Jacobsen SXG323, Service Manual

Page: 80 / 230

CHAPTER 7. FUEL SYSTEM
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7
3) Control rack
Replace a control rack which is bent or has abnormally
worn teeth.
Fig. 7-14
NOTE: Never change the combination of each plunger
and plunger barrel.
15) The sleeve flange can be removed with a special
tool. But do so only when required.
When a sleeve flange has been removed, take the
assembled pump to a specialist and have it checked
for functioning and adjusted before installing it on
the engine.
2.3. INSPECTION
1) Pump housing
Check the pump housing for cracks, wear, or damaged
screw threads. If defective, replace the housing.
2) Tappets
Fig. 7-16
4) Replace a control sleeve whose recess, where the
brim of the plunger or the ball of PFR-MD type is to
be seated, is abnormally worn.
5) Plunger assembly
兟
When the notched part in the plunger is damaged, dis-
colored, or worn, replace the assembly of the plunger
and plunger barrel.
Replace a tappet whose roller and roller pin have any
damage, abnormal wear, exfoliation, seizure, etc.
Fig. 7-17
兟
After washing well in clean fuel, place the assembly
slanted at 60° and then pull up the plunger. When the
plunger comes down without any hitch, the assembly
is normal.
Fig. 7-15