 |
|
 |
 |
|
 |
|
| 1. |
Always understand why the
original turbocharger needs replacing, determine the cause of any failure
and rectify it before fitting a replacement unit.  |
|
|
|
| 2. |
Each Holset
turbocharger is designed to match a specific engine and is given
a part number and individual serial number. Please ensure the
part number shown on your turbocharger dataplate is the correct
number for your engine. This is shown in the engine manufacturer's
specification listings. The warranty will be invalid if the
turbocharger is fitted to the wrong engine (Figure 1). |
 |
| Figure 1 |
|
|
|
|
| 3. |
Check
that the engine intake/exhaust and aftercooler systems are clean
and without obstruction (free from oil, gasket pieces, dust,
dirt, carbon or other debris). Replace air filter if necessary,
using only OEM recommended parts (Figure 2). |
 |
| Figure 2 |
|
|
|
|
| 4. |
Check
that the oil inlet and oil drain flanges are clean and free
from obstruction, internal carbon and sludge (removing to clean
if necessary). If in doubt, replace with new (Figure
3). |
 |
| Figure 3 |
|
|
|
|
| 5. |
Replace the oil and filter, ensuring that only OEM recommended
parts and specified oil are used (Figure 4). |
 |
| Figure
4 |
|
| |
|
| 6. |
Check
that the exhaust mounting flange and studs are in good condition
(free from cracks and debris). If in doubt, replace with new (Figure
5). |
 |
| Figure 5 |
|
|
|
|
| 7. |
Mount
the turbocharger on the exhaust flange and check that the turbine
inlet gasket fits correctly to give a gas tight seal. |
|
|
|
| 8. |
The orientation
of the end housings may need changing in order to align correctly
with all other connections. If so, ensure all fastenings are
tightened to the specified torque (see accompanying data) when
the correct attitude is set. In the case of Holset HC5A, HX80/82/83/85
ensure lockplate tabs are secured against the bolt heads. The
orientation cannot be altered on Holset HY40V, HY50V, HE431VE, HE431V, HE531V, HE351CW and HE351V. |
|
|
|
| 9. |
Connect
the oil drain pipe then fill the turbocharger oil feed hole
with clean engine oil and slowly rotate the rotor by hand (Figure
6). |
 |
| Figure 6 |
|
|
|
|
| 10. |
Connect
all external fittings to the turbocharger. Pull out the fuel
stop and crank engine to develop oil pressure. |
|
|
 |
| 11. |
Start the engine
and idle checking that all air, gas and oil connections are tight and
free from leakage. If necessary tighten any fastenings as appropriate,
using soapy water to help detect gas leaks (Figure 7). |
 |
| Figure 7 |
|
|
 |
 |
 |
 |
Turbochargers can be hazardous when not used
as 
