Perkins New 1000 Series, Workshop Manual, Page: 175 / 290

Workshop Manual, TPD 1350, issue 3 175
19
New 1000 Series
To dismantle and to assemble 19-10
If necessary, the relief valve can be dismantled and
assembled while it is fitted to the engine.
1 Apply pressure to the end plate (A4 or B5) of the
spring assembly; release the circlip (A5) or remove
the pin (B1) and carefully release the pressure to
remove the end plate and the spring (A3 or B4) from
the valve body. Remove the plunger (A2 or B3) from
the bore of the body (A1 or B2).
2 Ensure that all the components are cleaned and
then lubricated lightly with clean engine lubricating oil.
3 Fit the plunger into the bore with its hollow end to
the inside. Fit the spring and the end cap into the bore
with the ends of the spring fitted around the bosses of
the plunger and the end plate. Apply pressure to the
end plate and fit the circlip into its groove or fit the pin
into the holes in the balancer frame.
To inspect 19-11
Do not try to change the operation pressure of the
relief valve by a method other than the installation of
new components.
1 Check the spring for wear and other damage and,
if possible, check the load necessary to compress the
spring to its fitted length, see the data and
dimensions.
2 Check the plunger for wear and other damage and
ensure that it slides easily in the bore of the relief
valve.
3 Check the body and the end plate for wear and
other damage.
4 Renew worn or damaged components.
2
1
3
4
5
A
A0239
5
4
3
2
1
B
A0240
Purchased from www.WorkshopManuals.co.uk