Mercedes Benz Model
(107) R107 - C107
280/300/350/380/420/450/500/560 SL's & SLC's
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Mercedes Benz 107 Roadster Common Repairs
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Busted: Sub-Frame Recall
Kick the pony: Adding More Horsepower
Cranking: Engine hard to start when warm
Screaming: High Idle Hell
Timing Chain Inspection
Overheating and Thermostat Modification
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Mercedes 107 Parts
Mercedes 350, 380, 450, 560 SL Parts
Mercedes 350, 380, 450, 500 SLC Parts
Mercedes (280sl, 280slc, 300sl, 350sl, 350slc, 420sl, 450sl, 450slc, 500sl, 500slc, 560sl,
Discount Mercedes Parts at Parts Geek
Get up to 75% off Auto Parts Warehouse.
Import Performance Parts at AutoBarn
Parts Train: MB SL Roadster Parts
Premium MB Parts - US Parts Experts
Brand Name Performance Products
JCWhitney.com Parts & Accessories
Auto Parts Nerd: Mercedes Benz Parts
Auto Detailing Supplies
5 Tips to Locating Parts
for Your Benz
See more Maintenance and Repair Articles on our Links Page!
Dash / Gauges / Controls
Dash Top Installation
Dash Gauge Cluster Servicing pdf
Cruising: Cruise Control Problems
Center Console Removal
Ignition Switch Repair
Combo Lever Switch Repair
Service Manuals & Literature
Mercedes Benz SL SLC Repair Manuals
350 450 380
560 SL & SLC
1972 - 1989
Hanes Repair Manual MB 350 450 SL SLC 1971-1980
MB Technical Information
/ Vents / Heat / AC
Vacuum System Troubleshooting Repair
Temper Temper: Heat and AC System Problems
Center Vent/Defroster Issues
R107 Heater Box Repair
Door Panel / Window Vacuum Switch Service
The Essential Buyers Guide Mercedes-Benz 280-560 SL
& SLC 107 Series 1971-1989. This book gives you a "warts
and all" introduction to what Mercedes-Benz 280-560SL
or SLC are like to own, drive and maintain, plus a
step-by-step buyers guide
on how to evaluate any purchase you might be considering.
It includes 100 photos of what to look for - and what
to avoid - plus a realistic assessment of running and
restoration costs, as well as market values. $17.96
Interior / Trim / Components
Sun-Down: Sun-Visor Removal-Replacement
Going-up: Window Switch Repair
Door Panel Removal Wood Trim pdf
Signal / Flasher Problems
Stereo Removal & Replacement
Mercedes-Benz Buyer's Guide Roadsters, Coups, Convertibles
book gives an up-close look at Mercedes-Benz roadsters,
convertibles, and two-and four-seat coupes, common replacement
parts, quotes, testimonials, rating charts, specification
Transmission Fluid and Filter Service
Transmission Vacuum Valve
Mercedes-Benz 350 and 450 V8, 1971-1980 Repair Manual
every subject vehicle and documents every step with
thorough instructions and clear photos. Haynes
manuals are used by the pros, but written for the do-it-yourselfer.
Differential Lube Change
Power Steering Service
Voltage Regulator Service
Injection Pump Servicing
Mercedes-Benz SLs & SLCs 1971-1989 Ultimate Portfolio
book has 52 articles drawn from the leading publications
covering road and track comparison tests, owners survey,
model introductions, buying guide and technical data.
Models reported on are: 350SL & SLC, 380SL & SLC, 450SL
& SLC, 500SL, 560SL. $34.16
Exterior / Trim / Components
Stickem up: Radio Antenna Problems
Wiper Washer Nozzle Repair
Soft top installation
Squealing: Noisy Brakes
Benz Service Manuals Service Manual, Chassis & Body,
Volumes 1 and 2 for Mercedes
107 Series Chassis and Body Assembly
Cruise Control Problems:
General Development Laboratories - Home Page
See trouble shooting.
1976-1980 Vacuum Actuator, 10-pin Amplifier System
1981-1993 Motor Actuator, 14-pin Amplifier System
and check the actuator and the amplifier.
