Description
Factory Mercedes 450 SL Workshop Manual (1972–1980)
This factory-level workshop manual gives American owners and independent technicians everything needed to service and repair the classic Mercedes 450 SL R107 roadster from bumper to bumper.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M117 4.5L V8 (naturally aspirated, US and European spec) |
| Diesel | N/A |
| Transmissions | 3-speed automatic |
| Drive | RWD |
| Model Years | 1972–1980 |
| Badge Twins | N/A |
Common 450 SL Repairs Covered
| System | Procedures |
|---|---|
| M117 Timing Chain | Chain, tensioner, and guide rail replacement — a known wear item on high-mileage V8s |
| Bosch K-Jetronic Fuel Injection | Fuel distributor service, cold-start valve testing, idle adjustment, injector cleaning |
| Cooling System | Thermostat replacement, radiator flush, water pump overhaul, hose inspection |
| Soft-Top & Body Seals | Convertible top mechanism adjustment, weatherstrip replacement, hardtop fitting procedures |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Why does my 450 SL’s timing chain rattle at cold start?
The M117 V8 is notorious for timing chain tensioner wear after extended service intervals. This manual details the full chain, tensioner, and guide rail replacement procedure with factory torque specs, so you can address the rattle before it leads to engine damage.
Does this manual cover both the R107 hardtop and soft-top configurations?
Yes. The 450 SL rode the R107 platform throughout its 1972–1980 production run and was sold exclusively as a roadster with both a removable hardtop and a folding soft top. Body section procedures cover both roof configurations.
Are the Bosch K-Jetronic fuel injection service procedures included?
Absolutely. The fuel and exhaust section covers the complete K-Jetronic continuous injection system fitted to US-market 450 SLs, including fuel distributor servicing, control pressure regulator testing, injector flow checks, and idle mixture adjustment steps.
What format is the manual?
The manual is delivered as a fully searchable PDF file. It downloads instantly after purchase, is printable page by page or in full, and works on any device — Windows PC, Mac, tablet, or smartphone — using any standard PDF reader.
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