Volkswagen Corrado (1993 year). Manual - part 75

 

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Volkswagen Corrado (1993 year). Manual - part 75

 

 

2.8L IN-LINE V6 (VR6) 

Fig. 11:  Aligning Crankshaft At TDC
Courtesy of Volkswagen United States, Inc.

2.8L IN-LINE V6 (VR6) 

         CAMSHAFT

         Removal
         Remove valve cover. Place crankshaft at TDC. Remove timing
chain from camshaft sprocket. Remove camshaft bearing caps. Remove
camshaft.

         Inspection
         Check camshaft bearing oil clearance. See CAMSHAFT table
under ENGINE SPECIFICATIONS at end of article. If oil clearance
exceeds specification, install new camshaft and recheck clearance. If
clearance still exceeds specification, replace cylinder head.

         Installation
         1) Lubricate all contact surfaces. When installing bearing
caps, ensure identification mark on bearing cap is readable from
exhaust manifold side and arrow points toward vibration damper. See
Fig. 13.
         2) Tighten bearing caps No. 1, 3 and 5 alternately in a
diagonal sequence to 15 ft. lbs. (20 N.m). Repeat procedure for
bearing caps No. 2, 4 and 6.
         3) To complete installation, reverse removal procedure.
Ensure timing marks are properly aligned. Before starting engine,

2.8L IN-LINE V6 (VR6) 

Fig. 13:  Installing Camshafts Into Cylinder Head
Courtesy of Volkswagen United States, Inc.

         WATER PUMP

NOTE:    Coolant/water mixture should be used at all times.

         Removal
         1) Obtain radio security code. Turn ignition off and wait for
20 seconds. Disconnect negative battery cable. Drain cooling system.
Disconnect front exhaust pipe from catalytic converter.
         2) Install 8.0 mm bolt in belt tensioner hole and remove
drive belt. See Fig. 3. Remove ignition cable guide. Disconnect front
and rear motor mounts. Attach Engine Sling (2024A) to engine. See
Fig. 4.
         3) Lift engine enough to access water pump. Secure pulley
using Spanner Wrench (VAG 1590). Remove water pump bolts. Push engine
toward left side and remove water pump.

         Installation
         When installing motor mounts, ensure that recess on engine
bracket fits into mounting tab of bonded rubber bushing. Hand tighten
motor mount bolts and light rock engine to ensure motor mounts are
fully seated. To complete installation, reverse removal procedure.

         OIL PAN

         Information not available from manufacturer.

         OVERHAUL

         CYLINDER HEAD

2.8L IN-LINE V6 (VR6) 

         Valve Stem Oil Seals
         With valve springs removed, remove oil seals using Valve Seal
Remover (3047A). To install new oil seal, slide plastic sleeve over
valve stem. Lubricate new oil seal. Using Valve Seal Installer (3129),
push oil seal on valve guide.

         Valve Guides
         1) Check valve-to-guide clearance specification. See
CYLINDER HEAD table under ENGINE SPECIFICATIONS at end of article. If
valve guide have previously been replaced, replace cylinder head.
         2) To replace valve guide, press guide out from camshaft
side. Lubricate guide and press in cold cylinder head (from camshaft
side) until shoulder makes contact. DO NOT exceed one ton pressure.
Ream guides to proper valve-to-guide clearance. See CYLINDER HEAD
table under ENGINE SPECIFICATIONS at end of article.

         Valve Seats
         1) Check valve seats before any other cylinder head service.
Insert the valve and hold firmly against the valve seat. Measure valve
stem tip-to-cylinder head distance. See Fig. 14.

Fig. 14:  Measuring Valve Installed Height
Courtesy of Volkswagen United States, Inc.

         2) This measurement determines installed valve height.
Subtract measured distance from minimum specification. See
MINIMUM VALVE INSTALLED HEIGHT table.

MINIMUM VALVE INSTALLED HEIGHT (2.8L) TABLE

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