Kelvin Diesels J, Special Note, Page: 4 / 17

9/26/2017 Service Manual Model J
http://www.sky-net.org.uk/kelvin/diesel/j_range/man/index.html 4/17
(a) Withdraw the pistons (74) . Service the ring grooves if necessary (75) . If the
piston pins are slack, it may be necessary to renew both pistons and pins. Measure the
cylinder wear
(63) . If the liners are renewed it will pay to renew the pistons and the
rings unless these are in first-class condition.
(b) Remove the cylinder heads (68) and wash out the water passages. Remove the
inlet water connections to the cylinders and see that the pipes and passages are clear.
Withdraw the valves and renew, or re-machine, any which are badly worn
(72) . If the
valve seats cannot be restored by grinding borrow a cutter from us. Examine one or
more of the valve plungers. Avoid disturbing the compression chambers
(70) .
(c) Examine and tighten, if necessary, the bearings of the crankshaft. See that the
flywheel bolts are secure
(78) .
(d) Clean out the exhaust manifold and silencer.
(e) Clean the magneto. Adjust the contact breaker (52) and renew the wires if not
good for a year's service.
(f) Clean the injectors and nozzles (39) , the fuel filter (37) ; blow through the fuel
pipes; drain the water and sediment from the tanks.
(g) Clean the oil filter, and the oil nipples.
(h) Drain the governor case and refill it with Diesel fuel. Add packing to the gland
if necessary.
(j) If the valves or valve seats of the water pump are badly worn renew them.
Examine the valve springs. Tighten the verrule which is within the pump ram
(69) .
Renew the packing.
(k) Detach the shaft coupling; examine the clutch thrust bearing and renew it if
damaged by rust
(96) . Examine the reverse gear. Renew the chain if it is striking
anywhere. See that the ahead clutch is secure on the crankshaft (89) . Examine all
bolts. Rejoint the case with cement; check the alignment of the shaft and raise the
engine, if necessary, on levelling washers obtainable from us.
(1) Examine the propeller (100) and the Cutless rubber bearing. Renew the packing
in the stuffing box (99) .
(m) Scrape the rust off the engine and the tanks, if necessary, and repaint with
Kelvin paint.
17. STARTING BY HAND AND PETROL.--Open injector drains (42) . Remove
magneto stopping terminal from its pin. Put reverse gear at neutral. Set governor lever
in mid position. Turn chang-over valves to petrol. Put petrol in carburettor
(49) . Prime
cylinders with petrol oil mixture (21) . 5 to 10 squirts per cylinder ascertain correct
quantity by trial. Pull engine over compression by handle. When engine starts, turn
one changeover valve to Diesel and close its injector drain. When the cylinder fires
repeat the operation for the remaining cylinders but consume all the petrol in the