Service Manual Datsun Truck Model
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tO t e DATSUN TRUCK MODEL 320 SfRVICE MANUAL E c f i 1 t lJ NISSAN l A t y NI55AN MOTOR CO LTD OTEMACHI BLDG OTEMACHI CHIYODA KU TOKYO JAPAN CAlLI ADDRISS I NISMO TOKTO HONU I 211 5281 Book Sale MODEL 1IO U U NEW MODEL 1IO I i INTRODUCTION ThIS manual has been comphes for purpose of asslstmg DATSUN dIstnbutors and dealers for effectIve serVIce and mamtenance of the Model P L 320 U Each assembly of the major components IS descnbed 10 detaIl In addItIOn comprehenSIve mstructlOns are gIven for com pIete dlsmanthng assembImg and mspectlOn of these assembltes l It IS emphasIsed that only genuine DATSUN Spare Parts should be used as replacements cfi4 CONTENTS Page SPEClFICA TION 1 6 ENGINE 1 General SpecIftcatlOns 1 COOLING SYSTEM 3 Lubncatlon 10 ServIce OperatIOns wIth EngIne In PosItion 15 Rocker Mechamsm 20 Removmg RefittIng 34 OperatIOn WIth the Engme Removed 35 FUEL SYSTEM 38 The GasolIne Tank 39 Fuel Strainer 43 Fuel Pump 44 Adjustment and Inspection of EngIne 49 Carburetor 54 q it0 t BRAKER POINT AND IGNITION TIMING ADJUSTMENT 59 1 Dlstnbutor 59 AdjustIng the Igmtlon TImIng 61 CheckIng the Spark Plugs 65 CLUTCH 66 U1I JJ Clutch 67 of Clutch Control 68 Descnptlon l TRANSMISSION 76 TransmIssIOn 77 DIsassemblIng the Case 81 rt the TransmISSIOn 87 i Assembhng 1 Selector Inner Operatmg Lever Cross Shaft 91 PROPELLER SHAFT UNIVERSAL JOINT 93 94 Propeller Shaft Umversal jomts STEERING 97 FRONT AXLE 106 t Front Axle 106 l 114 Settmg of TenSIon Rex Page REAR AXLE 117 Rear Axle 118 AssemblIng Adjustment 122 BRAKE 138 IGNIfI0N SYSFEM 147 ELECTRICAL SYSTEM 150 Starter Motor 164 Battery 171 u c t v SPECIFICA TIONS For Model 320 U VEHICLE DIMENSIONS Length overall approx 4 185 mm 164 8 m WIdth overall approx 1 515 mm 59 6 m HeIght overall approx 1 50S mm 59 3 m Wheelbase 2 470 mm 97 2 In Tread Front I 170 mm 46 1 In Rear 1 187 mm 46 7 m Mm road clearance 177 mm 7 0 In CARGO SPACE DIMENSIONS Intenor length I 850 mm 72 8 m lntenor wIdth 1 427 mm 56 2 In lntenor height 406 mm 16 0 In r WEIGHTS Dry vehIcle weIght empty 945 kg 2 080 lbs 1 Seating capacIty 2 Max cargo weIght Model 320 U 225 kg 500 lbs Model 320 UN 500 kg 1 000 lbs Model 320 UP 910 kg 2 000 lbs PERFORMANCE J Max speed 120 KPH 75 MPH Grade ablhty Sm 6 38 Mm turnmg radIUs 5 2 m 17 ft t ENGINE Name Model E 1 ir f Kmd Gasohne engme Cyhnder No and arrdngement 4 cvls m lme Cycle 4 cycle valve arrangement Valve m head mm 2 875 m x 2 796 m Bore x Stroke 73x7l 1 m Total piston dIsplacement 189 cc 72 5 cu CompressIOn ratio 8 2 60 HP at 5 000 r m SAE Max power P at r m Max torque 9 3 kg m 673ft lb 3 600 p FInng order 1 3 4 2 r Valve tlmmg Inlet opemng 14 deg B T C Inlet closmg 50 deg A B C Exhaust opemng 52 deg B B C Exhaust closmg 12 deg A T C Valve clearance Both m1et and exhaust Hot 0 35 mm 0 014 m IGNITION SYSTEM 19mtlon tlmmg 10 deg B T C 600 rpm Spark plugs NGK Model B 6E 14 mm Spark plug gap 0 7 0 8 mm FUEL SYSTEM Carburetor Pnmary Secondary Throttle valve dla 28 mm 30mm Ventlro dla 21 8 mm 25 14 7 mm Mam Jet dla 98 115 t Slow Jet dla 48 40 PQwer Jet dla 4Q Slo economlzer 145 Slow aIr FIrst 100 Slow atr Second 220 Float level 19mm Fuel