Triumph MAYFLOWER 1951 Instruction Book Download Page 65 | Manualshive

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64

ELECTRICAL SYSTEM

- Horns, etc.

WINDSCREEN WIPER

For operation see page 9

,

for lubrication see page 32,

WINDTONE HORNS

Each electric horn, before being passed out of the works, is adjusted to give its best
performance, and will give long periods of service without any attention. No adjustment is
required in service.

If for any reason the note is unsatisfactory do not attempt to dismantle the horn, but return
it to a Lucas Service Depot for examination.

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Summary of Contents for MAYFLOWER 1951

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Page 4: ...lubrication The book is divided into a number of sections each being indicated by page headings as follows Management of Car General Upkeep covering lubrication care of tyres and bodywork Running Adjustments Electrical Wiring and Lighting System Service There is an index at the end of the book When reference is made to the left hand or right hand side of the car this is as viewed from the driver s...

Page 5: ... 1 3 4 2 Brake horse power 38 at 4 200 R P M Oil Capacity Engine 6 pints 3 4 litres Gearbox 1 pints 0 7 litres Rear axle 1 pints 0 85 litres Water Capacity of cooling system only 12 pints 6 8 litres if heater fitted 13 pints 7 4 litres Fuel Capacity 10 galls 45 litres Dimensions Wheelbase 7 0 2 13 m Track Front 3 10 1 17 m Rear 4 1 1 25 m Ground clearance under axle 8 20 3 cm Turning circle betwee...

Page 6: ...lve closes 10 after top dead centre The equivalent distances measured round the flywheel adjacent to the starter teeth 10 31 32 2 46 cm 50 4 13 16 12 125cm VALVE TAPPET CLEARANCES measured with engine cold Inlet 0 015 0 37 mm Exhaust 0 015 0 37 mm IGNITION TIMING Set to fire 2 before top dead centre distributor contact points just opening As the advance is entirely automatic the setting is at full...

Page 7: ... should avoid continued over revving which is most likely to occur in the lower gears We strongly recommend that the driver shall not continually exceed the car speeds given below which correspond to approximately 4 000 engine r p m The above speeds are given in round figures so that the owner can easily remember them See page 16 for running in speeds recommended ...

Page 8: ...Accelerator The pedal is connected by a short Bowden cable to the carburettor throttle Do not depress pedal when starting engine from cold Brake Operating four wheel hydraulic brakes Clutch Press pedal to disengage drive from engine to gearbox Do not rest your foot on the pedal when driving or hold clutch out to free wheel as this will cause unnecessary wear to the carbon thrust pad ...

Page 9: ...ng the gears see Figs 3 or 4 Always select neutral position before starting the engine Handbrake Pull to operate rear wheel brakes The lever will be held in any position by the ratchet To release ratchet first pull lever and press trigger Heater Controls see page 67 Radio Controls see page 65 Scuttle Ventilator With heater fitted pull knob to open ventilator Without heater fitted push knob to open...

Page 10: ...t operated switch to dip head light press again for straight ahead position Horn Press button in centre of steering wheel to operate horns Ignition Turn clockwise to switch on Do not leave the switch on when engine is stationary to avoid the battery being discharged by the current flowing through the coil windings Panel and Interior Lights Pull knob to switch on panel light turn slightly clockwise...

Page 11: ...elling at normal speeds and the oil is hot Of course only a low oil pressure will be registered when the engine is idling or running at low speeds this is quite normal Speedometer Registers vehicle s speed and total distance covered and is fitted with a trip which is cancelled by pushing the serrated knob which is situated at the right of the instrument panel and turning anti clockwise Warning Lig...

Page 12: ...application of a gauge directly to the valve The correct pressures are given on page 33 It is usually a good plan to have the spare tyre inflated to a slightly higher pressure than that recommended for the rears i e approximately 30 lb sq in 2 11 kg sq cm It will be a simple matter to adjust the pressure should the tyre be required for use The acid level in the battery should be examined fortnight...

Page 13: ...s are provided on the plugs to minimise this trouble If the battery has been allowed to get into a run down condition it is best to use the starting handle When the engine fails to start do not keep the choke control out too long or the sparking plugs will become wet with petrol and it will be necessary to remove and dry them It is important that the accelerator pedal should not be depressed when ...

Page 14: ...ty is experienced in starting due to the use of the choke device when the engine is hot the mixture may be momentarily too rich in which case depress the accelerator to the full extent whilst operating the starter with the choke control pushed right in Warming up In order to minimise cylinder wear the engine should be warmed up quickly when starting from cold in winter the engine may be idled for ...

