Jensen 541 Instruction Book Download Page 22 | Manualshive

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Summary of Contents for 541

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Page 2: ... advice and suggestions of the Company s Technical Staff in regard t o lubrication general care and maintenance together with supplementary information regarding the necessary adjustments which may be required from time t o time PRICE 1216 NETT Compiled and Published by JENSEN MOTORS LTD WEST BROMWICH ENGLAND Telephones W B 1112 2 3 Telegrams Expert PAGE ONE ...

Page 3: ... Chassis N o Engine N o Registration N o Original date of delivery from W o r k s PAGE TWO ...

Page 4: ...formation in the simplest form and a lubrica tion chart will be found on page 11 In the rare event of any unforeseen defect o r unusual trouble developing it is requested that the matter be at once brought t o our notice The interest of Jensen Motors Ltd in their productions does not end with the delivery of the Car on the contrary it is the Company s desire t o keep in close touch with all Jensen...

Page 5: ...Light 14 Rev Counter 15 Demister Duct 16 Panel Switch 17 O i l and W a t e r Gauge 18 W i p e r Switch 19 Reserve Warning light 20 Reserve Petrol Switch 21 Screenwasher 22 Reverse Light Switch 23 Ignition and Lamp Switch 24 Heater Switch 25 Horn Push 26 Steering wheel Adiustment 27 Gear Control Lever 28 Handbrake Lever 29 Dipswitch 30 Clutch Pedal 31 Brake Pedal 32 Radiator Flap Shutter INSTRUMENT...

Page 6: ... m and 4000 r p m should not be exceeded W e strongly recommend owners who do not wish t o carry out their own oiling and greasing t o take advantage where possible of the facilities offered by service stations with modern lubrication equipment The illustration on page four shows the general arrangement of controls and the following points should be observed in starting the engine a Ensure that th...

Page 7: ...g bolt b Filter casing drain plug c Filter element d Oil sump Drain plug The change speed arrangement being conventional we do not propose t o describe the method of engaging and changing gear but we give here a plan showing the gear lever positions Fig 4 Fig 4 Overdrive The overdrive is an optional extra To engage overdrive which can only be operated from fourth speed position all that is require...

Page 8: ...pressure appear low then it is possible that the full flow Tecal emit oil filter is choked and in need of renewal Never run the engine if the oil gauge does not register pressure as serious damage may result Chassis Lubrication The various points of the chassis should receive periodical attention as indicated in the Lubrication Chart on Page 11 I t is of vital importance that the rear hubs receive...

Page 9: ...n t e r Gearbox Overdrive Rear Axle Hypoid Steering Box Chassis Lubrication Wheel Hubs Grease Gun O i l Can ESSO Engine Summer W i n t e r Gearbox Overdrive Rear Axle Hypoid Steering Box Chassis Lubrication Wheel Hubs Grease Gun O i l Can Castrol XL Castrolite Castrol XL Castrol Hypoy Castrolrase Heavy Castrol XL Mobiloil A Mobiloil Arctic Mobiloil A Mobilube GX90 Mobilgrease No 4 Mobiloil A Energ...

Page 10: ...ed for decarbonising valve grinding and tappet adjustment The correct tappet clearance is 012 when the valve is closed Hot o r cold Sparking Plugs Sparking plugs should be removed and cleaned in a special plug cleaning machine After cleaning the points should be checked and reset if necessary t o the correct gap of 035 The carburetters should be checked and cleaned See carburetter section Page 19 ...

Page 11: ...es Tyre pressure Wheel base Track Toe In Camber Caster Angle K n g Pin lncl nat on Overall W d t h Overall He ght Overall Length Ground Clearance Turn ngC rcle Clutch Pedal Welght Dry Centre of Grav ty Steer ngratio 87 m m 3 4 ins 111 m m 4 37 ins 3 993 C C 243 cub ins 28 2 H P 6 8 1 Special Head 7 4 I 1 5 3 6 2 4 31 Pints 15 Pints plus 2 Pints for full flow filter 66 Pints 8 Pints with Overdrive ...

