1994 Mercedes-Benz C280 Service & Repair Manual Software
What's Included?
Lifetime Access
Fast Download Speeds
Offline Viewing
Access Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
2.8L 6-CYL
Article Text
1994 Mercedes-Benz C280
For 1
Copyright © 1998 Mitchell Repair Information Company, LLC
Monday, March 19, 2012 12:22AM
ARTICLE BEGINNING
1994 ENGINES
Mercedes-Benz 2.8L 6-Cylinder
C280
* PLEASE READ THIS FIRST *
NOTE: For repair procedures not covered in this article, see
ENGINE OVERHAUL PROCEDURES - GENERAL INFORMATION
article in the GENERAL INFORMATION section.
ENGINE IDENTIFICATION
The engine family designation is shown on the emission
control information plate (attached to radiator crossmember). The 1st
character identifies the model year ("R" for 1994) while the 4th and
5th characters identify the engine displacement.
ENGINE IDENTIFICATION CODES TABLE
Application & (1) Engine Engine
Engine Size ID Code
C280 2.8L .............. 104.941 .......... RMB3.2VJGCEK
(1) - The engine identification number must be used when
ordering replacement parts. For certification reasons,
engines 104.942 and 104.941 fall into the 3.2L engine
family, even if actual engine displacement is 2.8L.
ADJUSTMENTS
VALVE CLEARANCE ADJUSTMENT
Hydraulic valve lifters are used, and valve clearance
adjustment is not necessary.
REMOVAL & INSTALLATION
NOTE: Removal and installation information for C280 model is not
available.
OVERHAUL
CYLINDER HEAD
Valve Springs
2.8L 6-CYL Article Text (p. 2)
1994 Mercedes-Benz C280For 1
Copyright © 1998 Mitchell Repair In
1) Remove camshafts. See CAMSHAFT. Install Supporting Bar
(104 589 01 59 00) onto cylinder head. Using a rubber removal tool,
remove bucket tappets. When removing bucket tappets, place in an order
easily identified for installation. Bucket tappets must be installed
at same point.
NOTE: DO NOT use a magnetic tool to remove bucket tappets. Small
iron particles can gather on magnetized sliding surfaces
causing damage to buckets and cams.
2) Using compressed air, blow out spark plug recesses. Remove
spark plugs. With respective cylinder at TDC, pressurize cylinder to
approximately 75 psi (5.2 bar) with compressed air. Using a valve
spring compressor, compress valve spring. Using a magnetic finger,
remove valve cone halves. Remove top valve spring retainer and valve
springs. To install, reverse removal procedure.
Valve Stem Oil Seals
Using pliers, remove old valve stem seals. Ensure no burrs
are present on valve stem. Install valve stem seals manually using
assembly sleeves included in repair kit.
CYLINDER BLOCK ASSEMBLY
Piston & Rod Assembly
1) Piston must be installed in cylinder block with arrow on
top of piston toward front of engine. Piston and cylinder bores are
subdivided into 3 diameter groups. These group numbers are identified
as an "A", "X" or "B" stamped into top of piston and adjacent to
piston in cylinder block. When replacing pistons, replacement pistons
must have same group number as identified on cylinder block. See
Fig. 1.
CAUTION: Check connecting rod bearing cap bolts for excessive
stretching. Failure to replace stretched bolts may result
in bolts breaking.
2) Measure bolt length from bottom of bolt head to end of
bolt threads. If bolt length is not within specification, replace
stretch bolt. See CONNECTING ROD BEARING CAP BOLT SPECIFICATIONS
table.
CONNECTING ROD BEARING CAP BOLT SPECIFICATIONS TABLE
Application In. (mm)
Bolt Length
Standard ..................... 2.035-2.059 (51.70-52.30)
Maximum .................................... 2.08 (52.9)
2.8L 6-CYL Article Text (p. 3)
1994 Mercedes-Benz C280For 1
Copyright © 1998 Mitchell Repair Information Company, LLC
Fig. 1: Piston Identification
Courtesy of Mercedes-Benz of North America
ENGINE OILING
ENGINE LUBRICATION SYSTEM
Oil pump, located in oil pan, is chain driven by crankshaft
sprocket. Oil filter is located inside oil cooler.
Crankcase Capacity
Total oil capacity is 8.1 qts. (7.7L). Refill capacity is 7.9
qts. (7.5L) with a new filter.