Page 15: ...ght hand side If a heater is fitted see also page 68 Filling When filling the radiator it is advisable to re check the water level after the engine has been warmed All the air may not have been forced out until the valve in the thermostat has been opened Anti Freeze Mixtures We recommend owners to use Smith s Bluecol noncorrosive anti freeze inhibited Glycol base compound in order to protect the c...

Page 16: ...em ample protection against sudden fall in temperature by using in your car the 20 proportion of Bluecol Caution Before adding the anti freeze preparation make sure that the water hose clips are securely fitted and the cylinder head nuts are tight If the solution is able to escape through a leaking gasket into the cylinders it may be burnt into a tacky substance capable of doing harm to the engine...

Page 17: ... in although this involves some slight inconvenience in giving attention to a new engine the trouble is well repaid by the results obtained It is inadvisable to drive a new car fast or to run the engine at high speed in the low gears The good and lasting bearing surfaces obtainable by careful running in are well worth the patience required to drive the car at only moderate speeds for at least the ...

Page 18: ...HE CAR To obtain a minimum of clutch wear always start away in first gear unless facing downhill in which case second gear may be engaged If the driver engages a higher gear in order to save a gear change the clutch will have to be slipped unduly resulting in unnecessary wear Gear Changing The gear lever situated on the steering column operates through the system of a sliding rod connecting rods a...

Page 19: ...akes The four wheel hydraulic brakes are very powerful and require only a small effort to slow down the car Do not apply the brakes harshly except in emergency as this only causes undue tyre wear and discomfort to passengers Engine as a Brake When travelling downhill using the engine as a brake i e with gear engaged do not switch off the ignition This would allow unburnt mixture to accumulate in t...

Page 20: ...ing to use this type of lubricant would require an additional grease gun for general chassis lubrication retaining the other gun for wheel hub lubrication only Whilst the above applies to the owner desiring to attend to the lubrication of his car personally most owners will prefer to have these operations carried out by a Triumph Agent THE NECESSITY FOR HIGH QUALITY OIL There are many reputable oi...

Page 21: ... ingress of air and by draining when the oil is warm after a run of at least 10 miles or 15 km Under these conditions impurities in the oil will be well mixed and will flow away with the oil during the draining process Flushing Oils see recommended Lubricants page 75 or 76 We advocate the occasional use of flushing oil during the draining and refilling operation of the engine sump The normal proce...

Page 22: ...haft journals crankpins camshaft bearings and tappet guides Oil thrown from the connecting rod bearings lubricates the pistons which in turn lubricates the connecting rod little ends and the timing chain is fed with oil from the camshaft bearing Suitable oil seals are embodied at the front and rear ends of the crankshaft which effectively prevent oil leaking along the shaft Every 200 miles or 300 ...

Page 23: ...ld be smeared lightly with engine oil A pronounced squeak occurs when the cam is quite dry Withdraw the moulded rotor arm from the top of the spindle care should be taken because this part is made of a brittle material but do not remove the screw exposed to view Apply by means of oil can a few drops of thin machine oil around the edge of the screw and down the hole in the centre to lubricate the c...

Page 24: ...ick is dry the cap should be filled with the recommended grease The bearing at the driving end of the dynamo is packed with grease before leaving the works and after a considerable mileage the dynamo should be removed for cleaning adjustment and repacking of the bearings with grease This should be done preferably by the nearest Triumph or Lucas Service depot The starter is fitted with special bear...

Page 25: ... and refill with fresh engine oil to the level indicated the quantity required will be approximately pint 27 litre Swill the element in petrol drain and replace in chamber CLUTCH SHAFT BEARINGS The oil can should occasionally be applied to the clutch bearings one at each side of the clutch housing the oil holes are accessible from underneath the car This operation requires a pump type of oil can C...

Page 26: ...eeth The sliding action is too severe for normal axle oils so special oils have been developed which contain additives that make the oil capable of withstanding greater pressures however the special additives gradually lose their properties in the course of use and the oil tends to revert to a light gear oil Thus it is advisable to completely drain and replenish with new Hypoid oil every 5 000 mil...

Page 27: ...brake Cables and Conduits To ensure free efficient action it is essential that the handbrake cables be kept well lubricated particularly where they are enclosed by the conduit A grease nipple is fitted in the conduit located underneath the right hand side of chassis to the front of the rear axle to which the grease gun should be applied every 5000 miles 8 000 km This operation should be carried ou...

