Graco Scuba Diving Equipment 312497G User Manual

Instructions  
Trabon  
Divider Valves  
312497G  
EN  
For series progressive, oil and grease lubrication. For Professional Use Only.  
Important Safety Instructions  
Read all warnings and instructions in this  
manual. Keep these instructions.  
Models/Maximum Pressure  
Table 1: Maximum Pressure Lube Points  
Table 2: MGO Series-Flo Divider Maximum  
Operating Pressures  
Maximum  
Operating  
Maximum Operating  
Pressure kPSI  
(MPa, bar)  
Maximum  
Sections  
Pressure kPSI (MPa, bar) Number of Sections  
Divider Type  
MD  
6.0 (41.4, 414)  
5.5 (37.9, 379)  
4.0 (27.6, 276)  
4.5 (31.0, 310)  
4.0 (27.6, 276)  
3 to 7  
8
3.0 (20.7, 207)  
2.0 (13.8, 138)  
3.5 (24.1, 241)  
7.5 (51.7, 517)  
3.0 (20.7, 207)  
3.0 (20.7, 207)  
See Table 2  
2
8
8
MJ/MJSS  
MSP  
9
10  
11  
8
MHH  
10  
10  
11  
MX  
MXP  
MGO  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Setup  
Component Identification  
Setup  
Inlet  
Section  
The divider valve is shipped ready to install in your sys-  
tem. It has been factory-tested and should not require  
any additional modification.  
Valve  
Section  
NOTICE  
Indicator/ Port Plug  
Do not install a divider valve into a system rated for  
more than the valve’s maximum operating pressure.  
This type of installation could result in o-ring damage  
and cause the divider valve to leak.  
Crossport  
Plate  
End Plug  
Subplates with  
Output Ports  
To install the divider valve in your system:  
1. Determine an appropriate, remote mounting loca-  
tion.  
End  
Section  
2. Install a rupture to atmosphere fitting with a blow-out  
disk that is rated for 7,500 psi or less between the  
force feed lubricator pump and master divider valve  
inlet.  
TI11117  
Tie Rod Nut  
3. Install an analog pressure gauge at the inlet to the  
divider valve.  
FIG. 1  
Table 3: Typical Divider Valve  
Combinations  
4. Install a slow or no cycle shutdown in one of the pis-  
ton enclosure plugs. Program it to shut down after  
no more than 180 seconds without a complete  
cycle.  
TYPE OF  
APPLICATION  
MASTER SECONDARY  
5. Torque. See Table 4 on page 15.  
MJ  
MD  
Machine tools, Printing,  
Wire Forging &  
As long as lubricant is supplied under pressure to the  
inlet section of the divider assembly, valves sections will  
continue to operate in a progressive manner. Divider  
assemblies always follow a constant discharge pattern.  
Whenever lubricant flow ceases, the valving pistons will  
stop. When flow resumes, it will start again at the same  
point in the discharge cycle.  
Packaging Machinery  
MSP  
MJ, MSP  
Machine tools, Textile,  
Glass & Can Machinery,  
Mobile Equipment  
MX, MXP  
MGO  
MX, MXP, MSP  
MX  
Cranes, Presses, Steel  
Mills, etc.  
Levellers, Shears,  
Conveyors, etc.  
Divider Valves  
A Series-Flo type divider valve is a manifold proportion-  
ing device consisting of an inlet and end section plus a  
minimum of three valve sections. The divider valve is  
manifolded together with tie rods and nuts. A master  
divider valve is the first divider valve downstream from  
the lube pump. A secondary divider valve is any divider  
valve receiving lubricant from the master divider valve.  
312497G  
3
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Setup  
Valve Sections (MSP, MHH and MXP  
modular-type, divider valves, only)  
Prefilling Lubricant Distributor Lines  
Follow the following procedure exactly as written, in the  
order written.  
Valve sections (three or more required per manifold)  
contain a piston specially fitted to that section, built in  
outlet check valves and various passageways that,  
working with the piston, meters and valves the flow of  
lubricant (FIG. 2).  
NOTICE  
The initial startup and operation is the most critical  
operating period for a newly installed machine in  
terms of potential for being damaged by unre-  
moved/unfiltered lubricant contaminants and lack of  
adequate lubrication. Proper prefilling of lubrication  
system ensures that lubricant is immediately avail-  
able to every lube point during machine startup,  
protecting them from damage.  
