Graco 312497F Manual De Usuario

fitting and slowly operate manual pump to verify 

location. If blockage is in this divider valve, go to 

step 7.

6.

Install manual pump into each indicator port of sec-
ondary divider valve in turn and slowly operate 
pump (F

. 13). If high pressure exists, blockage 

has been located. Look for crushed line, tight 
bearing, improperly drilled fittings and/or lube 
inlet port. Correct as necessary.

7.

Clean Divider Valve

NOTE: Dirt and foreign material will damage lubricating 
equipment. Perform all service and disassembly under 
the cleanest possible conditions.

a.

Before disassembling any divider valve, make a 
sketch noting the arrangement of Valve Sec-
tions. For example: INLET 10T - 20S - 10T - 
30S - END (F

IG

. 14). Also remove end plugs 

only and try to move each piston back and forth 
without removing the piston from the valve sec-
tion.

b.

If all pistons move freely and there is no indica-

tion of a more serious problem, replace end 

plugs. 

c.

Using a new gasket, tighten and torque as indi-

cated in Table 1 (page 11).

HAND PUMP

SYSTEM PUMP

MASTER
DIVDER
VALVE

SECONDARY
DIVIDER
VALVE

LUBE
OUTLET

INDICATOR PORT

PLUGS REMOVED

BEARING

LUBE OUTLETS

Do not insert hard metal objects into piston bore (i.e., 
punches, screwdrivers, etc.). Hard metal objects can 
damage the surface and cause divider valves to leak 
fluid. Use a brass rod and hand pressure only.

Inlet

10T

20S

10T

30S

End

. 1, page 3)

Tie Rod Nuts

12

5-8

23

6-9

12

Indicator Plugs*

6-7

15

8-9

18

12-15

6-8

End Plugs*

11-13

12-15

46

46-50

15

Valve Section 
Mounting Screw

-

-

8-9

-

12-13

-