Page 28: ...ller cap on the brake fluid reservoir integral with the master cylinder see Fig 12 should be removed every 5 000 miles 8 000 km the fluid level checked and topped up if necessary Remove the cover immediately to the rear of the brake pedal underneath the carpet to gain access to the filler plug and always clean the area around the plug before removing it this will lessen the risk of grit falling in...

Page 29: ... the independent suspension it is essential that it is properly and regularly lubricated The distance of 1 000 miles 1 600 km between lubrication of the suspension pivots should be regarded as a maximum WHEEL HUBS The front and rear hubs require a small but regular supply of grease as specified on page 79 or 80 every 5 000 miles 8 000 km It is essential that the correct type of grease be used this...

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Page 31: ...ive a sharp tap with the hand on the plate to spring it into the correct position PROPELLER SHAFT The universal joints are of the needle roller bearing type and each is fitted with a nipple for lubrication see Fig 11 page 26 The two nipples should receive attention with the oil gun every 5 000 miles 8 000 km using oil recommended on page 79 or 80 REAR ROAD SPRINGS The spring blades should not be a...

Page 32: ...very 5 000 miles 8 000 km Grease nipples are provided on all steering ball joints and the slave steering pivot see Fig 14 These nipples should receive attention with the grease gun every 1 000 miles or 1 500 km as their duty is high HYDRAULIC DAMPERS The telescopic type dampers fitted do not require any attention such as topping up If they become inoperative they should be serviced by the makers G...

Page 33: ... pedal to spread the oil inside casing DIRECTION INDICATORS A little thin oil should be applied by means of a small brush to the catch pin between the arm and the operating mechanism This can be done when the indicator is switched up Also withdraw the screw on the underside of the arm end and slide off the arm cover Place the connecting wire to the bulb on one side and apply a drop of thin machine...

Page 34: ...in the tread If these are left in they may eventually work through the cover and puncture the tube Fill up any large holes with a suitable compound obtainable for the purpose Oil should not be allowed to get on the tyres If any should accidentally do so clean off by using petrol sparingly Do not drive over sharp edged kerbs or bump them with the side of the tyre as this is liable to fracture the c...

Page 35: ...NT WHEEL ALIGNMENT The alignment of the front wheels is most important in its effect on tyre wear and good steering Excessive toe in will lead to severe tyre wear particularly on the kerb side front tyre Toe in or toe out is the amount by which the front wheels are inclined from parallel Correct Wheel Alignment The wheels should Toe in To Check and Adjust Wheel Alignment Jack up each front wheel i...

Page 36: ...e that the ball joints are in the centre of swing before securely tightening tie rod locking nuts THE JACK A triangulated screw jack is provided which is adapted to lift any wheel of the car as required Fit the jack in position as shown making sure that it is right home in its socket Apply the hand brake or chock the wheels which will remain on the ground before operating the handle If a jack is u...

Page 37: ...fic film which accumulates over the finish is well worth while and special cleaners for the purpose are available The finish will improve in appearance if properly looked after Tar is best removed before it has had time to set This may be done by the aid of a little paraffin or petrol However it often happens that tar becomes firmly attached and attempts to remove it are made when the car is being...

Page 38: ... TOOL STOWAGE The starting handle is clipped against the scuttle see Fig 5 page 11 the jack and tool roll are strapped and clipped to the left hand wheel housing The remaining tools of the kit are kept in the tool roll which may be accommodated under the driver s seat The spare wheel is in a tray immediately underneath the luggage boot To gain access rotate the nut inside the boot with the wheel n...

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Page 41: ... and sparking plug points 101763 Grease Gun 60056 or 59429 Jack 200339 Open Ended Spanner 68 and 75 A flats 101319 Open Ended Spanner 50 and 56 A flats 59426 Open Ended Spanner 37 and 44 A flats 101318 Slip Joint Grips 101308 Starting Handle 200260 Tool Roll 24731 Tube Spanner 68 and 82 A flats 101089 Tube Spanner 50 and 63 A flats 102761 Tyre Levers 2 52322 Tyre Valve Tool 52203 Wheel Nut Spanner...

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Page 44: ...ecessary can then be made see page 56 ENGINE Cylinder Head Nuts After the first 1 000 miles or 1 500 km the cylinder head nuts should be checked with engine cold for tightness in the order shown in Fig 26 Valve Tappet Clearances A clearance between the valve stem and the head of the tappet screw is necessary to ensure correct closing of the valves and efficient running of the engine The correct ru...