Site Table of Contents for Replacing, Repairing, Rebuilding
Amplifiers & Actuators
Engine Hard to Start when
There are many reasons why the engine
would be difficult to start,
Some 450 SLs suffered from vapor
lock and hard re-start because of the position of the catalytic
Another possibility is the fuel
filter and fuel accumulator may be at fault or the pump may be the
The problem occurs particularly after the engine has been running
due to the pressure relief valve located at the back of the pump
inside. It is activated by a small spring and a metal cone which
in time sticks and does not allow pressure to be relieved.
As the pump is driven by a permanently excited electric motor the
pressure is reduced. After stopping, the fuel accumulator maintains
pressure in the system to facilitate starting and with this pressure
if the valve is stuck it develops an inner leak.
If you tap the pump firmly it releases the pressure valve and the
engine starts again. When the tapping becomes frequent, it is time
to replace the pump.
Mercedes knows this and they provide a Check Valve which is to be
installed by replacing the existing hollow screw on the pipe connection
to the pump, effectively providing a secondary pressure relief valve
and avoiding having to buy a new pump.
(Check valve $12.98, cap nut $1.49
Window Switch Repair
Two 4" screwdrivers
One small file 6" or smaller
One brush for cleaning
One pair of tweezers 6" for replacing springs & balls
One Q-tip for cleaning
One 6" strip of emery paper (fine-grit)
Step 1. Take the switch out of the console by means of a 4" standard
screwdriver. This can be done by lifting the switch part of the
way up, and out, & unplug the wiring block. Some plug into the side,
some into the back of the switch. The block plugs in only one way
and switches are not interchangeable. With the switch in hand, take
two screwdrivers, 4" type, & pry off the chrome cover. Do this slowly,
as it holds the switch together and you want to see how it works
for reassembly. (it's pretty simple) Two steel balls, two springs,
two brass rockers. What goes wrong, is, the contacts on the switch
get corroded and need to be cleaned for current to flow through.
Step 2. Take a small file, I carry a 6" jewelers file (fine-cut)
and a piece of emery paper (fine-grit) to clean the contact points.
Reassemble the switch and the window will work.
Note about the window switch: Do not hold the switch down any longer
than to close or open the window. There is no limit switch on these
cars. If your window moves slowly, clean the contacts to gain full
Should take about 20 minutes
your hazards or turn signals been problematic?
107.044 117.985 V8 450SL CIS fuel inj. years 1976-1980.
Hazards and turn signals share the same flasher.
Do your hazards works?
If not, then this flasher is likely to be the issue.
The flasher is part of the hazard switch.
You need to remove the ashtray, the mount for the ashtray, take
out the two screws that hold the wood console in place, the shift
boot (rubber around gear selector).
Carefully lift the front of the wood, roughly one half inch, then
slide the wood section back and it should be off.
On the bottom of the hazard switch is the flasher.
You may be able to fix this by cleaning the corroded contacts inside,
50/50 risk that it repairs or breaks.
1. Remove ash tray
2. Remove 2 screws from rear of ashtray holder
3. Remove ashtray holder. Pry out right side first and then disconnect
electrical connector on left side.
4. Remove 2 screws from wood console
5. Remove wood by sliding to rear to disengage dowel.
Stereo Removal & Replacement
Pull the faceplate off the radio.
Remove the ashtray and tray holder. When removing the ashtray frame
you have to twist from the passenger side toward the driver side
because there is an electrical connection on the driver side. Remove
the two screws in the back. Pull the wood fascia (of the AC controls)
down and out from the bottom.
Push down the two tabs sticking up from the space where the wood
fascia was and the radio unit slides out.
(remove the face plate from the radio and there are 2 locking bars
holding it in place ,1 each side, straight screwdriver)
Find Car Audio/Video Gear that Fits Your Vehicle at Crutchfield!
and buy this wiring harness (again this is for my 560). Wire everything
up and away you go.
I just pulled the 2 knobs off, and
what I'm calling the 'faceplate' is actually a thin mylar type printed
plastic insert . I just popped it off with a pen knife, and that
exposed the 2 'locking bars' that were secured by the screws