Perkins New 1000 Series, Workshop Manual, Page: 75 / 290

Workshop Manual, TPD 1350, issue 3 75
13
New 1000 Series
Connecting rod
To inspect 13-9
1 Check the small end bush for wear or for other
damage and renew it, if necessary.
Note: Connecting rod kits are available with a new
small-end bush fitted and finished to the correct
grade
, see operation 13-7 to identify the correct
connecting rod grade.
A partially finished small end bush, which can be fitted
to the original connecting rod and machined to obtain
the correct length grade is also available
, see
operation 13-10 .
2 Check the connecting rod for distortion (A). Use the
data and dimensions, in the workshop manual, to
identify the correct mandrel sizes.
Note: The large and small end bores must be square
and parallel with each other within the limits of +/- 0,25
mm (0.010 in) measured 127 mm (5.0 in) each side of
the connecting rod axis on a test mandrel. With the
small end bush fitted, the limits are reduced to +/- 0,06
mm (0.0025 in).
3 Check the fit of the gudgeon pin in the small end
bush and check the gudgeon pin for wear, see the
data and dimensions.
Partially finished small end bush
To remove and to fit 13-10
1 Press out the old bush with a suitable adaptor.
2 Clean the parent bore of the connecting rod and
remove any sharp edges.
3 Press in the partially finished bush. Ensure that the
lubrication hole in the bush is on the same side as,
and is aligned with, the hole in the top of the
connecting rod.
Caution: Do not use a reamer, specialist equipment
and personnel with the correct training are needed to
machine the partially finished small end bush. For
further information refer to your nearest Perkins
distributor.
4 Machine the partially finished bush. To obtain the
correct connecting rod grade
, see operation 13-7 , see
the data and dimensions.
To obtain the correct clearance between the gudgeon
pin and the bush, refer to the data and dimensions in
the workshop manual.
Note: The small end is wedge shaped. After the
small end bush has been fitted, machine the bush to
the shape of the small end and remove any sharp
edges.
Caution: Do not use a letter stamp to mark the
connecting rod.
5 Check that the grade letter on the connecting rod is
correct, if necessary, delete the letter and etch a new
letter on to the side of the rod.
A
G0009A
L±0.25mm
(0.010in) L±0.25mm
(0.010in)
127mm
(5in) 127mm
(5in)
Purchased from www.WorkshopManuals.co.uk