Page 45: ...ing fit between the valve stem and the tappet adjusting screw Now tighten the lock nut and check that the clearance has not altered Ignition Timing The ignition advance is automatic and when fully retarded i e engine at rest the ignition should be set to fire 2 before top dead centre The ignition is correctly set at the works and should not normally be adjusted excepting that after the car has cov...

Page 46: ...r body clockwise and vice versa Do not alter the ignition more than 1 at a time 2 on flywheel To obtain top dead centre position turn the crankshaft until the small drilled hole in the belt pulley is in line with the pointer attached to the timing cover The firing order is 1 3 4 2 and the sparking plug leads should be attached to the distributor as shown in Fig 28 The cylinder numbers are counted ...

Page 47: ...rode and the earth point are originally set and should be maintained at thirty two thousandths of an inch 0 8 mm to ensure even running to the engine Incorrect gap setting may cause misfiring or erratic slow running Faulty plug leads or cracked porcelain insulation in the sparking plug will also cause faulty ignition see also page 12 Sparking plugs should be thoroughly cleaned by a sandblasting pr...

Page 48: ...sets the full open position Don t interfere with this With the latest starting jet settings no air jets are fitted into the start box CHOKE AND JET SIZES SLOW RUNNING ADJUSTMENT We recommend that the carburettor be adjusted to run at a fairly fast idling speed because an engine which is regulated to a minimum speed when hot is apt to stall when cold Commence with the regulator screw screwed out 1 ...

Page 49: ...he filter incorporated in the fuel pipe union can be removed for cleaning after the union bolt has been removed NOTE A fully comprehensive booklet on each type of Solex carburettor can be obtained post paid on remittance of 1 to Solex Ltd 223 231 Marylebone Road London N W I Besides giving full instructions on tuning the carburettor the booklet contains a helpful chart on engine and carburettor fa...

Page 50: ...mber swill the gauze in fuel and replace Make certain that the cork washer lies flat on its seat and makes an air tight joint and that the fibre washer is under the head of the cover screw Tighten the screw just sufficiently to ensure a fuel tight joint Over tightening will either destroy the cork or fibre washers crack the cover or fracture the main casting If the pump fails to supply fuel to the...

Page 51: ...o watch are outlined below 1 Use a tool made of some soft material such as solder for removing the carbon 2 For decarbonising it is not necessary to remove the tappet guide blocks If however they are removed it is essential that the longer set screws secure the central abutment plate If they are used in the two end holes they will project into No 1 and 4 cylinders and damage the pistons Take care ...

Page 52: ...ication that adjustment is required is given when 1 The free pedal movement is reduced to about 6 mm or 2 The free pedal movement increases until the clutch will not be fully released when the pedal is fully depressed It is then necessary to adjust the clearance until there is backlash or free movement of about 13 mm measured at the pedal pad This will provide the 1 5 mm clearance required at the ...

Page 53: ...52 RUNNING ADJUSTMENTS BRAKES Lockheed hydraulic brakes are fitted to all four wheels Two leading shoe type being used on front wheels leading and trailing shoe type on rear wheels ...

Page 54: ...the shoes but fit genuine Lockheed replacement shoes These shoes have the right type of lining machined to the correct radii Should the shoes be removed care must be exercised to ensure that the pull off springs are located behind the shoes and hooked through the correct holes as shown in Figs 32 and 33 Adjustment of Brake Shoes After a considerable mileage it may be found necessary to adjust the ...

Page 55: ... mechanism The rods are correctly set before leaving the works and only maladjustment will result from tampering with the mechanism Bleeding the System Except for periodical inspection of the fluid level in the reservoir chamber and lubrication of the handbrake cables and connections see page 26 no attention should be necessary If however a pipe joint is uncoupled at any time or the wheel cylinder...

Page 56: ...th a suitable spanner 4 The fluid reservoir of the master cylinder must be topped up before commencing the bleeding operation and must be kept at least half filled during the whole operation otherwise more air will be drawn into the system via the master cylinder Always clean the area around the plug before removing it this will lessen the risk of grit falling into the chamber after removal of the...

Page 57: ...ered the chamber After this operation keep the damper the right way up until it is fitted in place LOOSE BOLTS OR NUTS All the vital nuts are locked in position by split pins locking wire or by an additional lock nut or lock washer It is however desirable that the car should be examined every 5 000 miles 8 000 km so that if any nut is found to be loose it may be tightened The wheel nuts can period...

