When an engine is received, it is first cleaned to get rid of major dirt such as sand, mud and oil, which has built up on the engine over the years. This ensures that our mechanics are able to further disassemble the engine in ideal conditions, which in-turn enables them to proceed to chemical cleaning using our specially-designed machines.

When an entire engine is disassembled, a general check takes place to establish the main components in the engine. These main components are normally not replaced during a revision due to the price. In most cases these main components can be repaired/revised, thus allowing them to be re-used.

The crankshaft is first examined visually to see if any of the numerous bearings are damaged. Once these bearings are considered to be satisfactory, we make sure that the crankshaft is checked mechanically for hair-line tears, which are also known as “fluxes”.

The crankshaft is fitted to 2 large current conductors and a fluid, which contains small magnetic particles, is poured over the crank shaft. If a particular current is passed through the crankshaft, the liquid works itself into small openings and can be viewed under ultra-violet light.

This machine is used to check general wear on main and driving-rod bearings. Maximum wear values have been established for this purpose, and are strictly adhered to.

When the crankshaft is considered satisfactory, we start work on the engine block. Naturally, this is first checked visually for cracks or other damage.

The block is then attached to our alignment bench, where we check if the crankshaft and the camshaft are still 100% aligned. If we discover imperfect alignment, this can be repaired in the majority of cases.

The final part of the checking procedure involves checking the engine block for evenness - evenness is very important when the cylinder head is remounted to the engine block. If irregularities are present, this could lead to leaks or some form of compression loss.
In many cases, the engine block must be re-levelled in order to realise 100% evenness.
We possess a specially-designed levelling machine which ensures that a minimum amount of material is lost, while still resulting in perfect alignment.
This specially-designed machine is able handle various engine sizes, which vary from 4 – 6 cylinders to V6-V8-V10-V12 or even V16 engines.

The cylinder head is another major component in the engine block.

By using this standard checking procedure we avoid potential leaks in the cylinder head, as well as other problems like pressure build-up and water leakage in pistons. The cylinder head is then revised and fitted with new parts.

• Valves
• Valves seats
• Valves guides
• Valves caps

After comprehensive revision, it is also important to re-level the cylinder head to realise perfect passage. By levelling the cylinder block and the engine block, we avoid risks and ensure that there is 100% compatibility with the original set-up in the concerned channels.

Before mechanics start mounting the various parts, the parts must be thoroughly cleaned. At the start of the process, most dirt is washed off by our thermal washing machines, though rust and irregularities are still present on various parts.
We use a very large “spraying machine” which ensures that parts are fully cleaned.

For the past 2 years, we have been contracting fuel-pump activities to the largest manufacturer of fuel pumps in the world, namely “BOSCH”. However, for many years HAMOFA was itself responsible for fully revising and repairing fuel pumps.
However, due to major advances in this fuel technology, it is nigh on impossible to keep new and specialised machines up-to date. Thus HAMOFA has decided to forge a partnership with BOSCH.
We supply the fuel pumps to one of the 12 official BOSCH centres in the BENELUX, one of which is located within 5km. The people at the centre ensure that the fuel pump is fully disassembled and examined. They then renew standard parts like pressure valves, pressure springs, casings etc. The regulator is also opened and re-calibrated.
The fuel pump is then tested on a testing bench, to determine if the fuel pump supplies the required content and performs its job effectively.  
The partnership with BOSCH also allows us to keep a close eye on the latest technologies.

These components can be reconditioned as well. It is very important for the staring motor and alternator to work correctly. If a fully-revised diesel engine is installed in a machine, and a starter or alternator does not work as required, this could lead to unnecessary malfunction. This is why HAMOFA has made it standard practice to “exchange” these parts with BOSCH. The old parts are sent to them and we immediately receive the new “exchange” parts.

When HAMOFA revises a turbo engine, quality checks take place during the disassembly. If our mechanics have doubts about the reliability of the turbo, we make sure it is renewed or revised.

If an engine has been fully revised by our company, it is tested once the entire revision process is complete. We have a specially-equipped testing area to test-run engines.
We are able to run engines at specific loads in order to examine whether the engine performs its job effectively. The test involves checking all key details, such as oil pressure, oil temperature, water temperature, thermostat, etc.

Once the engine has undergone all these procedures, and good results have been realised, it will be readied for delivery.