Pump maintenance and repair, Ace hydraulic pump, Coulter disc replacement – Great Plains NP4000 40-foot Operator Manual User Manual
Page 85: Ace hydraulic pump coulter disc replacement
Great Plains Manufacturing, Inc.
Maintenance and Lubrication
81
2012-03-28
407-776M
Pump Maintenance and Repair
Ace Hydraulic Pump
The Ace pump is designed for long life and service.
Through the years, it may be necessary to replace the
mechanical seal or service components of the pump.
A mechanical seal may weep slightly, but if it starts to
drip, the pump will have to be disassembled. Before
disassembly, be sure to wash it out with fresh water.
If the pump leaks, before removal from applicator, run
the pump with adequate water in tank to diagnose the
actual pump problem.
Refer to the Ace Pump Instruction manual (HYD-MAN)
for disassembly instructions.
Coulter Disc Replacement
Replace 20 in. (52 cm) coulter blades when adjusting
application depth and/or applicator level becomes
difficult. Signs that blade replacement is indicated are:
• Coulter blade diameter is close to, or below,
15 in. (38 cm).
• Height adjustment, when level, requires no lift-assist
• Fertilizer arm adjustment is at the upper limit
See page 94 for replacement and alternate coulter
blades.
Figure 58
Ace Pump Parts
31965