rocker arms 2002 impala
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Filed Under (Chevrolet) by admin on 21-01-2011
1. 2. 3. 4. Disconnect the negative bakery. Remove the upper intake manifold. Remove the left valve rocker arm cover. Remove the right valve rocker arm cover. 5. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector. 6. Disconnect and remove the fuel injector and the Manifold Absolute Pressure (MAP) sensor wiring harnesses. 7. Remove the fuel pipe clip bolt. 8. Remove the fuel pipe clip. 9. Remove the fuel feed pipe from the fuel injector rail. 10. Remove the fuel return pipe from the fuel injector rail. 11. Remove the fuel injector rail. 12. Remove the power steering pump from the front engine cover and reposition. 13. Remove the heater inlet pipe with heater hose from the lower intake manifold and reposition. 14. Remove the radiator inlet hose from the engine. 15. Remove the thermostat bypass hose from the thermostat bypass pipe and lower intake manifold pipe. 16. Remove the lower intake manifold bolts. 17. Remove the lower intake manifold. 18. Remove the valve rocker arms and pushrods. 19. Remove the lower intake manifold gaskets and seals. 20. Clean the lower intake manifold gasket mating surfaces. 21. Remove and clean all the RTV sealant from the lower intake manifold and the engine block (1).
Filed Under (Honda) by admin on 21-12-2010
1. Check the engine oil level. Is the level OK? YES- Go to step 2 . NO- Adjust the engine oil to the proper level, then go to step 14 . 2. Turn the ignition switch ON (II). 3. Clear the DTC with the HDS. 4. Do the VTEC TEST in the INSPECTION MENU with the HDS. Is the result OK? YES- Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the rocker arm oil pressure switch (VTEC oil pressure switch) and the ECM/PCM. NO- Go to step 5 . 5. Check the result of step 4 . Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) Failure Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) Open Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) SIG Line Open Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) GND Line Open Is the test result any of the above? YES- Go to step 6 . NO- Check for poor connections or loose terminals at the rocker arm oil pressure switch (VTEC oil pressure switch). If it is OK, replace the rocker arm oil control solenoid (VTEC solenoid valve) (see step CMP SENSOR A REPLACEMENT ), then go to 14 . 6. Turn the ignition switch OFF. 7. Disconnect the rocker arm oil pressure switch (VTEC oil pressure switch) 2P connector. 8. Check for continuity between rocker arm oil pressure switch (VTEC oil pressure switch) 2P connector terminals No. 1 and No. 2.
Filed Under (Mercedes-Benz) by admin on 10-08-2010
CAUTION: If the camshaft is renewed, the rocker arms must also be renewed. Inductively hardened camshafts must only be used with hard chrome-plated rocker arms (standard up to February 1989). Chilled cast camshafts may only be used with rocker arms with carbide metal coating (standard as from March 1989). If bearing fretting or severe scoring exists, the camshaft bearings can be drilled open by 0.5 mm (0.020 in) in the cylinder head or in the rocker arm bearing brackets and a camshaft with oversized bearing journals installed. After damage to a cam (e. g. worn cams), all the affected timing parts (hydraulic elements, valves, valve springs, valve plates and valve wedges) should be checked for signs of damage. If individual rocker arm bearing brackets are renewed, all the bearing brackets must be tightened to specification and the camshaft checked to ensure that it moves freely. REMOVAL Setting TDC 1. Set piston of No. 1 cylinder to TDC (arrow). 2. Remove front cover at the top, See: Timing Components/Timing Cover/Service and Repair 3. Remove chain tensioner, See: Timing Components/Timing Chain Tensioner 4. Mark position of camshaft gear relative to camshaft. This is done by applying colored marking next to the locating pin (20) on the camshaft gear. CAUTION: If the camshaft gear is renewed, the colored marking must be applied to the corresponding point on the new camshaft gear. The camshaft gear with 3 oblong holes (1st version) should be renewed if performing repairs with the camshaft gear 2nd version with 3 holes e 6 mm. The camshaft gear 2nd version can be used when performing repairs in place of the camshaft gear 3rd version with 3 7 mm holes. In this case the 3 holes should be widened from 6 mm to 7 mm. The timing can be set by turning or changing the side of the camshaft gear on the camshaft
Filed Under (Audi) by admin on 15-09-2009
Check the following wire connection for open circuit according to wiring diagram:Relay carrier in E-box, plenum chamber, position 3Terminal Harness connector atignition coils Terminal 8 1 Specified value: Wire resistance max 1.5 – If necessary, repair wire connection. Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 – 1.8 Liter 4-Cyl. 5V Turbo Generic Scan Tool, Engi…Page 5 24-158 If no malfunctions are found in wires: – Check voltage supply of Motronic Engine Control Module (ECM) voltage supply relay – J271 – Page 24-158 . – Check activation of Motronic Engine Control
Module (ECM) voltage supply relay – J271 – Page 24-159 . Checking voltage supply If specified value is not obtained:
- Connect multimeter for voltage measurement as follows. Relay carrier in E-box, plenum chamber, position 3
Filed Under (Saturn) by admin on 01-10-2010
Automatic Transaxle 2-3 Shift Flare During First Minutes of Driving After Cold Soak (Perform Bulletin Procedure) Models: 2002 Saturn S-Series Vehicles with Automatic Transaxle (RPOs MP6, MP7) Attention: General Manager, Fixed Operations Manager, Parts Manager, Technician Condition: Some customers of 2002 S-series vehicles with MP6 or MP7 automatic transaxles may comment on a 2-3 shift flare during the first few minutes of driving after vehicle cold soak. Cause: This condition may be caused by improper pressure, a leak in the 2nd clutch circuit, improper clutch plate finish on 2nd and 3rd clutches, a restriction in the 3rd clutch oil delivery path in the end cover, or improper surface finish in the piston bores of the 2-3 clutch housing. Correction: To correct this condition, duplicate by cold soaking the vehicle the amount of time at temperature described by the owner. Refer to procedure in this bulletin. Service Procedure Verify proper transaxle pressures by installing gauge and performing stepped pressure test after cold soak. Refer to “Stepped Pressure Test” procedure in the 2002 Saturn S-Series Automatic Transaxle Service Manual. ^ If pressures are low, follow the diagnostic chart for DTC P0745 for possible causes of low pressure. Refer to “P0745 – PC Solenoid Pressure Low” diagnostic in the 2002 Saturn S-Series Automatic Transaxle Service Manual. ^ If pressures are within normal ranges, proceed to Step 2. Remove the transaxle end cover. Refer to “End Cover Replacement” in the 2002 Saturn S-Series Automatic Transaxle Service Manual. Check torque on input shaft nut and end cover 3rd clutch oil passage for restrictions. ^ Input shaft nut torque should be 150 N.m (111 ft-lb). If nut is found to be loose, remove nut, clean threads and install new nut using Service Manual procedures and proceed to check 3rd oil passage. ^ Check 3rd oil passage in the end cover by pouring transaxle fluid through it and another passage. If the passage is restricted, you will notice significantly less fluid flow through it. If 3rd clutch passage is found to be restricted, install new end cover per Service Manual procedures and retest for concern. ^ If nut and 3rd clutch passage are okay, proceed to Step 4. Remove transaxle from vehicle. Refer to “Transaxle Removal” in the 2002 Saturn S-Series Automatic Transaxle Service Manual. Disassemble transaxle and install new 2-3 clutch housing, clutch pistons and clutch plates. Refer to “Transaxle Disassemble” in the 2002 Saturn S-Series Automatic Transaxle Service Manual.