water pump MAZDA MX-5 1994 User Guide

INDEX INDEX 1. Engine coolant Inspection ................... page E-4 Replacement ................ page E-5 2. Radiator cap Inspection ................... page E-7 3. Radiator Removal / Installation ......... page E-8 Inspection ................... page E-8 4. Thermostat Removal / Installation ......... page E-9 Inspection ................... page E-9 5. Water pump Removal / Installation ....... page E-10 6. Coolant fan motor Inspection ................. page E-12 Replacement .............. page E-12 7. Coolant fan relay Inspection ................. page E-13 Gartner Banana

OUTLINE, TROUBLESHOOTING GUIDE OUTLINE SPECIFICATIONS Cooling system I Water-cooled, forced circulation I - - Engine Item - Water pump BP DOHC Coolant capacity L {US qt, Imp qt) TY ~e Thermostat 6.0 {6.3,5.3} Centrifugal, V-ribbed belt driven Radiator - Coolant fan Opening temperature Water seal TY pe Main: 86.5-89.5 {l 88-1 93) Sub : 83.5-86.5 (1 83-1 87) Unified mechanical seal Wax, two-stage I Full-open temperature "C ("F) 100 {212} 1 Full-open lift mm {in} Main: 8.0 (0.31) min. Sub : 1.5 (0.06) min. TY pe Corrugated fin Cap valve opening pressure kPa {kgf/cm2, psi} 1 TROUBLESHOOTING GUIDE Problem Electric 320 {l 2.6) 5 120-1 2 below 7.7 Type 45UOEX-003 Blade Motor Coolant level insufficient 1 Add Outer diameter mm {in) Number Capacity W-V Current A Possible Cause Coolant leakage 1 Repair Remedy Radiator fins clogged ( Clean Radiator cap malfunction 1 Replace Coolant fan malfunction 1 Replace Thermostat malfunction 1 Replace Water passage clogged 1 Clean Water pump malfunction Impurities in coolant Replace Replace Gartner Banana

WATER PUMP WATER PUMP REMOVAL I INSTALLATION 1. Disconnect the negative battery cable. 2. Drain the engine coolant. (Refer to page E-5 for WARNING and procedure) 3. Remove in the order shown in the figure, referring to Removal Note. 4. Install in the reverse order of removal. 1. Timing belt 4. Water pump Service . . . . . . . . . . . . . . . . . . . . . Section B Inspect for cracks, damaged mounting sur- 2. PIS oil pump face, bearing condition, and leakage. Removal Note . . . . . . . . . . . . . . page E-1 1 If the water pump is damage, replace it. 3. Water hose Do not repair it. 5. Water inlet pipe Gartner Banana

WATER PUMP Stens After Installation 1. connect the neaative batterv cable. Removal Note PIS oil pump 1. Remove the PIS oil pump with the hoses still connected. 2. Position the pump away from the water pump and affix it with wire. 2. Fill the radiator kith coolant: (Refer to page E-6 for WARNING and procedure.) Gartner Banana

EXHAUST GAS RECIRCULATION (EGR) EGR CONTROL VALVE I EGR CONTROL VALVE Inspection 1. Start the engine and let it idle. 2. Connect a vacuum pump as shown and apply vacuum. 3. Verify that the engine runs roughly or stalls at more than the specified vacuum. Specification: 5.4--12.0 kPa (40-90 mmHg, 1.6-3.5 inHg) 4. If not as specified, replace the EGR control valve. Replacement Plug the water hoses after disconnecting them. 1. Remove the EGR control valve in the sequence shown below. (1 ) EGR hoses (2) Vacuum hose (3) EGR function sensor connector (4) EGR control valve and gasket 2. Install a new gasket, and then install the EGR control valve in the reverse order of removal. Gartner Banana

CONVERTIBLE TOP s 6. Place the link assembly onto the top fabric. 7. Install the top fabric to the bows, beginning from the rear bow. 8. Align the center of the retainer and the V notch in the top fabric, and roll the top fabric over the bow u retainer. 9. Hang the end of the top fabric on the bow retainer. 10. Clamp the top fabric to the bow with protected water pump pliers. Pull the top fabric by hand to verify that it is held securely. 11. Affix the top fabric to the rear bow with the Velcro. REAR BOW SEC. A-A I pg TOP FABRIC I CENTER BOW 12. Set the convertible top upright. 13. Rivet the cables to the front of the link assembly. Gartner Banana