tanJlcapaclty 35 htres 9 3 U S gal Llj RICA TION SYSTEM OIl pan capacity 3 1 htres 0 86 U S gal COOLING SYSTEM t Coolmg water capacIty 5 4 htres 1 4 U S gal r BATTERY Type CF3 12K 14M2 M39 12 Voltage 12 volts 2 SMS Capacity 40 amp hr 20 hr 50 amp hr 20 hr Termmal grounded posltlve sIde GENERATOR J Capacity 0 2 KW Voltage current regulator Carbon ptie type 2 STARTER MOTOR and Voltage power 12 volts 1 4 hp CLUTCH Type Dry smgle plate type Operating system Hydrauhc Master cyhnder mSlde dla 15 85 mm 5 8 m Operatmg cy1mder mSlde dza 19 05mm 3 410 TRANSMISSION Type Four forward speeds and one reverse Synchromesh on 2nd 3rd and top gears Gear ratIOs For 320U 320 UN For 320UP 1st speed 3 94 4 94 2nd speed 2 40 3 01 3rcl speed 1 49 1 73 4th speed 1 00 1 00 Reverse 5 16 6 46 all capacIty 2 0 lures 0 53 U S gal REAR AXLE Type Semi floatIng Gear ratIo 4 875 39T 8T for 320 U 320 UN 5 143 36T 7T for 320 UP for other 320 senes as potIonal all capacIty O 85 htres 0 22 U S gal STEERING SYSTEM Gear mechamsm Warm and roller Gear ratIO 17 3 I FRONT AXLE Toe m 2 3 mm Camber 1 30 mm deg c Caster 4 deg 15 min 6 Kmg pm mchnatIon deg BRAKE SYSTEM Type Foot brake Front Hydrauhc umservo type Rear Hydrauhc duo servo type Hand brake Mechanical rear wheels braked 3 Brake drum dla front and rear 254 rom 10 10 Master cylmder bore 19 05 mm 0 77 10 Wheel cyhnder bore Front wheels 19 05 mm 0 77 lD Rear wheels 19 05 mm 0 77 lD SUSPENSWN SYSTEM Front suspensIOn Wishbone type Independent suspension Front spnngs TorsIOn bar spnng DimensIOn Ola x Length 20 5 x 604 5 mm Rear spnngs Parallel semlelltptic leaf spnng 111lckness number 7 mm x 2 for 320 U 6 mm x 1 6mm 4 for 320 UN 12 mm 1 6mm for 320 UP With 5 mm 2 helper rubber 12 mm 211 Shock absorbers Front smgle action Rear smgle action TIRES Model Front Rear 320 U 5 60 14 6PL T 24 lb 5 60 14 6PL T 30 lb 320 UN 5 50 14 6PL T 22 lb 5 50 i4 6PL T 36 lb 320 UP 6 00 14 6PL T 22 lb 6 00 14 8PL T 60 lb I 4 FOT RUNCH SEDAN U320 Double Seat 2 DOOR ST WAGON V320 N320 Single Seat VEHICLE DIMENSIONS U320 V320 N320 Length overall 4 285 mm 4 155 mm 4 155 mm approx 168 7 m 163 6 m 163 6 m WIdth overall 1 497 mm 1 497 mm 1 497 mm approx 58 9 10 58 9 m 58 9 m HeIght overall 1 520 mm 1 515 mm 1 530 mm approx 59 8 m 59 6 m 60 3 m Wheel base 2 470 mm 2 470 mm 2 470 mm 97 2 10 97 2 m 97 2 m CARGO SPACE DIMENSIONS Intenor length 880 mm 2 1 555 mm 1 560 mm 34 6 2 m 61 m 61 6 m F Intenor wIdth 1 245 mm 5940 mm 1 254 mm 49 m 1 180 10 49 4 m t Intenor heIght 420 mm 905mm 430 mm 16 5 m 35 6 m 16 9 m WEIGHTS VehIcle weIght 1 000 kg 1 020 kg 955 kg 2 200 lbs 2 255 lbs 2 100 lbs Seatmg and loadmg capacIty 5 400 kg 2 SOO kg 2 500 kg 880 lbs 1 100 Ibs 1 100 1bs 5 300 kg 660 lbs TRANSMISSION Gear tram HIgh gear 4 forward 1 reverse Gear ratIO Low 3 94 2nd 2 40 3rd 1 49 Low 3 94 2nd 2 40 hIgh 1 00 reverse 5 16 3rd 1 49 4th 1 000 Reverse 5 16 5 FINAL GEAR Gear ratIO 5 143 36T 7T 4 875 39T 8T SUSPENSION Front Wishbone type Independent suspensIOn wIth torsIOn bar Rear thickness and number of spnng leaves 6 mm 4 6 mm I 12 mm I 12 mm 1 Supplemental Sp 108 mm 80 mm Shock absorbers Front Single acting Single action Rear Single acting Single action Optional TIRE SIZE AND PRESSURE Front 5 50 l4 6PL T 22 lb 5 