Perkins 4.99 - Oil Pump Assembly and Refitting; Re-assembling and Refitting the Oil Pump

LUBRICATION SYSTEM-LA
L7
NOTE: The relevant clearances for these dimen-
sional checks are given on Page B.10, they are the
clearances applicable to a new pump and are in-
tended to be used as a guide. Should a lubricating
oil pump be worn to such an extent that it ad-
versely effects the working oil pressure, then a re-
placement pump should be obtained.
To Re-Assemble the Oil Pump
1. Insert the outer rotor ensuring that the face which
carries the chamfered edge enters the pump body
first. (Refer Fig. L.5).
L8
L9
1. Outlet to Main Oil Filter
2. Relief Valve Plunger
3. Plunger Spring
4. Spring Cap
5. Retaining Splitpin
2. Insert the drive shaft complete with inner rotor
into the pump body.
3. Replace the end cover assembly and fit the four
securing setscrews. Ensure correct positioning so
that the suction and delivery pipes will locate
correctly.
4. Press the oil pump drive gear onto the shaft.
5. Finally rotate the pump by hand to ensure that it
turns quite freely.
To Rem the Oil
1. Prime the lubricating oil pump with clean lubricating
oil.
2. Refit the suction and delivery pipes, do not tighten
the pipes at this stage.
3. Place the lubricating oil pump assembly in position,
locate with the securing screw and lock it with the
tab washer.
4. Tighten the delivery pipe at both ends, refit the
setscrew securing the suction pipe assembly.
5. Tighten the suction pipe at the pump end then
refit the strainer on the end of the suction pipe.
NOTE:
The strainer which fits on the end of the
suction pipe should be thoroughly cleaned in a suit-
able cleaning fluid before being refitted. It is
good practice to remove this strainer and clean it
thoroughly on every occasion when the sump is
removed.
6. Replace the sump as previously detailed and
secure with the setscrews.
7. Fill the sump to the correct level with clean oil
of an approved grade.