Graco 258262, Операция, обслуживание и запчасти, Страница: 9 / 16

Service
311842G 9
2. If items listed in step 1 are not the cause, check the
pump assembly. The following items should be
checked before removing the pump assembly from
the cover.
• Check the sight glass for inward leakage due to
a crack in the sight glass, improper sight glass
seating, or a defective o-ring. Repair as
required (F
IG
. 6, page 6).
• Check for an obstruction in the drip tube and
remove if found.
• If these steps do not isolate the malfunction:
a. Relieve system pressure , page 8.
b. Disconnect the discharge tubing (E) (F
IG
. 10).
c. Remove 4 screws (F) holding pump to cover
(F
IG
. 10).
d. Remove the pump assembly (G) (F
IG
. 10).
NOTE:
• Keep a spare pump on hand for use during
emergencies and when the pump is being
repaired.
• If a spare pump is available, it will not be nec-
essary to stop the equipment the lubricator is
installed on or to empty the reservoir.
• If the sight glass fills with lubricant proceed as
follows:
a. Remove system pressure , page 8.
b. Remove vent plug (A) (F
IG
. 11).
c. Allow the lubricant to pump down to the
proper level.
d. Replace vent plug (A).
The pump should operate normally.
MOVING PARTS HAZARD
Exercise extreme care if equipment is operating.
Rotating equipment can cause serious injury.
F
IG
. 10
E
F
G
F
IG
. 11
A