Filed Under (Nissan) by admin on 28-11-2010
1. Release fuel pressure. See FUEL PRESSURE RELEASE . Drain coolant from radiator and cylinder block. Drain engine oil. Disconnect all necessary coolant hoses, electrical connectors, vacuum hoses, fuel lines and control cables. 2. Remove front exhaust tube. Remove intake manifold collector supports, and intake manifold. Remove exhaust manifold with catalytic converter. Remove air injection valve pipe. Remove intake air duct. Remove radiator fan and shroud. Remove injectors and fuel rail as an assembly. Remove distributor cap and spark plugs. 3. Set cylinder No. 1 at TDC of compression stroke, ensuring marks on crankshaft pulley and front cover align, and distributor rotor points to spark plug wire No. 1 on cap. Remove cylinder head cover. Remove distributor. NOTE: It is not necessary to install a stopper to prevent inner or outer timing chains from disengaging sprockets. 4. Prevent camshafts from turning, and remove camshaft sprocket bolts. Remove camshaft sprocket. See Fig. 13 . Mark and remove camshaft bearing caps in reverse order of installation. See Fig. 16 . Remove camshafts. 5. Loosen cylinder head bolts in 2 or 3 steps, in reverse order of tightening sequence. See Fig. 11 . Remove camshaft sprocket cover. Remove outer (upper) chain tensioner and guide. Remove outer timing chain. Remove idler sprocket bolt. Remove cylinder head. 6. Remove oil pan and oil strainer. See OIL PAN. Remove accessory drive belts. Remove A/C compressor idler pulley (if equipped). Remove crankshaft pulley. Remove front cover. Remove chain tensioner, tensioner arm and chain guides. Remove inner (lower) timing chain and idler sprocket. Remove oil pump drive spacer and crankshaft sprocket. Inspection 1. Inspect chain roller links. Replace chain if roller links are cracked or worn. Inspect cylinder head and cylinder block mating surfaces for warpage. If warpage exceeds specification, machine cylinder head. See CYLINDER HEAD under ENGINE SPECIFICATIONS. 2. If machining reduces cylinder head height to less than specification, replace cylinder head. After machining, rotate camshaft by hand. Replace cylinder head if camshaft does not rotate freely. Installation
Filed Under (Nissan) by admin on 27-11-2010
CAUTION: If camshaft or crankshaft is rotated with timing chain disconnected, piston will contact valves, resulting in bent valves. NOTE: For reassembly reference, apply paint marks to timing chain and camshaft sprockets before removing. Removal 1. Release fuel pressure. See FUEL PRESSURE RELEASE . Drain coolant from radiator and cylinder block (drain plug is on left side of block, between flywheel and exhaust manifold). Remove accessory drive belts and power steering pump bracket. Remove intake air duct. Remove right front wheel and splash shield. 2. Remove engine undercovers. Remove front exhaust pipe. Remove front engine mount from cylinder head. Remove cylinder head cover, distributor cap and spark plugs. Remove intake manifold support. Set piston No. 1 at TDC of compression stroke. For installation reference, mark rotor in relation to distributor housing and distributor housing in relation to cylinder head. Remove distributor. 3. Remove cylinder head front cover. See Fig. 4 . Remove water pump pulley and thermostat housing. Remove chain tensioner and guide. See Fig. 6 . Loosen idler sprocket bolt. Remove camshaft sprockets. Remove idler sprocket bolt. Remove cylinder head bolts in 2 steps, in sequence. See Fig. 5 . Remove cylinder head with manifolds. Remove idler sprocket shaft from rear side. Remove outer (upper) timing chain. 4. Remove crossmember and rear engine mount. Remove oil pan and strainer. Remove crankshaft pulley. Support engine using a jack. Remove front engine mount. Remove front cover bolts (one of these bolts retains water pump and front cover). Remove front cover. Remove idler sprocket, inner (lower) timing chain and oil pump drive spacer. Remove chain guides and crankshaft sprocket.
