1993 VOLKSWAGEN CORRADO Repair Manual

2.8L IN-LINE V6 (VR6)
Article Text (p. 6)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PM
CRANKSHAFT OIL SEAL
Removal
Install 8.0 mm bolt in belt tensioner hole and remove
accessory drive belt. See Fig. 3. Remove vibration damper. Loosen
inner section of Oil Seal Extractor (3203) about 3 turns (4 mm) and
lock in position with knurled screw. Turn inner section of oil seal
extractor until seal is removed.
Installation
Place guide Sleeve (3266/1) on crankshaft. Push oil seal over
guide sleeve. Using Oil Seal Installer (3266) and vibration damper
bolt, press oil seal in completely. See Fig. 8. Reverse removal
procedure to complete installation.Fig. 8: Installing Crankshaft Oil Seal
Courtesy of Volkswagen United States, Inc.
TIMING CHAIN
Removal
1) Ensure crankshaft is aligned at TDC. Remove transaxle and
bellhousing assembly. Remove torque converter or clutch assembly (as
applicable). Match mark all components to ensure reassembly in
original position.
2) Mark timing chains for direction of travel. Align and
install Camshaft Guide (3268) onto cylinder head bolts. See Fig. 9.
Remove upper and lower chain tensioners. If necessary, remove
intermediate sprocket and camshaft sprocket bolts. Remove timing
chain.

2.8L IN-LINE V6 (VR6)
Article Text (p. 7)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PMFig. 9: Installing Camshaft Guide Onto Cylinder Head
Courtesy of Volkswagen United States, Inc.Fig. 10: Exploded View Of Timing Chain & Related Components
Courtesy of Volkswagen United States, Inc.

2.8L IN-LINE V6 (VR6)
Article Text (p. 8)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PM
Installation
Leave Camshaft Guide (3268) installed. Ensure crankshaft is
aligned at TDC. See Fig. 11. Ensure intermediate shaft is correctly
aligned. See Fig. 12. Install timing chain on sprockets. Reverse
removal procedure to complete installationFig. 11: Aligning Crankshaft At TDC
Courtesy of Volkswagen United States, Inc.

2.8L IN-LINE V6 (VR6)
Article Text (p. 9)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PMFig. 12: Aligning Intermediate Shaft At TDC
Courtesy of Volkswagen United States, Inc.
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)
Article Text (p. 10)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PM
allow 30 minutes for cam followers to bleed down.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)
Article Text (p. 11)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PM
Cylinder Head
Clean all gasket mating surfaces. Check cylinder head for
warpage. Ensure warpage does not exceed .004" (0.1 mm).
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) TABLEÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

2.8L IN-LINE V6 (VR6)
Article Text (p. 12)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PM
Application In. (mm)
Intake Valve ................................. 1.33 (33.9)
Exhaust Valve ................................ 1.34 (34.1)ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ 3) The difference is maximum refacing allowable for valve and
seat. If valve installed height is too low or too high, lifters will
not work correctly. Replace cylinder head assembly.
Valves
Measure valve length, stem diameter and valve margin. If not
within specification, replace valves. Lap valves by hand or replace as
necessary. See VALVES SPECIFICATIONS table under ENGINE SPECIFICATIONS
at end of article.
CYLINDER BLOCK ASSEMBLY
Piston & Rod Assembly
1) Make sure piston, rod and rod caps are marked with
matching cylinder number prior to removal. Ensure arrow on top of
piston points toward pulleys. Ensure marks on rod and cap are
positioned correctly. See Fig. 15. Rod cap bolts and nuts must be
replaced after removing or loosening.Fig. 15: Assembling Piston & Rod
Courtesy of Volkswagen United States, Inc.

2.8L IN-LINE V6 (VR6)
Article Text (p. 13)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:47PM
2) Mark piston in relation to pin. Remove circlips from ends
of pin bore. Use Piston Pin Replacer/Installer (VW 222A) to remove and
install piston pin. If pin is too tight, heat piston to 140øF (60øC).
Ensure rod is properly positioned with piston.
Fitting Pistons
Measure clearances with cylinder block supported on work
bench. Check clearance of piston-to-cylinder bore. Piston diameter is
stamped on top of piston in millimeters.
PISTON-TO-CYLINDER BORE DIMENSIONS TABLE
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ Piston Diameter Cylinder Bore
Size In. (mm) In. (mm)
Standard .......... 3.188 (80.98) ........ 3.189 (81.01)
1st Over .......... 3.208 (81.49) ........ 3.209 (81.51)
2nd Over .......... 3.228 (81.98) ........ 3.229 (82.01)
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ Piston Rings
1) Measure ring end gap. Measure ring side clearance with
piston. Replace if necessary. See PISTONS, PINS & RINGS SPECIFICATIONS
table under ENGINE SPECIFICATIONS at end of article.
2) Install rings on piston with OBEN or TOP mark facing
upward. Recessed edge on outside of center ring must face piston pin
(down). Position ring gaps on piston at 120 degree intervals.
Connecting Rod Bearings
Mark rod caps for reinstallation. Use Plastigage to measure
bearing clearances. Measure connecting rod side play. Replace or
machine as necessary. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS
table under ENGINE SPECIFICATIONS at end of article. Tighten evenly to
specification in several steps. See TORQUE SPECIFICATIONS table at end
of article.
Crankshaft & Main Bearings
Main bearing caps are marked with matching journal for
installation in original position. See Fig. 16. Measure crankshaft end
play. See THRUST BEARING.