Piston  
Enclosure/End  
Plug  
Enclosure Plug Gasket  
O-Rings  
Piston  
Use only clean oil filtered to the SAE -recom-  
mended cleanliness level of ISO 18/14 (ISO Stan-  
dard 4406) when prefilling a system. The  
manufacturers of the machine tool and its compo-  
nent bearings should be consulted to ensure that  
the ISO 18/14 cleanliness level is adequate.  
Check  
Valve  
TI11102  
Indicator  
Port  
Indicator Port Plug  
FIG. 2  
Filling Secondary-to-Lube Point Lines  
Valve sections may be manufactured to require one or  
two lube outlets. Stamping located on the face of each  
section indicates:  
Refer to FIG. 3. when performing this procedure  
.
the style of divider valve section, i.e., MSP, MX,  
etc.,  
the discharge per piston stroke expressed in  
LUBE POINT  
3
thousandths of cubic inches (35 = .035 in )  
BLEED HOSE  
HERE  
and,  
SECONDARY  
MASTER  
REMOVE INDICATOR  
the number of lube outlets required (S = single,  
one outlet only; T = twin, two lube outlets  
required).  
OR PORT PLUG  
TI11098  
HAND PUMP  
FIG. 3  
1. Remove port plugs or performance indicators from  
all of the indicator ports on front of secondary  
divider valves.  
2. Connect a hand pump filled with clean, filtered lubri-  
cant to the indicator port closest to the first line to be  
filled that corresponds to the output port that is feed-  
ing the line to be filled.  
4
312497G  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Setup  
3. In order to verify when lubricant is flowing and has  
reached the end of the lube line, loosen the connec-  
tor at the lube point of the line that is to be filled.  
4. Continue to stroke the pump until the lubricant  
purges all the air out of the internal passages of the  
secondary divider valve and lubricant flows freely  
from all indicator ports with no evidence of included  
air.  
4. Stroke the hand pump until air-free lubricant is  
observed flowing from the end of the lube line.  
5. Reinstall the port plugs or performance indicators in  
their respective positions in the secondary divider  
valve. Do not replace the port plugs or performance  
indicators in the master divider valve yet.  
5. Tighten the lube line connector at the lube point, but  
do not replace the port plugs or performance indica-  
tors into the ports on the front of the working sec-  
tion.  
6. Repeat Steps 1-5 for each of the other lube lines  
between the master divider valve and all other sec-  
ondary divider valves.  
6. Repeat steps 1-5 for each of the other lube lines  
connected to the other outlet ports in the secondary  
divider valve assembly and for any other secondary  
divider assemblies in the system.  
NOTE: Do not replace any of the performance indicators  
or port plugs removed in Step 1 from the master divider  
valve assembly until the air-purging procedure  
described in Section 3 (Filling Master Divider Valve) has  
been completed.  
NOTE: Do not replace any of the performance indicators  
or port plugs removed in Step 1 until the line-filling pro-  
cedure described in Section 2 (Filling Master -to-Sec-  
ondary Lube Lines) has been completed.  
Filling Master-to-Secondary Lube Lines  
Refer to FIG. 4. when performing this procedure.  
LUBE POINT  
SECONDARY  
BLEED  
THROUGH  
MASTER  
ALL PORTS  
REMOVE INDICATOR  
OR PORT PLUG  
TI11099  
HAND PUMP  
FIG. 4  
1. Remove the port plugs or performance indicators  
from all the indicator ports on the front of the master  
divider valve.  
2. Connect a hand pump filled with clean, filtered lubri-  
cant to the indicator port closest to the lube output  
port that is feeding the line to the secondary divider  
valve.  
3. Stroke the hand pump to fill the line between the  
master divider valve and secondary divider valve.  
312497G  
5
Download from Www.Somanuals.com. All Manuals Search And Download.  
Setup  
Filling Master Divider Valve  
Refer to FIG. 5. when performing this procedure.  
LUBE POINT  
SECONDARY  
MASTER  
BLEED  
HERE  
CYCLE PUMP  
TI11000  
FIG. 5  
1. Verify that all port plugs or performance indicators  
have been removed from all indicator ports in the  
master divider valve.  
2. Verify that the system pump is properly connected  
to the inlet port of the master divider valve.  
3. Cycle the system pump sufficiently to fill the main  
feeder line between the pump and the master  
divider valve and the lubricant is observed being  
discharged from all of the indicator ports on the front  
of the master divider valve with no evidence of  
included air.  