TORQUE SPECIFICATIONS
2.8L 6-CYL Article Text (p. 4)
1994 Mercedes-Benz C280For 1
Copyright © 1998 Mitchell Repair Information Company, LLC
TORQUE SPECIFICATIONS TABLE
Application Ft. Lbs. (N.m)
Camshaft Bearing Cap Bolts ....................... 15 (21)
Camshaft Flange Shaft Bolt ....................... 13 (18)
Camshaft Flange Shaft Bolt (Torx Head) ........... 16 (22)
Camshaft Gear Nut ................................ 48 (65)
Chain Tensioner Housing (Nut) .................... 37 (50)
Chain Tensioner Housing Screw .................... 30 (40)
Crankshaft Pulley Bolts .......................... 24 (32)
Cylinder Head Bolts
Step 1 ......................................... 41 (55)
Step 2 ............................................. (1)
Step 3 ............................................. (1)
Drive Plate Bolts
Step 1 ......................................... 22 (30)
Step 2 ............................................. (1)
Drive Shaft Clamping Nut ................... 22-30 (30-40)
Front Engine Mount-To-Body ....................... 18 (25)
Oil Pump Bolts ................................... 18 (25)
Oil Pump Gear Bolt ............................... 24 (32)
Rear Engine Support Bracket-To-Body .............. 30 (40)
Rear Engine Mount-To-Engine ...................... 18 (25)
Top Front Cover Bolts ............................ 15 (21)
Two-Mass Flywheel Bolts
Step 1 ......................................... 30 (40)
Step 2 ............................................. (1)
Vibration Damper Bolt .......................... 295 (400)
INCH Lbs. (N.m)
Camshaft Holding Armature Bolt .................... 62 (7)
Crankshaft Shield Bolts .......................... 89 (10)
Front Timing Cover Bolts
6-mm ............................................ 80 (9)
8-mm ............................................... (2)
Oil Pan Bolts .................................... 89 (10)
(1) - Tighten an additional 90 degrees.
(2) - Tighten to 15 ft. lbs. (21 N.m).
ENGINE SPECIFICATIONS
GENERAL ENGINE SPECIFICATIONS
GENERAL ENGINE SPECIFICATIONS TABLE
Application Specification
2.8L
2.8L 6-CYL Article Text (p. 5)
1994 Mercedes-Benz C280For 1
Copyright © 1998 Mitchell Repair Information Compan
Displacement ...................... 171.1 Cu. In. (2.8L)
Bore ................................... 3.54" (89.9 mm)
Stroke ................................. 2.89" (73.5 mm)
Compression Ratio ................................. 10:1
Fuel System .................................... HFM-SFI
Horsepower @ RPM ............................ 194 @ 5500
Torque Ft. Lbs. @ RPM ....................... 199 @ 3750
PISTONS, PINS & RINGS SPECIFICATIONS
PISTONS, PINS & RINGS SPECIFICATIONS TABLE (1)
Application In. (mm)
Pistons
Diameter
Group A ................. 3.5394-3.5396 (89.900-89.906)
Group X ................. 3.5396-3.5398 (89.906-89.912)
Group B ................. 3.5398-3.5401 (89.912-89.918)
Recess Diameter ............................. 2.913 (74)
Recess Depth ................................ .051 (1.3)
Compression Height ......................... 1.22 (31.1)
Ring Side Clearance
1st Ring ........................ .060-.061 (1.52-1.55)
2nd Ring ........................ .069-.070 (1.75-1.77)
3rd Ring ........................ .118-.119 (3.00-3.02)
(1) - Information for piston pins and rings is not available
from manufacturer.
CYLINDER BLOCK SPECIFICATIONS
CYLINDER BLOCK SPECIFICATIONS TABLE
Application In. (mm)
Cylinder Bore
Standard Diameter ......................... 3.540 (89.9)
1st Repair Stage ......................... 3.550 (90.15)
2nd Repair Stage ......................... 3.560 (90.40)
VALVES & VALVE SPRINGS SPECIFICATIONS
VALVES & VALVE SPRINGS SPECIFICATIONS TABLE (1)
Application In. (mm)
Intake Valve
Stem Diameter .......................... .3132-.3138 (7)
2.8L 6-CYL Article Text (p. 6)
1994 Mercedes-Benz C280For 1
Exhaust Valve
Stem Diameter .......................... .3518-.3527 (8)
(1) - Information on valve springs is not available from
manufacturer.
CYLINDER HEAD SPECIFICATIONS
CYLINDER HEAD SPECIFICATIONS TABLE
Application In. (mm)
Valve Guides
Inside Diameter
Intake ....................................... .276 (7)
Exhaust ...................................... .315 (8)
Length
Intake .................................... 1.40 (35.5)
Exhaust ................................... 1.50 (37.9)
CAMSHAFT SPECIFICATIONS
CAMSHAFT SPECIFICATIONS TABLE
Application In. (mm)
Bearing Diameter
Standard ................... 1.179-1.180 (29.947-29.960)
Repair Size ................ 1.159-1.160 (29.434-29.450)
Bearing Play
Radial ......................... .0016-.0030 (.040-.074)
Axial .......................... .0024-.0083 (.060-.210)
END OF ARTICLE
You're Reading a Preview
What's Included?
Lifetime Access
Fast Download Speeds
Offline Viewing
Access Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
$36.99
Viewed 17 Times Today
Secure transaction
What's Included?
Lifetime Access
Fast Download Speeds
Offline Viewing
Access Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
$36.99
If you are in need of a repair manual for your 1994 Mercedes-Benz C280, look no further. Our accessible repair manual software is perfect for both professional mechanics and DIY enthusiasts. In the past, traditional service manuals in book format were costly and inconvenient. Our repair manual software provides the same information at a much lower cost and with greater convenience.
Whether you need to fix the brakes, replace suspension components, get the engine running, or perform standard maintenance, this manual has you covered. It includes comprehensive service information for the brakes, engine, suspension, steering, drivetrain, electrical systems, heating, air conditioning, and more.
By using this repair manual software, you can save a significant amount of money on vehicle maintenance. Mechanics often charge high fees for repairs, but with this manual, you can do it yourself. The software is compatible with Windows, Mac computers, smartphones, and tablets, making it easy to access and use.