TECHNICAL DATA D. LUBRICATION SYSTEM - Engine ltem BP DOHC - -. Lubrication system Force-fed type E. COOLING SYSTEM Trochoid gear 344-41 I3.5--4.5,s-31 9&l96 {I .&2.0, 15--28) 295-392 {3.0-4.0,43-56) 0.02-0.1 8 {0.000&0.0070) 0.20 {0.0079) 0.09-0.18 (0.0036-0.0070) 0.20 {0.0079) 0.03-0.1 2 {0.0012-0.0047) 0.14 (0.0055) TY pe Relief pressure kPa {kgf/cm2, psi) Oil pressure kPa {kgf/cm2, psi) Inner rotor tooth tip to outer rotor clearance mm {in) Outer rotor to body clearance mm {in) Side clearance mm {in) Water seal type I Unified mechanical seal Thermostat 1,000 rpm 3,000 rpm Standard Maximum Standard Maximum Standard Maximum Oil filter Engine ltem - - Cooling system . . Impeller diameter mm {in) Number of impeller blades Type Relief pressure differential kPa {kgf/cm2, psi) BP DOHC Water-cooled, forced circulation - 75 i2.95) 6 Full-flow, paper element 74-1 17 {0.&1.2, 12-1 7) TY pe . ., . . . - Radiator I Water pump Wax, two-stage v. . . Full-open temperature "c {OF) Full-open lift mm {in) Engine oil TVD~ O~enina tem~erature "C con I Sub: 83.5-86.5 U83-187). Main: 86.5-89.5 (1 88-1 931 100 (21 2) Sub: 1.5 (0.06) min., Main: 8.0 (0.31) min. -. . - . . Cooling circuit checking pressure kPa {kgflcmz, psi) I 103 {I .05, 14.9) I Centrifugal, V-ribbed belt driven TY pe I Coolant fan I 4.0 (4.2, 3.5) 3.6 {3.8,3.2) 3.75 (4.0, 3.3) API Service SG, SH (ECII) ILSAC Capacity Corrugated fin viscosity Above -25°C (-1 3°F) SAE 1 OW-30 number Below 0°C {3Z°F) SAE 5W-30 Total (dry engine) L {US qt, Imp qt) Oil replacement L {US qt, Imp qt) Oil and oil filter replacement L {US qt, Imp qtl Cap valve o~enina pressure kPa {krrf/cm2, psi} 1 73.6--102 {0.75--1.05, 10.7-14.91 Capacity W-V I 120-1 2 Current A 1 below 7.7 Engine oil Type Number of blades Outer diameter mm {in) Coolant Capacity L {US qt, Imp qt) I 6.0 {6.3,5.3) Electric 5 320 (1 2.61 Gartner Banana

TD TECHNICAL DATA Idle speed rpm 1 800-900 (850 2 50) [MT]', 750-850 (800 f 50) [ATJ' lanition timina BTDC I 9"-11' (10' f 1")' u' F. FUEL AND EMISSION CONTROL SYSTEMS - Engine ltem Item 1 Throat diameter mm {in) 1 55 (2.2) 1 Antifreeze solution BP DOHC Specification 1 Throttle body Fuel pump TY pe I Impeller (in-tank) Coolant protection Above -1 6°C (3°F) Above -26°C (-15°F) Above -40°C {-40°n Tv~e -. Output pressure kPa (kgf/cm2, psi) I 294-437 {3.0--6.5,43--92) Fuel filter Specific gravity at 20°C {WF) 1.054 1.066 1.078 Volume percentage % Horizontal draft Water 65 55 45 -. . - Regulating pressure kPa {kgf/cm2, psi) I 280-289 I2.85--2.95, 40.141.9) Fuel iniector Coolant 35 45 55 TY pe IAC valve Solenoid resistance n 1 10.7-1 2.3 (at 20°C (68°F)) Low-pressure side TYP~ Type of drive Resistance n Purge solenoid valve Solenoid resistance n 1 23-27 (at 20°C (68°F)) I Nylon element Pressure regulator TY pe High-ohmic Voltage 13.8 (at 20°C (68"FI) Engine coolant temperature sensor 7 20°C {68"F) I 2.21 -2.69 Resistance kn I 80°C (1 76OF} I 0.287-0.349 High-pressure side Diaphragm i/ Crankshaft position sensor Air valve Openin~l temperature OC {OF) I Below 45 (1 131 Paper element Twe 1 Fuel tank I Hall effect . . . . . . . Capacity L {US gal, Imp gal) I 48 {12.7, 10.5) Air cleaner housing Element type Free play mm (in) I 1-3 {0.039--0.118) I Fuel Oil permeated Specification Accelerator cable Unleaded regular (RON 87 or higher) J +....with system selector (49 B019 9AO) test switch at SELF TEST Gartner Banana

1400 -2 * OIL PUMP 8 FILTER ;ASK&'' ,OIL STRAINER 4OSE , WATER-OIL COOL Z IN, :LAMP ,WATER HOSE :ARTRIDOC,OIL FILTE !OXYP ROKI Gartner Banana

I SCREW ,HOTOR ELEL ilI0/ FAN I PUMP SET, WATER HOSE,WATER BY-PASS RING,lO'-WATER BUMP GASKET, .JE.TER PUMP BOS5,W.PUMP PULLEY PULLEY, WA ICR PUMP CAlSOIiIC (AT) GASKEP,W.PUHP INLET HOti ASBESTOS Gartner Banana