Mazda RX7. Manual - part 27

 

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Mazda RX7. Manual - part 27

 

 

1.1L ROTARY

Article Text (p. 22)

1983 Mazda RX7

For www.iluvmyrx7.com    

Copyright © 1998 Mitchell Repair Information Company, LLC

Sunday, August 26, 2001  04:57PM

Fig. 28:  Mazda RX7 Engine Oiling System

         OIL PUMP

NOTE:    Oil pump is mounted on the front engine housing and must be
         overhauled with front engine cover removed.

         1) Remove front engine cover. Check oil pump drive chain
slack by pressing finger against chain and measuring slack. If
measurement exceeds .47" (12 mm), replace drive chain. See Fig. 29.

Fig. 29:  Measuring Oil Pump Drive Chain Slack
Replace chain if slack exceeds limit.

         2) Disassemble oil pump in following order: Remove snap ring,
rear outer rotor, rear inner rotor, key, and middle plate. Remove
front inner rotor, key shaft, spring pin, and front outer rotor. See
Fig. 30.

1.1L ROTARY

Article Text (p. 23)

1983 Mazda RX7

For www.iluvmyrx7.com    

Copyright © 1998 Mitchell Repair Information Company, LLC

Sunday, August 26, 2001  04:57PM

Fig. 30:  Exploded View of Oil Pump Assembly

         3) Insert a feeler gauge between lobes of inner and outer
rotors and check clearance. If beyond .006" (.15 mm), replace both
rotors.
         4) Check clearance between outer rotor and pump housing with
a feeler gauge. If clearance exceeds .012" (.30 mm), replace rotors
and housing.
         5) Place straightedge across pump mounting surface, and check
rotor end play with a feeler gauge. If beyond .006" (.15 mm), replace
pump body or rotors.
         6) To assembly oil pump, reverse disassembly procedure.
Install oil pump and tighten bolts. Install sprockets and chain as
previously outlined. See Eccentric Shaft End Play Adjustment.

         METERING OIL PUMP

         1) Check clearance between metering pump lever and washer.
See Fig. 31. Clearance must be no more than .04" (1.0 mm).

Fig. 31:  Adjusting Metering Pump Control Rod
Adjust clearance by changing washers.

         2) To check oil discharge, detach connecting rod. Disconnect
oil lines at carburetor. Start engine and adjust idle to 2000 RPM.
Once oil flow from hoses becomes steady, measure volume discharged.
Pump should discharge .07-.08 oz. (2.0-2.4 cc) in 6 minutes.

CAUTION: Carburetor will not be receiving oil during test. Add small
         amount of clean oil to carburetor to provide proper
         lubrication during testing.

1.1L ROTARY

Article Text (p. 24)

1983 Mazda RX7

For www.iluvmyrx7.com    

Copyright © 1998 Mitchell Repair Information Company, LLC

Sunday, August 26, 2001  04:57PM

         3) To adjust oil metering pump, turn the adjusting screw
clockwise to increase flow or counterclockwise to decrease flow. One
completer turn will change oil discharge flow by .007-.011" oz. (.2-.3
cc) for 6 minutes of operation.
         4) Ensure lock nut on adjustment screw is tight. Recheck
metering oil pump discharge rate.

         OIL COOLER

         Inspection
         Check the oil cooler for damage, cracks, or leaks. Replace
the oil cooler if defective.

         Removal & Installation
         1) Remove water hoses installed on the inlet and outlet sides
of cooler. Remove oil pipe and sealing washer. Remove oil cooler and
filter housing as an assembly.
         2) Remove "O" rings. Do not disassemble. Replace as an
assembly if necessary. To install, reverse removal procedure. Use new
filter, "O" rings, and sealing washer. Add engine oil and coolant.
Start engine and check for leaks.

         ENGINE COOLING

         THERMOSTAT

         Thermostat is a wax pellet type which starts to open at 180

ø

F

(82

ø

C) and fully opens at 203

ø

F (95

ø

C).

         PRESSURE CAP

         The radiator pressure cap is rated at 13 psi (.9 kg/cm

ý

).

         WATER PUMP

         Removal
         1) Drain cooling system. Remove air cleaner, water
temperature switch connector, air conditioner drive belt, and air pump
drive belt.
         2) Remove alternator, cooling fan, and drive belts. Remove
air conditioning pulley (if equipped). Disconnect radiator hoses and
remove water pump.

         Disassembly
         1) Press the pulley boss off of the pump shaft. Remove the
snap ring.
         2) Supporting the pump body, apply pressure to the rear end
of the shaft to press the shaft, spacer, and bearing assembly out
through the front of the pump body. See Fig. 32.
         3) Remove impeller and seal assembly from the pump body.
Press bearings and spacer from the shaft.

1.1L ROTARY

Article Text (p. 25)

1983 Mazda RX7

For www.iluvmyrx7.com    

Copyright © 1998 Mitchell Repair Information Company, LLC

Sunday, August 26, 2001  04:57PM

Fig. 32:  Exploded View of Water Pump

         Reassembly
         1) Install stop ring and dust seal on the shaft. Drive baffle
plate onto the taper of the shaft.
         2) Press the rear bearing onto the shaft with sealed side
rearward until it contacts the stop ring. Press shaft and bearing
assembly into the pump body.
         3) Place spacer on the shaft fill with grease. Install front
bearing (sealed side forward) until the snap ring can be installed.
Press pulley boss onto pump shaft.
         4) Install the seal assembly into the body. Press impeller
onto the shaft until it is flush with the end of the shaft.

         Installation
         To install, reverse removal procedure. Adjust drive belt
tension and refill cooling system.

         TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS TABLE

ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

Application                                   Ft. Lbs. (N.m)

Eccentric Shaft Pulley  ....................  72-87 (98-118)
Flywheel Lock Nut  ......................  289-362 (393-492)
Intake Manifold  ............................  14-19 (19-26)
Oil Pump Sprocket  ..........................  23-34 (32-47)
Pressure Plate  .............................  13-20 (18-27)
Water Pump  .................................  13-20 (18-27)

ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

         ENGINE SPECIFICATIONS

         GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS TABLE

ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

Displacement

 

 

 

 

 

 

 

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