Page 12: ...I N N N O PAGE ELEVEN ...

Page 13: ... well smeared with petroleum jelly This will protect the terminals from corrosion which if allowed t o continue unchecked will result in a break in the battery circuit It is important that the battery be firmly secured in its supporting brackets at all times When removing or replacing battery remove clamp bar and bolts away from well otherwise bolts may be bent by the weight of the battery Headlam...

Page 14: ...uid Adjustment Rear Brakes N o attempt should be made t o adjust the brakes with the hand brake on Means for adjustment are available at each rear brake backing plate whereby each shoe can be moved t o the closest proximity o f the drum without actual contact O n the rear brakes there is one adjuster between each pair o f shoes This square ended adjuster can be turned a notch at a time and the eng...

Page 15: ...nts are shown in the lubrication chart See Page 11 Alignment of Front Wheels Alignment of the front wheels is an importmt factor in tyre economy and ease of steering The front wheels should have a toe in of between 0 ins and ins This measurement i s taken between the wheel rims at the front and rear of the wheels at a height equal t o the centre of the wheel t o the ground The rear measurement sho...

Page 16: ...nge front tyres with rear tyres at least every 2 000 miles Tyre and Wheel Balance T o provide smooth riding precise steering and t o avoid high speed steering reaction the tyres are balanced t o predetermined limits By fitting the tyre so that the white spots near the cover bead coincide with the black spots o n the tube a high degree o f balance is achieved If a higher degree of balance is requir...

Page 17: ...1 88 l 3rd Gear 1 27 l 4th Gear 1 OO l Reverse 3 07 l Instructions for lubrication are given on Page 7 The gearbox mainshaft is extended in a housing which allows the use of a short propeller shaft and provides additional mainshaft bearings t o give firmer positioning for the gears Oil capacity 64 pints When Overdrive is fitted optional extra the combined capacity of the gearbox and overdrive is e...

Page 18: ...The 3 gallons reserve are not metered on the gauge From this tank fuel is fed t o the carburetter by an A C mechanical pump mounted o n the L H side o f the engine crank case A priming lever is fitted t o enable the carburetter t o be primed by hand See Fig 2 Page 5 This should be used if the carburetter float chamber has just been replaced after cleaning t o save an excess o f strain on the batte...

Page 19: ...union nut 18 Taper needle 19 Therrno jet 20 Fuel passage 21 Holding up bolt 22 Banjo union bolt 23 Float tickler pin Fig 9 1 Cork Gland Washer K 2 Slow running adjustment screw 3 Throttle spindle 4 Vacuum Ignition Union 5 Holding up bolt 6 N u t cap 7 Jet adjusting screw 8 Fibre washer 9 Jet lower bearing 10 Jet head 11 Brass sealing ring 12 Cork sealing ring 13 Gland spring 14 Main jet 15 Needle ...

Page 20: ... very important that the throttle linkage between the carburetters is not interfered with in any way The carburetters will also give the best results if adjustments are only made when absolutely necessary Maintenance The only attention normally required is the monthly application of a few spots of thin machine oil t o each carburetter suction chamber oil cap This will ensure that the taper needle ...

Page 21: ...re the throttle stop screw and the jet adjustment screw The jet adjustment screws weaken the mixture when screwed up and enrich it when screwed down W h e n these screws are correctly adjusted lifting any of the pistons with a thin blade will slow the engine down If the lifting of the piston makes the engine go faster i t indicates that the carburetter setting is too rich and must therefore be wea...

Page 22: ...2 0848 in 2 0853 in 2 4390 in 2 439 in 1 Connecting Rods The connecting rods are of forged steel with detachable Thinwall bearings Pistons Aluminium alloy with Anodised surface Split skirt type with threecompression rings and one scraper Piston Fitting 0012 ins at top t o 0018 at skirt Piston Rings Gap 021 ins to 015 ins Groove width Compression 0957 ins t o 0967 ins Oil Control l58 t o l59 ins Gr...

