Repair, maintenance and overhaul of marine engines and stationary diesel engines, including mobile on-site machining
Günther Wehrenberg GmbH
HamburgNew on Amplifa
About Günther Wehrenberg GmbH
Günther Wehrenberg GmbH is a Hamburg company based in Hamburg-Finkenwerder that has been active since 1970 in the field of repair, maintenance and overhaul of marine engines and stationary diesel engines. The business specialises in 4-stroke engines with power outputs from 20 kW to 12.500 kW and carries out work and assembly on cargo ships and salvage tugs under its own direction and responsibility. The 400 sqm workshop hall contains lathes and machine tools for machining cylinder heads, pistons and cylinder liners. In addition to stationary work, mobile on-site repairs are offered, including facing of cylinder head sealing surfaces, honing of cylinder liners in installed condition and digital crankshaft deflection measurements. Component overhauls follow the manufacturer's specifications; overhauled spare parts are supplied via the company's own spare parts shop. Deployment locations span the continents of Europe, Asia, Africa and America, and according to the website also Australia.
- Site
- Hamburg
- Processes
- Repair, maintenance and overhaul of marine engines and stationary diesel engines, Specialised in 4-stroke engines, Machining of cylinder heads, pistons and cylinder liners (lathes and machine tools), On-site facing of cylinder liner supports (mobile), Honing of cylinder liners in installed condition, On-site facing of cylinder head sealing surfaces (MAK M32, M43, MAN 40/54), On-site spindling of exhaust valve seat bores to oversize, On-site facing of piston skirts (MAN 40/54, 48/60, 58/64)
- Materials
- Machining, Mobile On-Site Machining, Digital Engine Diagnostics
- Certificates
- Testing with pressure test (10 bar water pressure, cooling water pressure test), Digital engine diagnostics (Premet C, Lemag DI-5)
- Founded
- 1970
- Employees
- 6
- Industries
- Shipping, Marine engines, Stationary diesel engines
- 01
Order intake and diagnostics (Premet C, crankshaft deflection measurement)
- 02
Disassembly and measurement of components
- 03
Machining rework (turning, facing, honing, valve seat machining)
- 04
Component overhaul according to manufacturer's specifications
- 05
Pressure and functional testing
- 06
Assembly on board or in the workshop
- 07
Delivery of overhauled spare parts via the spare parts shop
Services and Processes
Machining
Machining of cylinder heads, pistons and cylinder liners on lathes and machine tools in the company's own workshop hall.
Mobile On-Site Machining
Facing, honing and spindling of engine components in installed condition using portable Hunger equipment.
Digital Engine Diagnostics
Measurement of firing pressure, compression pressure and fuel injection timing with Premet C as well as crankshaft deflection measurements with Lemag DI-5 (90–560 mm).
Site
Hamburg
DEWorkshop and headquarters
- Materials
- Steel, cast (engine components)
- Lathes and machine tools for cylinder heads, pistons and cylinder liners
- Portable Hunger honing machine for MAN 32/40, 40/54, 48/60, 58/64
- Hunger valve seat milling machines
- Valve grinding machines
- Press stand for valve guide replacement
- Lemag Deflection Indicator DI-5 (measuring range 90–560 mm)
- Premet C engine diagnostics
Parts and Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Repair, maintenance and overhaul of marine engines and stationary diesel enginesAssembly | – | – | – | – | – |
| Specialised in 4-stroke enginesAssembly | – | – | 20 kW (power) – 12.500 kW (power) | – | – |
| Machining of cylinder heads, pistons and cylinder liners (lathes and machine tools)Machining | – | – | – | – | – |
| On-site facing of cylinder liner supports (mobile)Machining | – | – | – | – | – |
| Honing of cylinder liners in installed conditionSurface | – | – | – | – | – |
| On-site facing of cylinder head sealing surfaces (MAK M32, M43, MAN 40/54)Machining | – | – | – | – | – |
| On-site spindling of exhaust valve seat bores to oversizeMachining | – | – | – | – | – |
| On-site facing of piston skirts (MAN 40/54, 48/60, 58/64)Machining | – | – | – | – | – |
| Digital crankshaft deflection measurements (Lemag Deflection Indicator DI-5, measuring range 90–560Testing | – | – | – | – | – |
| Testing | – | – | – | – | – |
| Component overhaul according to manufacturer's specifications (pistons, cylinder heads, connectingAssembly | – | – | – | – | – |
| Surface | – | – | – | – | – |
| Testing of overhauled cylinder heads with 10 bar water pressureTesting | – | – | – | – | – |
| Assembly | – | – | – | – | – |
| Repair of exhaust valve housings (MAN 40/54, 48/60; Deutz 510, 645)Assembly | – | – | – | – | – |
| Overhaul of cooling water and oil pumps from all manufacturersAssembly | – | – | – | – | – |
| Overhaul of charge air coolers incl. cooling water pressure testTesting | – | – | – | – | – |
| Delivery of overhauled spare parts (spare parts shop)Assembly | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Lathes and machine tools for machining cylinder heads, pistons and cylinder liners | – | – | – | – | 400 sqm workshop hall, Hamburg-Finkenwerder |
| Portable honing machine | Hunger for engine types MAN 32/40, 40/54, 48/60, 58/64 | – | – | – | – |
| Valve seat milling machines | Hunger | – | – | – | – |
| Valve grinding machines | Hunger | – | – | – | – |
| Digital crankshaft deflection measuring device | Lemag Deflection Indicator DI-5, measuring range 90–560 mm | – | – | – | – |
| Digital engine diagnostics | Premet C | – | – | – | – |
| Press stand (valve guide replacement) | – | – | – | – | – |
Additional services
Quality and Inspection Equipment
Overhauled cylinder heads are tested with 10 bar water pressure, charge air coolers are subjected to a cooling water pressure test according to the manufacturer's specifications. Measurement of valve seats, valves, valve guides and connecting rods is carried out according to manufacturer's specifications.
| Evidence | Hamburg |
|---|---|
| Testing with pressure test (10 bar water pressure, cooling water pressure test) | |
| Digital engine diagnostics (Premet C, Lemag DI-5) |
History
- 1970
Start of operations in the field of repair, maintenance and overhaul of marine engines and stationary diesel engines