting is difficult, prime all the cylinders heavily with oil. The effect of this is
two-fold
(a) The volume of the combustion chamber is reduced and the compression
pressure thereby increased.
(b) Leakage past the piston is reduced.
If the engine is easily turned use lubricating oil for this purpose, but if the engine is
stiff to turn use fuel oil.
20. STARTING BY ELECTRIC STARTER WITH OUT PETROL.--Proceed as
in
(19) but, instead of using starting handle, press starter button. When engine fires,
release button.
*21. PETROL/OIL MIXTURE.--Should be in the proportion of 16 to 1. This is
equivalent to adding one pint of lubricating oil to 2 gallons of petrol.
*22. STOPPING.--Slow the engine to half speed. Put the reverse gear at neutral and
slacken the sparking plugs. Open. one injector drain and quickly turn its change-over
lever to the petrol position. Repeat operation for each cylinder.
*23. IDLING.--The engine may be run without load for any length of time provided
that it is run slowly. If permitted to run at speed without load, the cylinder will cool
down and the engine will knock
(76) .
24. ENGINE FIRES PRIMING AND STOPS.-- Petrol spray jet choked (48) ;
carburettor empty.
25. ENGINE NOT FIRING PRIMING.--(a) Sparking plugs damp (61) ; (b) engine
overprimed-turn with sparking plugs slackened; (c) carburettor over-filled (49) ; (d)
stopping wire not detached; (e) impulse starter not in action; (f) lack of spark (59) ; (g)
magneto contact breaker stuck (52) ; (h) magneto wrongly set (51) .
26. ENGINE RUNS IRREGULARLY.--(a) Clean filter: if two filters are used
change over to the second filter; (b) air in the fuel system: open the cock at the
forward end of the fuel pump; if this stops the engine the filter is choked; (c) injector
valve sticking
(43) ; (d) valve clearance not correct (71) ; (e) valve stems sticking-fill
the oil wells with fuel oil; (f) examine the feed pump if one is fitted.