31
4. MAINTENANCE
4.3 DAILY SERVICE
4.3A Screen Tension
To prevent premature screen or crown
bar rubber wear:
Every 4 hours of operation, check the
crown bar rubber on the top and bottom
screens. (T90081 &T90082) Make sure it is
intact and not damaged. If necessary,
replace.
Every 4 hours, torque the bolts retain-
ing the screens to the deck. Start from the
middle, tighten the bolts in a criss-cross
pattern, torque the top screen to 466 lbs.
(632 Nm), and torque the lower screen to
120 lbs. ft (163 Nm) (T90013).
See section 5.3 for torque specifications
per bolt size.
Ensure the screens are tight against the
crown bar rubbers. If necessary, tighten the
bolts further, in 25 lbs./ft. (34 Nm) incre-
ments, until the screen is tight against the
crown bar rubbers.
Start the engine and engage the shaker
to verify. (Refer to section 3 for operating
instructions). The screens must not bounce
freely on the crown bar rubbers. This will
decrease the life of the screens. You will
notice if the screens are loose by the rap-
ping noise they will make. If necessary,
tighten the bolts further, in 5 lbs. / ft. (6.8
Nm) increments, until the screen is tight
against the crown bar rubbers and they do
not bounce when the shaker is engaged.
When performing maintenance, ensure the
engine is off and the ignition key is
removed to prevent accidental start up.
WARNING
Shaker deck / head
T90013
T90082
Holddown
Crown bar rubber
T90081
Crown bar rubber
Bottom wire cloth
holddown
To Next Page
Loading...