4. Reinstall the master divider valve port plugs or per-  
formance indicators into their respective positions.  
6
312497G  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Repair  
Repair  
General Repair Instructions  
Purging Air From the System  
Before machine operation is resumed following mainte-  
nance or repair, manual system air purging must be per-  
formed.  
Before performing any repair procedures, relieve  
pressure, page 2.  
There are several air purging procedures available  
depending upon the maintenance or repair procedure.  
Pressure test distribution blocks yearly or every  
8000 hours. Replace seals and divider valves as  
necessary.  
NOTE: Use only clean oil filtered to the SAE -recom-  
mended cleanliness level of ISO 18/14 (ISO Standard  
4406) when prefilling a system. The manufacturers of  
the machine tool and its component bearings should be  
consulted to ensure that the ISO 18/14 cleanliness level  
is adequate.  
Page  
Section  
Air purging after:  
8
9
1
2
Replacing line between a secondary divider valve and lube point.  
Replacing a line between the master divider valve and a secondary  
divider valve.  
11  
3
4
5
Replacing a line between pump and master divider valve.  
Adding or replacing any component in a master divider valve assembly.  
Adding or replacing any component in module in a secondary divider  
valve assembly.  
312497G  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
Repair  
Section 1: Purging Air from Secondary Divider Valve Lube-to-Lube Point Lines  
LUBE POINT  
BLEED HOSE  
SECONDARY  
HERE  
MASTER  
REMOVE INDICATOR  
OR PORT PLUG  
HAND PUMP  
TI11098  
FIG. 6  
Steps 1-6, refer to FIG. 6.  
1. Install the line from the secondary divider valve to  
the lube point, but do not completely tighten the  
connection at the lube point.  
2. Remove the performance indicator port plug or the  
performance indicator from the working valve sec-  
tion on the secondary divider valve assembly corre-  
sponding to the outlet port and the line connected to  
the lube point.  
3. Attach a hand pump filled with clean, filtered lubri-  
cant to the port on the secondary divider valve that  
was opened in Step 2.  
4. Operate the hand pump until air-free lubricant is  
observed flowing from the line at the lubrication  
point.  
5. Tighten the fitting at the lubrication point while lubri-  
cant is still flowing.  
6. Remove the hand pump and reinstall the perfor-  
mance indicator or indicator port plug removed in  
Step 2.  
NOTE: If check valves were not installed at the lubrica-  
tion point, lubricant may continually drain out of the line  
when the secondary port is open. Therefore, when  
check valves are not used, the method for bleeding this  
line is to tighten the line at both ends and repeatedly  
cycle the secondary divider valve via hand pump opera-  
tion until lubricant, free of air, flows from the lubrication  
point  
8
312497G  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Repair  
Section 2: Purging Air from Master to Secondary Divider Valve Lube Lines  
LUBE POINT  
BLEED HERE  
FIRST  
SECONDARY  
MASTER  
REMOVE INDICATOR  
OR PORT PLUG  
AFTER BLEEDING INLET,  
REMOVE ALL INDICATORS  
OR PORT PLUGS AND BLEED  
ALL PORTS  
HAND PUMP  
TI11113  
FIG. 7  
Steps 1- 9, refer to FIG. 7.  
5. Tighten the fitting at the secondary valve’s inlet  
while lubricant is still flowing.  
1. Install the lines from the master divider valve to the  
secondary divider valve, but do not completely  
tighten the connection at the secondary divider  
valve’s inlet.  
6. Remove all of the indicators or indicator port plugs  
from the secondary divider valve’s working sections.  
7. Operate the hand pump again until air-free lubricant  
is observed flowing out of all the secondary divider  
valve’s indicator ports.  
2. Remove the performance indicator port plug or the  
performance indicator from the working valve sec-  
tion on the master divider valve assembly corre-  
sponding to the outlet port and the line connected to  
the secondary valve.  
8. Reinstall all of the performance indicators or port  
plugs in the secondary divider valve while lubricant  
is still flowing from the ports.  
3. Attach a hand pump filled with clean, filtered lubri-  
cant on the master divider valve that was opened in  
Step 2.  
9. Remove the hand pump and reinstall the perfor-  
mance indicator or indicator plug removed in Step 2  
into the master divider working valve’s open port.  
4. Operate the hand pump until air-free lubricant is  
observed flowing freely from the secondary valve’s  
lube inlet connector.  