Page 23: ...all main big end and camshaft bearings Each main bearing oil feed is supplied from a circular channel cut in the bearing housing which provides a uniform feed of oil between the bearing surfaces Big end bearing lubrication controlled by a special oil feed in the crankshaft also provides for jet lubrication of the cylinder walls while oil from the camshaft front bearing is guided by deflectors fitt...

Page 24: ...tly draining the solution If anti freeze is not used and no other precaution is taken the water should be drained off completely when garaging the car at night during frosty weather There are two drain taps one is at the bottom of the radiator and one on the engine crankcase forward of the distributor When all the water has been drained the engine should be run for not more than one minute at tick...

Page 25: ...PAGE TWENTY FOUR ...

Page 26: ... line blocked Water in petrol Needle valve sticlting Fuel pump faulty Petrol exhausted Air lealts ENGINE R U N S O N WIDE THROTTLE ONLY I CARBURETTER MECHANICAL 1 Slow running adjusting screw Valve sticking incorrectly adjusted IZvalve burnt o r broken Valve spring broken P MECHANICAL and IGNITION ENGINE DOES N O T GIVE CARBURETTER FULL POWER Ignition retarded Timing t o o far advanced Excessive c...

Page 27: ...H 25 162 A T o make any necessary adjustments slacken the bolts and raise o r lower the Dynamo until the desired tension of the belt is obtained then securely lock the Dynamo in position again B O D Y W O R K Dust on the car may be lightly flicked off w i t h a duster but on all other occasions the car must thoroughly washed and dried before a cellulose polish is used Any attempt t o r u b d i r t...

Page 28: ...ft handed direction easing the seat backward o r forward as required T o ensure that the seat is properly located check that the trigger on the adjustment lever is located in one o f the adjustment apertures Spare Wheel Valve Access t o spare wheel valve is obtained through hole in rear o f boot floor T O O L KIT The following tool kit is supplied w i t h the car in c in W h i t w o r t h DIE Span...

Page 29: ... Ltd Kings Road Tyseley Birmingham 11 Brake Servo System Messrs Clayton Dewandre Co Ltd Titanic Works Lincoln Electrical Equipment Joseph Lucas Electrical Ltd Great Hampton Street Birmingham 18 and Dordrecht Road Acton Vale London W 3 Engine O i l Filter Tecalemit Limited Great West Road Brentford Middlesex Instruments S Smith Sons M A Ltd Cricklewood Works London N W 2 Tyres Dunlop Rubber Co Ltd ...

Page 30: ...s fresh air from outside the car and this may be cut off by closing sliding door on L H side of bulkhead Hot air is ducted from the heater t o the Drivers side of the car and is controlled by opening a door underneath the facia A similar door is fitted t o the heater unit itself which when open will permit hot air t o be directed into the vicinity of the passengers feet A t speeds above 30 miles p...

Page 31: ...ances l6 INSTRUMENTS L U B R I C A T I O N Chart Chassrs Lubr catron 22 Rear Axle 23 Gearbox 23 Front Wheels Engrne Lubrication ELECTRICAL E Q U I P M E N T Lamp Bulbs 12 Battery 12 Headlamps 12 Headlamp Alignment 13 Screenwrper 13 E N G I N E Dimensrons 21 Cylinders 21 Crankshaft 21 Crankshaft regrrnding srzes 21 Connectrng rods 21 Pistons 21 Prston Rings 21 Camshaft 21 Valves 21 Valve tlmrng 22 ...

Page 32: ... 28 YELLOW with WHITE 29 YELLOW with GREEN 30 YELLOW wlth PURPLE 31 YELLOW wlth B R O W N 32 YELLOW with BLACK 33 R R O W N 49 PURPLE 50 PURPLE 4 t h R E D 38 BROWN wlth GREEN 39 BROWN with PURPLE 40 S R O W N with RI A r K 51 PURPLE ki hYKLOW 52 PURPLE with BLUE 27 PI IRPI C vrirh W U l T C I S S U E D i355 L M A R C H 1 9 5 5 NUMBERS INDICATE CABLE IDENJlFlCATlON COLOURS SEE KEY ABOVE COPYRIG HT...

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