Filed Under (Hyundai) by admin on 21-11-2010
MANUFACTURER’S SUGGESTED SCHEDULED MAINTENANCE The manufacturer recommends the belt be replaced every 60,000 miles, except in California. In California, inspect timing belt at 60,000 miles, and replace as necessary. REMOVAL & INSTALLATION CAUTION: This application is an interference engine. Do not rotate camshaft or crankshaft when timing belt is removed, or engine damage may occur. TIMING & COUNTERBALANCE SHAFT BELTS Removal CAUTION: DO NOT rotate engine counterclockwise (as viewed from timing belt end of engine). If reusing timing belt, place reference mark on timing belt to indicate direction of rotation before removing. 1. Remove drive belts and drive pulleys from crankshaft and water pump. Remove timing belt covers. To align timing marks, rotate engine clockwise so No. 1 cylinder is at TDC of compression stroke. Ensure camshaft sprocket timing marks align with upper surface of rocker cover. Dowel pin of camshaft sprocket should be pointing upward. See Fig. 1 and Fig. 2 . 2. Remove timing belt auto tensioner. If reusing timing belt, place mark on timing belt to indicate direction of belt rotation. Remove timing belt. Remove camshaft sprockets. 3. Remove plug at left side of block and insert a screwdriver to hold left counterbalance shaft in position. Screwdriver will have to be inserted at least 2.36″ (60 mm). Remove oil pump sprocket nut and sprocket. See Fig. 2 . 4. Loosen right counterbalance shaft sprocket mounting bolt. Remove tensioner “B” and timing belt “B”. See Fig. 2 . Remove crankshaft sprocket “B” from crankshaft.
Filed Under (Honda) by admin on 16-11-2010
Removal (1979-83 Accord & 1979-82 Prelude) 1. Disconnect negative battery cable. Remove engine support bolts and nuts. Remove side rubber mount. Remove side mount bracket. Remove cruise control actuator. Remove engine splash guard. Remove water pump drive belt, water pump pulley and crankshaft pulley. See Fig. 1 . Remove alternator, belt, A/C compressor and belt. CAUTION: Crankshaft pulley bolt may stick to the crankshaft threads when properly torqued. A properly torqued pulley bolt may require up to two or three times the installation torque to remove. 2. Remove valve cover. Ensure cylinder No. 1 is at TDC of compression stroke and camshaft is aligned to mark. See Fig. 2 . Remove upper timing belt cover from cylinder head. Remove crankshaft pulley. Remove lower timing belt cover from engine block. Loosen, but do not remove, timing belt adjusting and pivot bolts. If reusing belt, mark direction of belt rotation. Slide belt off pulleys. Inspection (1979-83 Accord & 1979-82 Prelude) Inspect timing belt for wear or rounded edges of drive teeth. Inspect belt for signs of oil contamination. Replace belt if damaged or contaminated. Inspect all drive gears for wear in drive belt area. Replace as necessary. Installation (1979-83 Accord & 1979-82 Prelude) To install, reverse removal procedure, using care not to excessively bend or twist belt. If reinstalling old belt, install belt so same direction of rotation will be maintained. Adjust drive belts to proper tension.
Filed Under (Hyundai) by admin on 15-11-2010
1. Remove all drive belts and drive pulleys from crankshaft and water pump. Remove generator bolt, if necessary. Remove crankshaft pulley and water pump pulley. 2. Remove timing belt covers and gaskets, noting bolt lengths and locations. DO NOT rotate engine counterclockwise, as viewed from timing belt side of engine. Remove timing belt tensioner pulley. 3. Rotate engine clockwise to align all timing marks so No. 1 cylinder is at TDC of compression stroke. See Fig. 1 . If reusing belt, place mark on timing belt to indicate direction of belt rotation. Remove timing belt. Inspection Check belt teeth for cracks, damage, and oil contamination. Inspect all sprockets for damage. Check tensioner pulley and idler pulley for grease leakage and worn bearings. Replace components if damaged. Installation