The system is now ready for operation.  
312497G  
9
Download from Www.Somanuals.com. All Manuals Search And Download.  
Repair  
Section 3: Purging Air from Pump to Master Divider Valve Lines  
LUBE POINT  
SECONDARY  
MASTER  
BLEED THROUGH  
ALL PORTS  
TI11114  
SYSTEM PUMP  
FIG. 8  
Steps 1-3, refer to FIG. 8.  
1. Install the line from the system pump to the master  
divider valve, but do not completely tighten the con-  
nection at the master valve’s lube inlet.  
2. Cycle the system pump until air-free lubricant is  
observed flowing from the line at the master divider  
valve’s lube inlet.  
3. Tighten the fitting at the lube inlet port while lubri-  
cant is still flowing.  
The system is now ready for operation.  
10  
312497G  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Repair  
Section 4: Purging Air After Adding or Replacing a Master Divider Valve Module  
LUBE POINT  
SECONDARY  
BLEED  
HERE  
DISCONNECT  
LINE  
MASTER  
HAND PUMP  
NEW VALVE  
BLOCK  
TI11116  
FIG. 9  
Steps 1-7, refer to FIG. 9.  
1. Install the new or replacement module into the mas-  
ter divider valve assembly. Also connect the tubing  
or hoses to the appropriate secondary divider  
valve(s) or lubrication point(s) if the new/replace-  
ment module is a base section.  
5. Operate the hand pump until air-free lubricant is  
observed flowing from each secondary valve’s lube  
inlet connector and/or each lubrication point’s con-  
nector.  
6. Tighten the fitting at the secondary valve inlet or at  
the lubrication port while lubricant is still flowing.  
2. Do not completely tighten the connection(s) at the  
secondary divider valve’s inlet or at lubrication  
points.  
7. Remove the hand pump and reconnect the system  
pump to the inlet of the master divider valve.  
3. Disconnect and remove the line from the pump at  
the inlet of the master divider valve.  
The system is now ready for operation.  
4. Attach a hand pump filled with clean, filtered lubri-  
cant to the inlet port on the master divider valve.  
312497G  
11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Repair  
Section 5: Purging Air After Adding or Replacing a Secondary Divider Valve Module  
BLEED HOSE  
HERE  
LUBE POINT  
SECONDARY  
MASTER  
BLEED  
HERE  
NEW VALVE  
BLOCK  
REMOVE INDICATOR  
OR PORT PLUG  
HAND PUMP  
TI11115  
FIG. 10  
Steps 1-8, refer to FIG. 10.  
1. Install the new or replacement module to the sec-  
ondary divider valve assembly. Also connect the  
tubing or hoses to the appropriate lubrication point if  
the new/replacement module is a base section.  
5. Operate the hand pump until air-free lubricant is  
observed flowing from the loosened connector at  
the lube point.  
6. Tighten the fitting at the lube point while lubricant is  
still flowing.  
2. Do not completely tighten the connection(s) at the  
lubrication point.  
7. Repeat Steps 3 - 6 for any additional lubrication  
points connected to the new module.  
3. Remove the performance indicator or indicator port  
plug from the working valve section on the second-  
ary divider valve assembly corresponding to the out-  
let port and line connected to a particular lube point.  
8. Remove the hand pump and reinstall the perfor-  
mance indicator or port plug removed in Step 3 into  
the secondary divider valve’s open port.  
4. Attach a hand pump filled with clean, filtered lubri-  
cant to the port on the secondary divider valve that  
was opened in Step 3.  
The system is now ready for operation.  
12  
312497G  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Repair  
Rupture Indicator  
Locating and Repairing  
Blockages  
Blocks will cause a higher than normal pumping pres-  
sure. Depending on the application or system design,  
this blockage will usually result in a complete loss of  
lubricant flow into the total system and no bearing will be  
receiving lubrication.  
Rupture indicators are used on MSP/MH divider valve  
applications where lube system pressure exceed 2500  
psi. The high pressure from the lube line blockage  
causes a disc to rupture. The lubricant then forces an  
indicator to protrude, locating the blockage. The high  
pressure backs up through the system and trips a switch  
to shut the system off. When the fault is corrected, the  
disc must be replaced and the pin reset manually.  
The loss of flow due to a blockage is first indicated with  
the higher than normal system pressure that is devel-  
oped by the pump as it attempts to overcome this block-  
age. Higher pressure is limited, isolated and signaled  
through the use of various performance indicators, reset  
and relief, incorporated into the system design.  
