Auto Repair Manual Free Download and ReviewsFree download ebook pdf files automotive manual

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Special Precautions Special Precautions Disconnect battery earth lead. DO NOT turn crankshaft or camshaft when timing belt removed. Remove glow plugs to ease turning engine. Turn engine in normal direction of rotation (unless otherwise stated). DO NOT turn engine via camshaft or other sprockets. Observe all tightening torques. Check diesel injection pump timing after belt replacement. Removal Removal 1. Support engine. 2. Remove: Air filter and air intake hoses. Auxiliary drive belts. RH engine mounting. Vacuum pipe bracket. Timing belt upper cover [1]. 3. Turn crankshaft clockwise to TDC on No.1 cylinder. Ensure crankshaft sprocket timing marks aligned [2]. 4. Insert M6 x 1,00 bolt in camshaft sprocket and M8 x 1,25 bolt in injection pump sprocket to lock sprockets in position [3]. NOTE: If locating holes not aligned: Turn crankshaft one turn. 5. Remove: Crankshaft pulley (4 bolts). Timing belt lower cover [4]. 6. Slacken tensioner bolts [6]. Remove tensioner spring [5]. 7. Move tensioner pulley away from belt. Lightly tighten bolts. 8. Remove timing belt. Installation Installation 1. 2. 3. 4. 5. Use crankshaft pulley to check TDC marks aligned [2]. Ensure locking bolts located correctly [3]. Fit timing belt in clockwise direction, starting at crankshaft sprocket. Ensure belt is taut between sprockets. Temporarily fit crankshaft pulley. Ensure timing marks aligned [2]. Fit tensioner spring [5]. Corsa-B/Corsavan/Combo: Slacken tensioner bolts [6]. Allow tensioner to operate. Remove locking bolts [3]. Tighten tensioner bolts to 19 Nm [6]. Turn crankshaft slowly two turns clockwise. Ensure timing marks aligned [2]. 6. Astra-F/Vectra/Cavalier: Slacken tensioner bolts [6]. Temporarily fit crankshaft pulley. Remove locking bolts [3]. Turn crankshaft 60° anti-clockwise (against normal direction of rotation) [7]. Tighten tensioner bolts to 19 Nm [6]. Turn crankshaft slowly two turns + 60° clockwise until timing marks aligned [2]. 7. 8. 9. 10. 11. Ensure timing marks aligned [2]. Ensure locking bolts can be inserted in sprockets [3]. If not: Repeat tensioning procedure. Remove crankshaft pulley. Fit timing belt lower cover [4]. Fit crankshaft pulley. Tighten bolts to 20 Nm. Install components in reverse order of removal.

Vauxhall/Opel Astra & Zafira Petrol (Feb 98 – Apr 04) R-04 reg.

Astra Hatchback, Saloon & Estate, & Zafira MPV, inc. special/limited editions.
Does NOT cover Coupe or Convertible, new range introduced May 2004, Diesel or bi-fuel models
1.4 litre (1389cc), 1.6 litre (1598cc), 1.8 litre (1796cc), 2.0 litre (1998cc) & 2.2 litre (2198cc).
Does NOT cover 1.6 litre ‘Twinport’ or 2.0 litre turbo engines

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The above application is prone to the timing belt teeth lifting off the belt in service due to operating the belt with insufficient tension. The following instructions have been produced to assist in the fitting of your new timing belt, giving simple hints and tips, which should help avoid problems caused by adopting an incorrect fitting / adjustment procedure. For instructions for the removal of the engine components required to gain access to the timing belt, please refer to the vehicle workshop manual. Note:- Incorrect tension of the timing belt, can lead to the teeth lifting from the belt, resulting in belt failure, and subsequent major engine damage. Special Tools Required: 1) Timing belt tension gauge, (accurately calibrated), Part No’s: either Rover KM4088 or Borroughs BT33-86F 2) Two 8mm Allen keys (for tensioner adjustment) 3) Short length of round steel bar (for flywheel timing location) Fitting Procedure: 1) Before the old timing belt is removed, the crankshaft should be rotated clockwise to align the timing mark on the crankshaft pulley with the edge of the metal bracket, which forms part of the lower timing belt cover (See I). To lock the crankshaft in this position, which is 90 degrees before top dead centre, insert a steel rod of the correct diameter into the hole on the gearbox / engine adaptor plate, positioned on the front facing lower edge of the cylinder block (See diagram B), and locate with the corresponding hole in the flywheel. The timing marks on the camshaft gears should now be aligned at the 3 o’clock position for the left hand gear, and the 9 o’clock position for the right hand gear (See II). Undo the timing belt tensioner Allen bolt and remove tensioner. The old timing belt can now be removed (See III). Check the condition of the geared teeth on the camshaft, crankshaft, and water pump drives. Check the tensioner, water pump, and idler bearings. Fit the new timing belt over the drive gears, ensuring the timing marks set at ‘I’and‘II’ have not moved. Refit the tensioner using the anti-slip washer ‘IV’ supplied with the new timing belt. The anti-slip washer should be fitted between the tensioner and the backplate, with the abrasive side facing towards the tensioner. Note: A new anti-slip washer must always be fitted. Non modified vehicles will not have the anti-slip washer fitted. Rotate the tensioner, using the Allen key drive to set the initial pre-load tension, sufficient to prevent the timing belt from slipping over the toothed drives, then tighten the Allen bolt to 45Nm.

