Page 3
30101
Locating Blockage in Series-Flo
®
Systems
R
Step No. 3 —
Testing accomplished in Step 2 has indicated the blockage is
downstream of the master divider valve. Install the manual
pump in the indicator Port of the master divider valve that is
common to this blocked area. See Figure D. Proceed to
downstream secondary divider valve and remove all indicator
port plugs. 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, see Step 4. If lubricant is not freely discharged
through the open indicator ports of the secondary divider
valve the blockage is in this divider valve or its supply line.
Disconnect supply line at secondary inlet fitting and slowly
operate manual pump to verify location. If blockage is in
divider valve see Step 5.
Step No. 4 —
Install manual pump into each indicator port of secondary
divider valve in turn, and slowly operate pump. See Figure E.
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.
Step No. 5 —
When testing indicates a blockage has occurred in any
divider valve, that divider valve must be disassembled and
cleaned.
Note: Dirt and foreign material are the worst
enemies of any lubricating equipment. All servicing
and disassembling should be carried out under the
cleanest possible conditions.
Before disassembling any divider valve make a sketch and
note as to the arrangement of the intermediate sections. For
example: INLET 10T-20S-10T-30S END. See Figure F. Also
remove end plugs only and try to move each piston back and
forth without removing the piston from the intermediate
section.
Caution —
-
Do not
insert hard metal objects into piston bore (i.e.,
punches, screwdrivers, etc.) use a brass rod and hand
pressure only.
If all pistons are movable and there is no indication of a more
serious problem, replace end plugs and using a new gasket
apply the correct torque, see Torque Table. Retest this
divider valve using the manual pump. If a piston is jammed, or
a hard wax-like substance, or dirt is noted at the end of the
piston chamber, proceed with disassembly. The divider valve
can be dismantled by removing the tie rod nuts. With the
individual sections on the bench remove the end plug from
both ends of the section. Taking one section at a time remove
the piston, if it appears to be jammed, try removing it from the
other direction. With badly jammed pistons it may be neces-
sary to use a brass rod and lightly tap piston out.
Figure D
Figure C
