Section 2: Adjustments
AP-SD96 Silage Defacer 350-270MK
9/3/19
13
Checking & Adjusting Rotor Chain
Tension
Over time, the use of your Silage Defacer may require
adjusting the tension on the rotor chain. Be sure to check
the tension periodically to maintain your attachment’s top
performance. Too much slack in the chain can cause
excessive chain deflection, diminishing the defacing
capabilities of the rotor. Excessive tension on the chain
can place stress on the hydraulic motor and sprockets,
leading to accelerated and premature wear of the drive
components.
Before making adjustments to the chain, lower the Silage
Defacer to the ground, then relieve all hydraulic pressure
from the auxiliary hydraulic lines connected to the
attachment. Proceed with properly shutting down the
power machine by following the
!
WARNING
To avoid serious injury or death:
•
Hydraulic fluid under high pressure can penetrate the skin
and/or eyes causing a serious injury. Wear protective gloves
and safety glasses or goggles when working with hydraulic
systems. Use a piece of cardboard or wood rather than
hands when searching for leaks. A doctor familiar with this
type of injury must treat the injury within a few hours or
gangrene may result. DO NOT DELAY.
•
Shut power machine down and release all hydraulic
pressure to the equipment before connecting or
disconnecting hydraulic hoses to or from the power
•
Hydraulic fluid and components that the fluid flows through
such as couplers, hoses, hydraulic lines, fittings and motor
become hot from use. Be careful when connecting and
disconnecting couplers. It is best to allow hydraulic fluid
and hydraulic components to cool before touching them.
•
All guards and shields must be installed and in good
working condition while operating the attachment.
1. Shut down the power machine before dismounting by
following the
2. With attachment resting on the ground, operate the
hydraulic control levers to release all hydraulic
system pressure from loader arm lift cylinders, and
hitch tilt cylinders.
3. Disconnect hydraulic hose couplers from power
machine.
4. Remove both 3/8" locknuts (#4), 3/8" lock
washers (#5), and 3/8" x 1" bolts (#7) from chain
guard (#8) and left rotor frame arm (#6). Now remove
chain guard (#8).
5. Check tension and chain deflection on the rotor
chain. See Figure 2-2.
IMPORTANT:
Chain deflection is determined by how
far the rotor chain moves from its original position
after pushing up or down on the chain links.
6. Loosen 5/8" hex nut (#3) from 5/8" GR5 bolt (#1).
Do not remove hex nut (#3) from bolt (#1).
7.
Move idler sprocket (#2) up in slotted hole to increase
tension on rotor chain. Move idler sprocket (#2) down
in slotted hole to decrease tension on rotor chain.
8. When adjusting tension on rotor chain, ensure chain
deflection does not exceed a 1/4" or fall below 1/8".
See Figure 2-2.
9. When correct tension has been achieved, retighten
5/8" hex nut (#3) to the 5/8" GR5 bolt (#1) to the
correct torque, by referring to
10. Enclose sprockets and rotor chain by replacing chain
guard (#8) onto left rotor frame arm (#6) with both 3/
8" x 1" bolts (#7), and secure with 3/8" lock washers
(#5), and 3/8" locknuts (#4). Do not overtighten
locknuts (#4).
Rotor Chain Tension Adjustment
Figure 2-1
Rotor Chain Tension Guideline
Figure 2-2
NOTE:
5/8" x 3" bolt (#1) and 5/8" hex nut (#3) are
exploded for illustration purposes only in Figure 2-1.
Do not remove bolt (#1) or hex nut (#3) from idler
sprocket (#2) when adjusting chain tension.
72591
Chain Deflection
Rotor Chain
Chain deflection is determined by how far the rotor chain moves from its
original position after pushing up or down on the chain links.
72593
Check tension and chain
deflection here
Section 2: Adjustments