Automatic Relief Indicator  
An automatic relief indicator pinpoints lube line blockage  
but allows the lube system to continue supplying lubri-  
cant to points that are not blocked. They are used pri-  
marily in secondary divider valves. The excessive  
pressure created by line blockage moves a piston,  
enabling the lubricant to escape through a vent. When  
the pressure is relieved, the spring resets the piston.  
Because these devices permit the lube system to keep  
operating when a lube point is blocked, a separate pres-  
sure switch connected to an audible alarm should be  
used to warn of high pressure.  
Performance Indicators  
Performance indicators are pressure-sensitive devices  
that pinpoint excessive pressure in the lubricating sys-  
tem.  
These devices are installed in the indicator ports of  
divider valves, signal a fault either by causing an indica-  
tor pin to protrude or by releasing lubricant into the  
atmosphere.  
Locating and Repairing Blockages  
1. Make a visual inspection of the system. Check for  
crushed lines or improper divider valve installation.  
NOTE: Never block a lube outlet that is designed to dis-  
charge lubricant.  
2. Verify that each divider valve outlet required to dis-  
charge lubricant can do so and that no pipe plugs  
have been installed in an outlet designed to serve a  
bearing or another divider valve.  
Reset Indicator with Memory  
Reset indicators stop lube system operation when a  
fault occurs. These devices can be used in either master  
or secondary divider valves.  
3. Use a manual pump with a gauge. Fill the pump with  
clean, filtered lubricant. Connect the manual pump  
to the inlet of the master divider valve and slowly  
operate pump. If system will not cycle freely, below  
1500 psi, see Master Divider Valve Equipped with  
Performance Indicator [Step 4a (below)].  
When a lube line becomes blocked, the resultant high  
pressure pushes the indicator pin through the opening in  
the cap. The high pressure prevents the affected divider  
valve piston from completing its cycle, causing a pres-  
sure backup through the divider valve which trips a pres-  
sure switch upstream from the valve and shuts off the  
pump.  
NOTE: Use only clean oil filtered to the SAE -recom-  
mended cleanliness level of ISO 18/14 (ISO Standard  
4406) when prefilling a system. The manufacturers of  
the machine tool and its component bearings should be  
consulted to ensure that the ISO 18/14 cleanliness level  
is adequate.  
The indicator pin remains extended until it is reset man-  
ually. This helps locate the lube line that is blocked.  
312497G  
13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Repair  
4a. Master Divider Valve Equipped With Performance  
NOTE:  
Indicator  
If all indicator port plugs are removed, the master  
will not cycle. Blockage is in this divider valve.  
With manual pump connected to the master divider  
valve as outlined in Locating Blockages, Step 3,  
raise pressure to 2000 psi. The indicators in the  
indicator ports will signal the location of the block-  
age. An indicator in the up position indicates pres-  
sure is in that outgoing line and signals the blockage  
is in the area being served from this outlet (FIG. 11).  
When indicator port plug of a blocked area is  
removed, a small shot of trapped lubricant will usu-  
ally surge out of this outlet as the inlet pressure on  
the divider valve drops.  
If testing (Step 4) indicates a blockage in the master  
divider valve, this divider valve must be disassem-  
bled and cleaned. See Clean Divider Valve, Step 7,  
If no indicator pins are protruding, the blockage is in  
the master divider valve.  
HAND PUMP  
HAND PUMP  
SYSTEM PUMP  
LUBE  
OUTLETS  
LUBE  
OUTLETS  
INDICATOR PIN UP  
INDICATOR  
PORT  
PLUGS  
MASTER  
DIVDER  
VALVE  
MASTER  
DIVDER  
VALVE  
REMOVED  
SECONDARY  
DIVIDER  
VALVE  
SECONDARY  
DIVIDER  
VALVE  
TI11103  
FIG. 11  
TI11104  
4b. Master Divider Valve Equipped Without Performance  
FIG. 12  
Indicator  
5. If in Step 4, a blockage has been indicated  
downstream of the master divider valve, install a  
manual pump in the indicator port of the master  
divider valve that is common to the blocked area.  
(See FIG. 12).  
1) With manual pump connected to the master  
divider valve as outlined in Locating Blockages,  
Step 3, raise pressure to 2000 psi.  
