Chevrolet Metro Parts

Chevrolet Metro Parts Questions & Answers

• Distributor Assembly
  91172595
  Q: How to service and repair the distributor on Chevrolet Metro?

  A: In order to service and repair the Distributor, one should proceed and check out the resistance of camshaft position (CMP) sensor between its two terminals in the Distributor connector with the aid of the digital multimeter (J 39200); replace the cmp sensor if the resistance is outside the will specify range of 185-325 ohms. Then you should withdraw the Distributor rotor from the Distributor housing, remove the cmp sensor cover from the cmp sensor and then opened the two screws that hold the cmp sensor in place on the Distributor housing. If need be, take off the two Distributor flange bolts and the Distributor housing of the Cylinder Head. Check the corrosion and wear on the Distributor housing, the end play of the shaft, and the signal rotor for damage; if the defects are located, change the Distributor housing assembly. Also check the rotor for wear or crack, Distributor cap for carbon tracking, arcing or crack, and Distributor shaft o-ring seal is worn around tear, changing any component if required. Installation starts with installing the cmp sensor to the Distributor housing and tightening it using two screws without full tightening. Then install the cmp sensor cover to the cmp sensor and align the signal rotor ridge with the ridge on the cmp sensor by rotating the signal rotor. Adjust the air gap of the signal rotor (0.2 - 0.4 mm, 0.008-0.016 in) by shifting cmp sensor relative to signal rotor and tighten cmp sensor retaining screws to 5 n.m (44 lb in). As for cranking the engine after the Distributor was removed, make sure to replace it as required. Mount the Distributor rotor onto the Distributor housing proceed to mount the Distributor housing onto the Cylinder Head and align the marks made during the earlier steps and mount the two Distributor flange bolts loosely. Then, install the new Distributor Cap seal on the Distributor Cap and fasten the cap with two screws and join the Distributor electrical connector. Lastly, adjust the ignition timing of 1.0l engine as needed.
• Alternator
  30016320
  Q: How to replace the alternator on Chevrolet Metro?

  A: The generator replacement requires beginning with disconnecting the negative Battery Cable to prevent severe injuries that could result from tool shorts at the generator lead. You should first take out the air cleaner assembly then remove the rubber insulator, the nut and the electrical connector from generator b+ terminal. The generator becomes removable once the upper mounting bolt and Drive Belt lose their place before extracting the two lower generator mounting bolts. To install the generator place it back onto the vehicle first before tightening the lower bolts and then finish by leaving the upper bolt loose. For used belts set the desired deflection between 6-8 mm (0.24-0.31 in) while new belts need adjustments between 5-7 mm (0.20-0.27 in) during belt installation across the pulleys by applying 10 kg (22 lb) weight. Apply 23 n.m (17 lb ft) of torque when you finish adjusting the generator mounting bolts. Secure the electrical connector over the generator b+ terminal using the provided nut along with a rubber insulator before locking the connector nut with a torque of 8 n.m (71 lb in). Put everything back for the air cleaner assembly before reconnecting the negative Battery Cable and fastening it to 15 n.m (11 lb in).
• Camshaft
  91173879
  Q: How to properly service and repair the camshaft on a Chevrolet Metro?

  A: To remove the Camshaft, disconnect the negative Battery Cable and remove the valve rocker arm cover and the Timing Belt. Next, pull off the Camshaft Timing Belt pulley as well as the Camshaft sensor from its house. Lay a shop rag in the area where the Camshaft housing will be removed to catch any oil that hates. Then take off three Camshaft sensor housing bolts and the Camshaft housing itself from the Cylinder Head. Loosen all valve adjusting screw lock nuts and adjust screws back to permit free motion of the rocker arms. Remove the twelve Camshaft housing bolts gradually in the specified order and get the Camshaft housings and the Camshaft out of the Cylinder Head. For installation pour clean engine oil on the cams, journals, and the oil seal and install the Camshaft into the Cylinder Head. After applying engine oil to the housing bolts, they should then be tightened in a specified sequence to 11 nm (97 inch lbs.). Install the Camshaft oil seal beyond being flush with housing surface and then the Camshaft timing sprocket. Make sure that the pin from the Camshaft goes into the slot formed by the sprocket, and secure it with the Camshaft timing sprocket bolt with 60 nm (43 ft. Lbs.). Change the Timing Belt and adjust the valve lash by positioning the number one cylinder at the top dead center and the Camshaft in the right phase and adjust the valves as 1,2,8 and 6 and turn the Crankshaft for one revolution (360°) to adjust the valve as 3,4,7 and 5. Finally, mount the Camshaft sensor housing to the Cylinder Head using 11 nm (97 ft. Lbs.), the cam sensor to the housing, installation of the valve rocker arm cover and connecting back the negative battery lead.
• Power Steering Pump
  30020214
  Q: How to service and repair the power steering pump on Chevrolet Metro?

  A: The service process starts with power steering pump assembly mounting into a soft jaw vise where you must avoid excessive force to prevent housing deformity. Discovery of the pump body involves removing two bolts, inlet pipe and its O-ring before extracting the pressure sensor. Start the pump service by disconnecting the high pressure line connector and its O-rings and relief valve together with the spring from the pump body. The service requires removal of the 4 bolts and pump cover and O-ring before extracting the cam ring and rotor vane plates from the rotor. Start by extracting the pump shaft snap ring followed by removing the rotor together with the pulley and pump shaft from the pump body. To remove the pump shaft oil seal a flat-bladed tool should be used while simultaneously removing the side plate and O-rings. Prior to assembly you must clean all components until they are totally dry. Check each piece of the pump body, cover, side plate and shaft for heavy wear or damage while inspecting them. Replacement of the complete pump assembly will be necessary in case damage occurs. Check for damages on the cam ring, rotor and vanes before examining the relief valve fluid passage for both blockages and extensive wear areas. A feeler gauge should be used to check rotor and vane plate clearance but the measurement should stay below 0.06 mm (0.0023 inch). The dial calipers should measure the relief spring's free length between 33.5 mm and 36.5 mm (1.43 - 1.32 inch) to prevent needing pump replacement.