50 14 6PL Rear 5 50 14 6PL T 46 lb 5 50 14 6PL 1 PERFORMANCE iT Max speed 110 KPH 70 MPH 120 KPH 74 6 MPH Grade ability 0 30 0 30 Min turning radIus 5 2 m 17 ft 5 2 m 17 ft NOTE Other speclftcatlOns are same as Model 320 U 6 ENGINE I c l 1 I I ENGINE and IS overhead valves The engme IS of monobloc construction fitted with operated by rockers and push rods from the camshaft 011 seals are fItted to the valves Three steel backed beanngs support the camshaft whIch IS cham dnven camshatt each The OIl pump and dlstnbutor are dnven from the component havmg Its own dnve shaft a slotted 011 The pIstons are each htted with two compressIOn rmgs and fitted to the connect control nng Beanngs of the thm shell preformed type are and the A counter blanced crankshaft IS fitted 109 rod bIg ends to malO beanngs The end thrust on this component IS taken by specIal washers at the center malO beanng The centnfugal water pump and coolmg fan are dnven by the dynamo belt GENERAL SPECIFICATIONS No of Cyhnder 4 Bore 73 025 mm 2 875 m Stroke 71 mm 2 796 m Volume 1 189 cc at 5000 r m Max brake horse power 60 HP p Torque 9 3 kg m at 3600 r p m Flnngorder 1 3 4 2 valve Valve arrangement Overhead push rod type lbs 11 5 cm CompressIOn pressure 163 per sq m kg at 350 r p m CompressIOn ratio 8 2 1 1 1 side Right Engine Left side Engine 2 COOLING SYSTEM An effIcIent coohng system IS of major Importance to ensure the satisfactory and therefore attention to runmng of the engIne It IS necessary to pay patlcular Its maIntance Description wIth The coohng system IS maIntaIned by water pump CIrculation combIned an effIcient fan cooled radIator and thermostat The system IS pressunsed and the rehef valve Incorporated 10 the radIator fIller cap controls the pressure at approxImately O 4 kg per sq cm Do not remove the ftller cap If the temperature of the coolant IS above IXJhng poInt or If the engIne IS runmng ToppIng up should only be requIred occasIOnally to re cold and place water lost through the overflow pIpe Top up when the engIne IS If pOSSIble use clean soft water li j l Fig 1 Rmliator when the FIll to wIthIn 1 2 of the bottom of the fIller plug well OverfIlhng The engIne IS cold may cause water to flow through the overflow pIpe capacIty of the system IS approxImately 5 2 htres 3 Therm ostat In order to ensure maxImum effIcIency It IS essential to keep the engine operating temperatures within certain hmlts To assist this a bellows type thermostat IS fttted being located In the water outlet at the front of the cyhnder head The deVIce consIsts of metalhc bellows fIlled WIth a volatile hqUled whIch controls a mushroom valve When the engine IS cold thIS valve IS closed and on starting the engine the flow of water to the radiator IS temporanly re stncted Due to thiS the temperature of the water In the cyhnder head and cyhnder Jackets wIll qUIckly nse thus ensunng rapid warnllng up The heat so generated will gradually expand the bellows so opening the valve and ultlmatelly permitting a full flow of water to the radIator The thermostat Itself IS detachable therefore should the occasIOn anse It r l can be removed from ItS housmg and the hose reconnected to aVOId up the laYing t f car Should the thermostat be tight it