light MAZDA MX-5 1994 User Guide

ON-VEHICLE MAINTENANCE B Steps After Installation 1. Connect the neaative batterv cable. Oil seal 1. Cut the oil seal lip with a razor knife. 2. Remove the oil seal with a screwdriver protected with a rag. Installation Note Oil seal 1. Apply a small amount of clean engine oil to the lip of a new oil seal. 2. Push the oil seal slightly in by hand. 3. Tap the oil seal in evenly with a pipe and a hammer until it is flush with the edge of the oil pump body. Note Oil seal outer diameter: 50.5mm (1.99 in} Oil seal inner diameter: 36.5mm (1.44 in} Timing belt pulley 1. Install the timing belt pulley. 2. Install the pulley woodruff key with the tapered side to- ward the oil pump body. 2. Start the enginsand check, and if necessary, adjust the ignition timing. 3. Connect the negative battery cable. 4. Start the engine and check follows: (1) Engine coolant leakage (2) Ignition timing (Refer to page B-9.) 5. Recheck the engine coolant levels. Gartner Banana

ON-VEHICLE MAINTENANCE Installation Note Oil seal 1. Apply a small amount of clean engine oil to w new oil seal. 2. Push the oil seal slightly in by hand. 3. Using a pipe and hammer, tap the oil seal in it is flush with the edge of the rear cover. Note Oil seal outer diameter: 100mm (3.94 in} Oil seal inner diameter: 83mm (3.27 in} 45UOBX-049 Steps After Installation 1. Connect the negative battery cable. 2. Start the engine and perform engine adjustments as necessary. the lip of a evenly until Gartner Banana

ASSEMBLY B CYLINDER BLOCK (EXTERNAL PARTS) Torque Specifications 7.9-10.7 Nm (80-110 kgfwn, 70--95.4 in4bf) OIL SEAL. NEW 7.9-10.7 Nm (80-110 kgfcm, 7045.4 Indbf) Nm (kgf m, ftlbf) 05UOBX-198 Rear Cover 1. Apply a small amount of clean engine oil to the lip of a new oil seal. 2. Push the oil seal slightly in by hand. 3. Using a pipe, press the oil seal in evenly until it is flush with the edge of the rear cover. L Note Oil seal outer diameter: 100mm (3.94 in} Oil seal inner diameter: 83mm (3.27 in} Gartner Banana

ASSEMBLY 4. Apply silicone sealant to the shaded area shown in the figure. 5. Install the rear cover Tightening torque: 7.9-1 0.7 N.m (80-1 10 kgfem, 70-95.4 in-lbf) Oil Pump 1. Apply a small amount of clean engine oil to the lip of a new oil seal. 2. Push the oil seal slightly in by hand. 3. Using a pipe, press the oil seal in evenly until it is flush with the edge of the oil pump body. U' Note Oil seal outer diameter: 50.5mm (1.99 in} Oil seal inner diameter: 36.5mm (1.44 in) 4. Install the oil pump and a new gasket. Tightening torque: 19-25 N.m (1 -9-2.6 kgf-m, 14--18 ft-lbf) 5. Cut away the portion of the gasket that projects from the body toward the oil pan side. Gartner Banana

B ASSEMBLY @ @ GREATER THAN @ @ 1. Assemble the SST so that depth L is as specified. Depth L: 18.3-18.9mm (0.721-0.744in) 2. Slide the valve seal onto the valve guide. 3. Set the SST against the valve seal. 4. Press the valve seal in until the SST contacts the cylin- der head. Valve and Valve Spring 1. lnstall the lower spring seat. 2. Install the valve. 3. lnstall the valve spring with the closer pitch toward the cylinder head. 4. lnstall the upper spring seat. 5. Compress the valve spring with the SST, and install the valve keepers. 6. Remove the SST. 7. Tap the end of the valve stem lightly two or three times with a plastic hammer to verify that the keepers are all fully seated. Gartner Banana

ASSEMBLY Camshaft Note The rear end of exhaust camshaft is grooved for the L/ crankshaft position sensor drive. 1. Apply clean engine oil to the camshaft journals and bear- ings. 2. Install the camshaft in position. CRANKSHAFT POSITION SENSOR DRIVE GROOVE 45UOBX-151 3. Apply silicone sealant to the shaded areas shown in the figure. Do not let any sealant get on the journal surfaces. 4. Install the camshaft caps according to the cap number and arrow mark. 5. Install the camshaft cap bolts, and tighten them in two or three steps in the order shown. Tightening torque: Il.3--14.2 N.m {ll5-l4S kgfem, 100-125 in4bf) ij 6. Apply a small amount of clean engine oil to the lip of a new camshaft oil seal. 7. Push the oil seal slightly in by hand. 8. Using a pipe and hammer, tap the oil seal in evenly until it is flush with the edge of the camshaft cap. Note Oil seal outer diameter: 48mm (1.89 in) Oil seal inner diameter: 34mm (1.34 in) Camshaft Pulley 1. Turn the camshafts until the camshaft dowel pins face straight up. 2. lnstall the camshaft pulleys with the I mark (intake side) or the E mark (exhaust side) straight up. Gartner Banana