Page 58: ... 000 miles 8 000 km wipe the inside and outside of the moulded distributor cover with a soft dry cloth paying particular attention to the space between the terminals See that the small carbon brush on the inside of the moulding works freely on its holder Examine the contact breaker The contacts must be free from grease or oil If they are burned or blackened clean them with a fine carborundum stone...

Page 59: ...ng slowly the dynamo does not develop sufficient current to charge the battery and under these circumstances the battery would discharge itself through the dynamo if the cut out were not fitted The cut out is operated by the dynamo voltage and when due to increasing speed the dynamo develops sufficient voltage to actuate the cut out the points make contact and so allow current to flow from the dyn...

Page 60: ...on is pressed then the battery is in a rundown condition and the engine should be started by hand If the motor hums but does not engage with the flywheel when the starter button is pressed then a The battery may be in a rundown condition b The brushes are sticking or the commutator requires cleaning c Battery terminals are not clean or secure CONTROL B OX The control box mounted on the wing valanc...

Page 61: ...o the reflector thus no adjustment to focusing is required when a replacement bulb is fitted It is not possible with these types of lamps to alter the direction of dip entirely by fitting bulbs of the opposite dipping characteristics as some of the dip effect is produced by the shape of the glass in the lens Alignment The lamp must be set to ensure that the beam is projected below the horizontal t...

Page 62: ...and 45 apart measured equally about the centre point see Fig 35 Switch on the head lamps and adjust the lamps if necessary until the centre of each circle of light coincides with the centre of its respective cross IF ADJUSTMENT IS NECESSARY PROCEED AS FOLLOWS Withdraw the front rim after removing the securing screw Remove the dust excluding rubber This will reveal three screws which can be adjuste...

Page 63: ...he alignment of the reflector when assembled Rotate the back shell anti clockwise and pull off then the head lamp bulb can be removed Care should be taken to see that the bulb does not drop out Parking Lamps Front Lucas No 989 12 volt 6 watt single contact bulbs fitted To remove bulb peel back the rubber ring and remove rim then the bulb can be withdrawn When replacing rim first slip the edge over...

Page 64: ...ver Interior Lamp Lucas No 254 12 volt 6 watt festoon type bulb fitted To gain access to the bulb pull off the cover Ignition Warning Light Lucas No 987 12 volt 2 2 watt screw cap type bulb fitted The bulb holder can easily be withdrawn from the rear of the panel for bulb renewal Direction Indicators Lucas No 256 12 volt 3 watt festoon type bulbs fitted To replace bulb withdraw the cover as explai...

Page 65: ...lectric horn before being passed out of the works is adjusted to give its best performance and will give long periods of service without any attention No adjustment is required in service If for any reason the note is unsatisfactory do not attempt to dismantle the horn but return it to a Lucas Service Depot for examination ...

Page 66: ...n lead union Aerial The aerial is of the telescopic type located just in front of the windscreen on the right hand side of the body The mast should always be lowered when the set is not operating It is essential to park the mast before entering a garage if the headroom is lower than seven feet CONTROLS The Combined On Off Switch and Volume Control switches the receiver on when turned clockwise and...

Page 67: ...tuning scale immediately above each button Wave change switching is automatically effected when a button is pressed for any preselected station The Tuning Scale is divided into two sections medium wave and long wave and is calibrated in metres To Set Up the Tuning Push Buttons 1 Select the wave band required by pressing the appropriate push button 2 Tune in the desired station by means of the manu...

Page 68: ...d be put to OFF position and both control knobs moved as far as possible to OFF position no appreciable quantity of air will then enter the car via this system If it is desired to use ventilating air only then the ventilation control knob should be moved to COLD position the blower should only be switched on if it is desired to boost the ventilating air supply Above speeds of about 25 30 m p h the...

Page 69: ...e to use anti freeze in the cooling system to prevent damage if this is not done however and the system is drained instead the heater will drain satisfactorily provided the quadrant controls are put in the HOT position during draining so that the manually operated water valve is fully open ...

Page 70: ... to advise a remedy Considerable care is exercised in the choice of all Triumph Agents particularly to ensure that they are suitably equipped to give after sales service MAINTENANCE All our principal Agents hold comprehensive stocks of spares for current models Every TRIUMPH chassis has a distinguishing number This is known as the car commission number and should always be quoted together with the...

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