KEENAN
MechFiber400 Operator’s Manual
Revision G02 28
th
Sept 2020
23
8 Maintenance
The KEENAN MechFiber diet feeder has been designed for optimum performance with minimal
maintenance. Chains, bearings and grease points have been kept to a minimum without
compromising function. All components are high-quality and provide excellent durability.
Regular, routine maintenance will ensure your KEENAN MechFiber diet feeder gives you the
best results with minimal problems.
WARNING:
Prior to carrying out any maintenance on the machine, always ensure that
the tractor engine is stopped, and disconnect the P.T.O. and hydraulic hoses
from the tractor. Observe safety precautions at all times when working on
machine. Read the safety section (Section 5) before attempting to work on
the machine.
The recommended operating pressure in the hydraulic circuit is 170 bar and a flow rate of 40
litres per minute. Replacement hoses should comply with DIN EN 853. When replacing
hydraulic hoses, always wear suitable protective equipment.
8.1 Chains
1.
Each week check the condition of the chain tension arms and adjust as required. There are
four chains used on the MechFiber400 model. The primary drive chain (ASA120) drives the
primary idler shaft from the input shaft (see figure 8b) and the secondary chain (ASA140HS)
drives the secondary idler. The third chain (ASA200HS) drives the rotor. The fourth chain
(ASA120) drives the auger independently. All four chains are tensioned by a spring
assembly on the slack side of the chain.
Table 4: MechFiber400 drive chains
Note: The ASA120 chain use split pins in the joiner link as shown, the ASA140HS and
ASA200HS chains must use roll pins due to the high loads involved.
Primary drive chain
ASA120
Links
72 (incl. joiner)
Pitch (mm)
38.1
Pitch (inches)
1.5
Chain length (mm)
2,743.2
Chain length (inches)
108
Secondary drive chain
ASA140HS
Links
118 (incl. joiner)
Pitch (mm)
44.45
Pitch (inches)
1.75
Chain length (mm)
5245.1
Chain length (inches)
206.5
Rotor drive chain
ASA200HS
Links
108 (incl. joiner)
Pitch (mm)
63.5
Pitch (inches)
2.5
Chain length (mm)
6,858
Chain length (inches)
270
Auger drive chain
ASA120
Links
70 (incl. joiner)
Pitch (mm)
38.1
Pitch (inches)
1.5
Chain length (mm)
2667
Chain length (inches)
105
Figure 8a: Chain joiner link
Figure 8: Oil level dip stick
Dip stick
