Description
Factory Mercedes 450 SE Workshop Manual (1972–1980)
This official factory-level service manual for the Mercedes-Benz 450 SE gives US technicians and enthusiasts complete repair and maintenance coverage for the iconic W116 flagship sedan across its entire 1972–1980 production run.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M117 4.5L V8 (Bosch K-Jetronic fuel injection) |
| Diesel | N/A |
| Transmissions | 3-speed automatic with torque converter |
| Drive | RWD |
| Model Years | 1972–1980 |
| Badge Twins | Mercedes-Benz 450 SEL (long-wheelbase W116 variant) |
Common 450 SE Repairs Covered
| System | Procedures |
|---|---|
| M117 Timing Chain | Chain and tensioner replacement — a well-documented wear item on aged M117 engines |
| K-Jetronic Fuel Injection | Fuel distributor service, cold-start valve testing, warm-up regulator adjustment |
| Automatic Transmission | Fluid and filter service, valve body adjustment, kickdown cable setup, full overhaul |
| Cooling System | Thermostat replacement, radiator flush, water pump R&R, hose inspection procedures |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Does the manual cover the timing chain on the M117 V8?
Yes. Timing chain and tensioner replacement is fully documented, including removal sequences, torque specifications, and reassembly procedures — essential maintenance on any high-mileage M117 4.5L engine.
Is the W116 450 SEL also covered by this manual?
The manual is written specifically for the 450 SE (standard-wheelbase W116). Many procedures also apply to the long-wheelbase 450 SEL because both share the M117 engine and drivetrain, but body and chassis dimensions differ. A dedicated 450 SEL manual is recommended for body-specific work.
Are Bosch K-Jetronic fuel injection diagrams included?
Yes. The manual provides complete K-Jetronic service procedures, including fuel distributor testing and adjustment, warm-up regulator specifications, injector cleaning, and fuel pressure specs — critical reference material for keeping the original CIS injection system running correctly.
What format is the manual?
The manual is delivered as a searchable PDF file. After purchase you receive instant download access and can re-download at any time. Compatible with Windows, Mac, iOS, Android, and any device running a standard PDF reader.
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