Morris CX 8105, Operator'S Manual

Page: 127 / 182

Maintenance
CX 8105 - Ground Drive December 2016 7-11
Important
It is imperative that no air leaks occur in the
Air Cart tank, as even the smallest air leak will
lead to material bridging in the tank, thereby
causing misses in the field.
Note: When Air Cart is not in use leave lid latches
and clean-out doors loose to help maintain
resilience of the seals.
Air Delivery System - Continued
Air Leak Check
It is imperative that no air leaks occur in the Air Cart
tank. Any air leaks could cause loss of tank air pressure
affecting feed rates, which could become erratic or stop.
To prevent this from occurring, it is strongly recommended
that a pressure test be conducted prior to seeding
time. This can be performed very easily and simply by
completing the following steps:
• Clean fan impeller and adjust tank lids.
• Disconnect the 2 1/2” (64 mm) diameter primary
hoses from the rear of the cultivator at the primary
hose coupler(s) by loosening the four 3/8” bolts.
• Install the blank off plate that is supplied with the Air
Cart at each coupler and retighten the 3/8” bolts. If
the blank off plates are not readily at hand a piece
of cardboard can be used in its place.
• Once the blank off plates have been installed, start
the fan and run at 4,500 rpm.
Check the following areas for air leaks:
1. Tank lid seals.
2. Metering body shaft seals.
3. Metering body to tank seals.
4. Collector to metering body seals.
5. Fan to plenum and plenum to collector.
6. Clean-out doors, for leaks and loss of seal memory.
7. Collector door seals.
8. Diverter valves and double shoot mounting plates.
9. Tanks union plate.
10. Tank site glasses.
Air leaks can be detected by spraying a soapy water
solution onto the seal area. If bubbling of soap occurs,
the seal has a leak. Another method is to use your
hand to feel for any air movement around the seal. This
method requires a calm day, as the wind can make it
difficult to detect a small leak.
• If any of the above areas leak, remove the parts and
replace the seal. Ensure upon reassembly that the
parts are tightened sufficiently to prevent air leakage.
• Remove the blank off plates before using the Air Cart.
Once the pressure test is complete, check the following
areas for air leaks:
11. Couplers between seeder and cultivator.
12. Access doors on divider heads.