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9/26/2017

Service Manual Model J

http://www.sky-net.org.uk/kelvin/diesel/j_range/man/index.html

3/17

*8. OIL DRIPS.--The gauze strainer situated in the bottom of the crankcase is
sufficiently close to catch anything which would choke the drip nozzles; nevertheless,
it is advisable to inspect the drips occasionally. This may be done by turning the
engine with the sparking plugs slackened. The nozzles are removable, they differ in
size; each is numbered, the largest should be forward. The nozzles are graded in size
to suit a shaft rake of 1 inch in 18 inches, but are suitable for rakes up to 1 in 9. The
rake will normally increase when under way, and 1 in 9 is the maximum permissible
in this condition.

*9 OIL TEST COCK.--To test the oil circulating pump, open the little cock on
crankcase inspection door, when oil should drip from it slowly at all engine speeds.

10. OIL HOLES.--In each bearing will be found an oil hole. See that it remains clear.

11. OIL PUMP.--The strainer is visible when the oil has been pumped out. Examine it
to time to see that it remains clear.

12. CRANKCASE PUMP.--This pump has no valves and must be operated as
follows :- the cut in the handle must be towards the engine on the upstroke and
towards the pipe on the downstroke. If the pump will not start put a little oil in by the
air hole to seal the piston.

*13. DAILY ATTENTION 

(see oiling diagram)

.--(a) Open the cock on the sump of

the fuel tank to discharge water and sediment: (b) try the oil test cock 

(9)

(c) fill the

oil wells on the cylinders; (d) oil the pump gear at three points, the starting valves, the
operating cams, and the coupling of the Bosch pump. Check the level of the oil in the
crankcase, reverse gear case and governor 

(46)

.

14. WEEKLY ATTENTION.--Draw a sample of oil from the crankcase by means of
the pump 

(12)

, using a clear glass bottle to detect the presence of water. If the oil has

become fouled by water or sediment, renew it. Discoloration is not harmful. Examine
the water pump strainer 

(66)

. Oil the starting handle by the hole at the end.

15. MONTHLY ATTENTION.--(a) Test the oil drips 

(8)

(b) clean out the crankcase

if the sediment is up to the strainer or the oil requires renewal; (c) tighten the packing
gland of the water pump with the finger pins provided 

(69)

(d) tighten the gland of

the governor if leaking 

(46)

(e) clean the fuel filter 

(37)

(f) renew the oil in the

reverse gear once in 300 hours of running; (g) grease the thrust box with the grease
gun supplied.

16. ANNUALLY.--A hard working engine should be over- hauled once a year, and
the overhaul should be sufficiently extensive to make every part good for another
year's service. The practice of running an engine until trouble develops is equivalent
to overhauling by instalments, a costly method.

    Before starting the work remove all surplus gear out of the engine room. Provide, if
possible, a work bench, a paraffin wash tray and cotton waste. Wash down the engine
with paraffin to loosen the nuts and soften the rust. Order all necessary replacements
by telegraph to avoid delay. Proceed as follows.

Summary of Contents for J

Page 1: ...O ENGINES PROPERLY INSTALLED IN VESSELS WHICH OPERATE IN NORMAL WATERS IN DIRTY WATERS WHERE SAND SEAWEED JELLYFISH OR REFUSE MAY FOUL THE COOLING SYSTEM SPECIAL CARE MUST BE TAKEN TO KEEP THE WATER I...

Page 2: ...at 100 Fahrenheit and the oil remains uid at 20 Fahrenheit As Diesel fuels are variable it is desirable to draw a sample in a glass from every consignment Oil having ne sediment in suspension has a du...

Page 3: ...ank to discharge water and sediment b try the oil test cock 9 c ll the oil wells on the cylinders d oil the pump gear at three points the starting valves the operating cams and the coupling of the Bos...

Page 4: ...pples h Drain the governor case and re ll 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...

Page 5: ...n When engine res 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 engin...

Page 6: ...e If these conditions have not been ful lled report the arrangement and the engine number 31 SMOKE AT THE EXHAUST a Cylinders too cold due to the engine being run at speed with the clutch out 23 b oil...

Page 7: ...sure exceeds the compression pressure The valve should then open and close promptly when injection has ceased 39 INJECTOR NOZZLE To inspect this rst remove the injector from the cylinder then unscrew...

Page 8: ...instruction plate on governor If the engine is running the case can be lled by opening one of the injector drain valves 42 If the engine is stopped the lling must be done through the hinged cover use...

Page 9: ...If the contact points wear rapidly 50 54 MAGNETO DISTRIBUTOR Some distributors have carbon brushes which wear The dust produced must be removed from time to time When the brushes are worn down they s...

Page 10: ...han are required The super uous sparks are led by cable to a sparking plug carried in a holder on top of the crankcase This plug and its connections must be kept in working order or the magneto may be...

Page 11: ...e completely renewed each time the engine is overhauled because in time it loses its grease and will score the rod The valve seats are renewable and held in position by solder If the body of the pump...

Page 12: ...lack in their grooves ring groove wear is in turn due to cylinder wear and cylinder wear according to the latest opinions is due partly to high gas pressure and partly to corrosion resulting from comb...

Page 13: ...ap the edges may stand above the ush and it is necessary rst to le them ush The bedding of the bush should be carried out by the use of red lead and a scraper in the ordinary manner All bolts must be...

Page 14: ...ion plate b shafts out of line remove shaft coupling and check alignment of shafts with steel rule or the blade of a carpenter s square 106 Levelling washers were supplied to be used below the engine...

Page 15: ...r length beam and if possible the speed of the boat also the full speed of the engine 102 PROPELLER SHAFT VIBRATION Causes a Lack of clearance between propeller and woodwork 101 b propeller blade bent...

Page 16: ...is imminent 109 JOINTS Each boat should carry a stock of joints obtainable from us In cases of urgency joints may be cut from certain materials obtainable from mill furnishers or motor dealers For exh...

Page 17: ...ning a tightening pressure on the nut 115 KELVIN STEERING AND CONTROL COLUMN This should be installed according to the catalogue The stopper chain should be adjusted to allow the helm over 45 degrees...

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