Perkins New 1000 Series, Workshop Manual, Page: 151 / 290

Workshop Manual, TPD 1350, issue 3 151
18
New 1000 Series
To clean the impeller and the
compressor casing
18-2
Generally, it is not necessary to remove the
turbocharger to remove the compressor casing,
except on some engines where the compressor
casing is held by a circlip and access to the circlip is
not always possible. This type of turbocharger is
usually fitted to engines used in vehicle applications.
1 Release the clip and remove the hose from the
compressor inlet. Release the clips and push the
hose on the compressor outlet up the elbow of the
induction manifold.
2 Make a reference mark on the compressor casing
(A1) and on the bearing housing to ensure correct
assembly later.
3 Release the setscrews and remove the lock plates.
If the compressor casing is retained by a circlip,
remove the circlip. It may be necessary to remove the
turbocharger if access to the circlip is not possible. If
the turbocharger has a waste-gate unit, remove the
actuator and bracket assembly
, see operation 18-3 .
Caution: Be careful not to damage the impeller
blades. If the impeller is damaged, the turbocharger
must be renewed.
4 Remove carefully the compressor casing from the
turbocharger (A). If the casing is tight, lightly hit it with
a soft faced hammer.
5 Put the compressor casing in a suitable container
that contains a non-caustic solution. Allow the dirt to
become soft and then clean the casing with a hard
brush and/or a soft scraper. Dry the casing with clean,
compressed air at low pressure.
6 Clean the impeller with a soft brush.
7 Push carefully the compressor impeller towards the
bearing housing and turn the impeller by hand. Check
that there is no restriction of movement and that there
is no noise which can indicate a fault. If there is a fault,
remove the turbocharger for inspection by a
specialist.
8 Fit the casing to the turbocharger and align the
mark on the casing with the mark on the bearing
housing. Fit the lock plates and the setscrews and
tighten the setscrews.If the compressor casing of the
turbocharger is retained by a circlip, fit the circlip
loosely to the bearing housing. Ensure that the flat
face of the circlip is toward the compressor casing. Fit
the casing to the turbocharger and align the marks on
the casing and on the bearing housing. Fit the circlip
in its groove. If the turbocharger has a waste-gate
unit, fit the actuator and bracket assembly
, see
operation 18-3 .
9 Fit the hoses to the compressor inlet and outlet and
tighten the clips.
10 If necessary, fit the turbocharger to the engine ,
see operation 18-1 .
1
A
A0183
Purchased from www.WorkshopManuals.co.uk