OIL PAN D RIGHT . . LEFT Removal Note Engine mount nut 1. Loosen the oil pan mounting bolts. 2. Remove the engine mounting nuts. 3. Lift the engine slightly with a hoist. Crossmember installation bolt and nut 1. Support the crossmember with a transmission jack. 2. Remove the crossmember installation bolts and nuts. 3. Separate the steering intermediate shaft from the pinion shaft. 4. Lower the crossmember until the clearance between the oil pan and the steering gear housing exceeds approx. 100mm (3.94 in). Oil pan 1. Remove the oil pan mounting bolts. Caution Pry tools can easily scratch the cylinder block and the oil pan contact surfaces. Prying off the oild pan can also easily bend the oil pan flange. Refer to the following instructions before remov- ing the oil pan. 2. Insert a screwdriver only at the points shown in the fig- ure. 3. Remove the oil pan. Oil baffle 1. Insert a screwdriver between the cylinder block and the oil baffle to separate them. 2. Remove the oil baffle. Installation Note Oil baffle 1. Remove all foreign material from the contact surfaces. 2. Apply a continuous bead of silicone sealant to the oil baffle along the inside of the bolt holes, and install within five minutes. Gartner Banana

OIL PUMP D Apply a small amount of clean engine oil to the lip of a new oil seal. Push the oil seal slightly in by hand. Using a pipe, press the oil seal in evenly until it is flush with the edge of the oil pump body. Note Oil seal outer diameter: 50.5mm {I .99 in) Oil seal inner diameter: 36.5mm (1.44 in} I I Assembly Note Oil seal Gartner Banana

PURGE SOLENOID VALVE 7* AlC RELAY COOLANT FAN RELAY CONDENSER FAN RELAY STARTER STEERING PRESSURE SENSOR AIR CONDITIONING SENSOR ... CHECK VALVE FUEL-FILTER (HIGH-PRESSURE SIDE) / CRANKSHAFT POSITION SENSOR HEATED OXYGEN SENSOR ltT=I THREE-WAY CATALYST - REAR WINDOW DEFROSTER SWITCH COMBINATION SrmCH BLOWER SWlTCH STOPLIGHT SWITCH (MT) CLUTCH SWITCH (MT) - NEUTRALSWrrCH (MT) TEN TERMINAL PARWEUTRAL SWITCH (AT) VEHICLE SPEED SENSOR ENGINE COOLAMTEMPERATURE SENSOR EGR SOLENOID VALVE WEM) EGR SOLENOID VALVE (VACUUM) - w TO PCME Gartner Banana

Neutral swltch (MT) 7 PCV valve Powertrain control mod- ule (engine) (PCME) Purge solenoid valve Resonance chamber Steering pressure sen- Stoplight swltch I Throttle posltion sensor r [Two-way check valve Function jetects amount of intake air; sends signal to powertrain :ontrol module (engine) Li~ht illuminates when input device malfunctions - Light flashes to indicate trouble code number of input and output devices Detects in-gear condition; sends signal to powertrain :ontrol module (engine) - Controls blow by aas amount introduced into engine Detects the followlng: 1. A/C operation 2. Airlfuel ratio (Oxygen concentration) 3. Barometric absolute pressure 4. Braking signal 5. Cranking signal 6. EIL operation 7. Engine coolant temperature 8. Engine speed 9. In-gear condition 10. lntake air amount 11, lntake air temperature 12. No.1 piston TDC 13. PIS operation 14. Initial set signal 15. Throttle valve opening angle Controls operatlon of the followlng: 1. AIC (Cut off) 2. Fail-safe function 3. Fuel injection system 4. ldle speed control 5. Ignition timing control system 6. Monitor function 7. Purge control system 8. Lockup control svstem Controls vacuum to pressure regulator -- Adjusts fuel pressure supplied to fuel injectors Controls evaporative fumes from canister to intake man- ifold -- lm~roves mid-ranae torque characteristics -. Detects PIS operation; sends signal to powertrain con- trol module (engine) -- Detects braking operation (deceleration); sends signal to powertrain control module (engine) Reduces HC, CO, and NOx by chemical reaction Controls pressurein fuel tank Controls intake air quantity Detects position of the throttle valve closed throttle posi- tion; sends signal to powertrain control module (engine) Detects the throttle valve opening at a preset angle; sends si~nal to powertrain control module (engine) controls pressure in fuel tank Remark lntake air temperature sensor and fuel pump switch included Use Vref (5 volt) as power source ' Data link connector terminal TEN ' Data link connector terminal TEN Switch ON when in neutral 1, Air conditioning sesnor 2. Heated oxygen sensor 3. Barometric absolute pressure sensor 4. Stoplight switch 5. Ignition switch (START position) 6. Coolant fan relay Light and turn relay Blower switch 7. Engine coolant temperature sensor 8. Crankshaft position sensor (SGT-signal) 9. Neutral and dutch switches (MT) Parklneutral switch (AT) 10. Mass airflow sensor 11, lntake air temperature sensor 12. Crankshaft position sensor (SGC-signal) 13. Steering pressure switch 14. Data link connector 15. Throttle position sensor 1. NC relay 2. Self-diagnosis checker and MIL 3. Fuel injector 4. IAC valve 5. Igniter 6. Monitor lamp (Self-diagnosis checker) 7. Purge solenoid valve 8. Powertrain control module (transmission) (AT) D Controlled by duty signal from powertrain control module (engine) D PIS: ON when steering wheel turned Monolith type D Integrated throttle position sensor, Idle air control valve, and dashpol Gartner Banana