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NOTE: GM does not provide a timing mark diagram for belt installation without using the special tool(s) listed below. This article has been revised according to the information included in bulletin No: 47-61-34. CAMSHAFT TIMING – REVISED SERVICE PROCEDURE INSTALL OR CONNECT 1. Camshaft sprockets. ^ 1991-93 camshaft sprockets with washers and new locks finger tight ^ 1994-95 camshaft sprockets with taper lock rings finger tight 2. Timing belt in a counterclockwise direction around the sprockets. IMPORTANT: Make sure timing belt teeth are fully engaged with all sprockets. 3. 4. Timing belt tensioner pulley. Tighten: Tensioner pulley bolt to 50 Nm (37 lb ft). If actuator oil has been lost, till the actuator with SAE 5W30 Mobile 1 (or equivalent) synthetic engine oil through the end hole. Fill to bottom of plug hole ONLY when actuator is fully retracted and pin is installed. Rubber end plug to rear of the actuator assembly. Push until flush and snapped into place. Make sure the end plug has sealed against the case. Actuator bushing into side plate. Inspect: Bushings and appropriate holes to make sure they are clean. DO NOT lubricate. Timing belt actuator and actuator side plate. Tighten: Side plate bolt to 27 Nm (20 lb ft). 5. 6. 7. IMPORTANT: Rotate pulley assembly into belt a maximum of 15 Nm to allow engagement of the actuator shaft into the pulley arm socket.

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T] EXHAUST CAMSHAFT (RIGHT) T| INTAKE CAMSHAFT (RIGHT) T] SECONDARY TIMING BELT IDLER PULLEYS T) INTAKE CAMSHAFT (LEFT) 7] EXHAUST CAMSHAFT (LEFT) T] COOLANT PUMP T] INTERMEDIATE SHAFT BELT SPROCKET T] SERPENTINE BELT TENSIONER T| SECONDARY TIMING BELT TENSIONER PULLEY ??] GENERATOR ??] SECONDARY TIMING BELT TENSIONER ?2? SECONDARY TIMING BELT NOTE: START AT #7 AND INSTALL COUNTERCLOCIOMBE A LOCATION OF TIMING MARKS WITH CAM HOLD DOWN TOOLS J 38813 INSTALLED B FRONT COVER TIMING MARK C LOCATION OF TIMINS MARKS WITH DRIVE BELT IN- STALLED D LOCATION WHERE CAM HOLD DOWN TOOLS ARE INSTALLED RH EXHAUST CAMSHAFT SPROCKET RH INTAKE CAMSHAFT SPROCKET LH INTAKE CAMSHAFT SPROCKET LH EXHAUST CAMSHAFT SPROCKET PERMANENT MARKS PAINTED DOTS REMOVE PREVIOUS MARKS IF TIMING IS BEINS CHANGED AND MARK AGAIN IN THESE LOCATIONS TORSIONAL DAMPER INTERMEDIATE SHAFT SPROCKET NOTE: THIS TDC #1 EXHAUST. INTtRMEDlATE »HAFT BELT sprocket twno mark» at » o’clock (powtmo towards drain notch) NOTE : GM does not provide a timing mark diagram for belt installation without using the special tool(s) listed below. TOOLS REQUIRED: A J 38613 CamHold Down Tool A J 38614 Cam Sprocket Holding Tool NOTICE: If only one (1) bank is to be timed, make sure bank to bank earn timing relationship is one (1) revolution apart. Timing flats should be 180 degrees opposite (right bank versus left bank) when finally timed. 1. Remove all spark plugs. 2. Remove all camshaft sprockets. IMPORTANT: Remove oil from cam hold down tool bolt hole in carrier before installing and tightening bolt. 3. Rotate camshaft flats “up” and install J 38613. Tighten cam hold down tool bolt to 30 Nm (22 lb. ft). 4. Install all camshaft sprockets. 5. Timing belt by routing it around the idlers and sprockets. DO NOT bend, kink, or pry on belt as damage may occur. A. Start at intermediate cam sprocket and work counterclockwise. B. Make sure the belt is installed in direction of rotation. C. Engage teeth into all sprockets, place rubber hose behind belt at intermediate sprocket and accumulate slack at tensioner location. 6. Tensioner pulley to mounting base. A Use flat magnet, tape or cup plug to hold pivot tube in pulley during this step. Otherwise, pivot tube may fall out. A After starting pivot bolt, rotate arm counterclockwise to position square lug at 6 o’clock