Pump Solutions Group Neptune Series 6000 dia-PUMP MODELS 6100 thru 6250 - Manual (Page 12)

12
SECTION III
NORMAL MAINTENANCE
7.0 MAINTENANCE
Under normal conditions, the “dia-Pump” should not require any significant amount of maintenance. It
is advised that periodic visual observations be made of the oil level to make sure that it is over the
worm gear. The liquid end of the pump should also be inspected for leakage. These observations
should be made regularly.
The hydraulic fluid should be drained and replaced twice a year, using the drain plug (# 68 on Parts
Drawing) at the back of the pump. This change can be scheduled with the normal factory maintenance
at seasonal periods.
7.0.1 Check Valves: Removing, cleaning, replacing.
The “dia-Pump” incorporates a unique check valve design whereas the discharge and suction
piping NEED NOT be disturbed in order to service the valves.
Should the valves need cleaning, remove as follows:
7.0.2 Remove discharge valve cap (# 002073 on Figure 3).
7.0.3 Remove ball retainer (# 000215 on Figure 3), using 5/16” Allen wrench.
7.0.4 Remove discharge valve cartridge (# 000209 on Figure 3). Using special wrench
provided. Be certain that valve “0” ring (# 100204 on Figure 3) is removed with valve
cartridge.
7.0.5 Remove suction valve cap ((# 000207 on Figure 3).
7.0.6 Remove suction valve cartridge (# 000217 on Figure 3), using 5/16” Allen wrench. Be
certain that valve “0” ring (# 100204 on Figure 3).) is removed with valve cartridge.
7.0.7 Clean valve cartridges with suitable solvent. The valve cartridge is a complete and
integral unit and should not be disassembled for cleaning. If the valves are found to be
worn and in need of replacement, an entire valve cartridge in either suction or
discharge should be ordered. The suction valve is the longer of the two valve
cartridges.
7.0.8 To replace reverse above procedure using a small amount of grease to hold valve “0”
rings in place. Do not over tighten the valve cartridges as this could damage the valve
“0” rings.
FOR THE FOLLOWING OPERATIONS REFER TO PART DRAWING ON PAGE 16
7.1.1 Procedure for replacing Control Rod “0” RING (#50,51 on Parts Drawing) and Sealing Plate “0”
RING (#52 on Parts Drawing).
7.1.2 Remove hydraulic fluid from gearbox.
7.1.3 Remove indicator plate (#46 on Parts Drawing), by removing two indicator plate screws
(#45 on Parts Drawing)
7.1.4 Remove control rod assembly with control rod attached for all pumps;(#42, 43, 44, 53
on Parts Drawing) by turning counter clockwise until threads are disengaged, then
pulling out.