2) Remove, one at a time, each indicator port plug  
and attempt to operate manual pump after each  
plug is removed. Do not exceed 2000 psi.  
a. Proceed to downstream secondary divider valve  
and remove all indicator port plugs.  
b. Slowly operate manual pump. If lubricant can be  
discharged freely through each of the indicator  
ports of this divider valve, the blockage is not in  
the supply line or the divider valve. Go to step 6.  
3) If pressure drops and the master cycles freely  
after an indicator port plug is removed, then  
blockage is downstream in the area that is being  
served from that outlet. See Locating Block-  
ages, Step 3.  
If lubricant is not freely discharged through  
open indicator ports of the second divider valve,  
the blockage is in this divider valve or its supply  
line. Disconnect supply line at secondary inlet  
14  
312497G  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Repair  
fitting and slowly operate manual pump to verify  
location. If blockage is in this divider valve, go to  
step 7.  
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 (FIG. 14). Also remove end plugs  
only and try to move each piston back and forth  
without removing the piston from the valve sec-  
tion.  
LUBE  
OUTLET  
SYSTEM PUMP  
MASTER  
DIVDER  
VALVE  
Inlet  
10T  
LUBE OUTLETS  
20S  
INDICATOR PORT  
PLUGS REMOVED  
10T  
30S  
End  
FIG. 14  
NOTICE  
SECONDARY  
DIVIDER  
VALVE  
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.  
HAND PUMP  
BEARING  
FIG. 13  
b. If all pistons move freely and there is no indica-  
tion of a more serious problem, replace end  
plugs.  
6. Install manual pump into each indicator port of sec-  
ondary divider valve in turn and slowly operate  
pump (FIG. 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.  
c. Using a new gasket, tighten and torque as indi-  
cated in Table 1 (page 11).  
7. Clean Divider Valve  
Table 4: Torque Values (*see FIG. 1, page 3)  
Assembly Torque (ft-lbs)  
MJ  
12  
MD  
15  
-
MSP/MH  
5-8  
MX  
23  
18  
46  
-
MXP  
6-9  
MGO  
12  
Tie Rod Nuts  
Indicator Plugs*  
End Plugs*  
6-7  
11-13  
-
8-9  
12-15  
46-50  
12-13  
6-8  
15  
12-15  
8-9  
Valve Section  
-
Mounting Screw  
312497G  
15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Repair  
d. Clean sections and pistons in suitable clean sol-  
Separation Blockage  
vent until all lubricant has been removed.  
If a hard wax or soap-like material is found in the Valve  
Section, grease separation is occurring. This means that  
the oil is being squeezed from the grease at normal sys-  
tem operating pressure and the grease thickener is  
being deposited in the divider valve. Cleaning the divider  
valve will only temporarily solve the problem. Consult  
your lubricant supplier for recommendations on alter-  
nate lubricants and your local Graco/Trabon distributor  
to verify compatibility with centralized lubricating sys-  
tems.  
e. Use compressed air to dry and blow out all  
ports thoroughly.  
A small metal probe should be used to make  
sure all passages are clean and open.  
Inspect cylinder bore and piston carefully for  
scratches, score marks or other damage.  
If all indictor port plugs are removed, master will not  
cycle. Blockage is in this divider valve.(FIG. 11).  
NOTE: If either piston or cylinder bore is damaged, a  
new section must be installed. All pistons are selectively  
fitted to the bore for proper clearance. Be sure to rein-  
stall piston only into the valve section from which it was  
removed.  
f. If divider valve section and piston both appear in  
good condition, reassemble section making cer-  
tain piston slides smoothly but snugly in cylinder  
bore.  
g. Repeat cleaning and inspection of each section.  
After all sections have been cleaned, blown out,  
inspected and found to be in good condition,  
reassemble divider valve using notes and  
sketches (Step 7) as a reference.  
NOTE:  
Always use new gaskets.  
Test operation of divider valve using manual pump.  
Contamination Blockage  
If dirt, foreign material or any other form of contamina-  
tion is found in a divider valve, cleaning that divider valve  
will only temporarily solve contamination blockage prob-  
lems. The source of the contamination must be elimi-  
nated for satisfactory service.  
The system filtering method must be investigated, filter  
elements should be inspected and cleaned if necessary.  
The reservoir filling method should be reviewed to elimi-  
nate any chance of foreign material entering the reser-  
voir during filling.  
16  
312497G  
Download from Www.Somanuals.com. All Manuals Search And Download.