Thomas ProTough 300 Screener, Owner'S/Operator'S Manual

Page: 18 / 73

33 32
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. (S0051) Make sure it is intact and
not damaged. If necessary, replace.
Every 4 hours, torque the bolts retain-
ing the screens to the screen deck. Start
from the middle, tighten the bolts in a criss
- cross pattern to 45 lbs. / ft (61.2 Nm) (fig.
S0014, S0062, S0034).
Assure the screens are tight against the
crown bar rubbers. If necessary, tighten the
bolts further, in 5 lbs. / ft. (6.8 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.
S0014
S0062
1
1
2
2
3
3
4
4
5
6
7
8
Screen bolt tightening sequence
Crown bar rubbers
Top screen bolts
Bottom screen bolts
S0034
When performing maintenance, assure
the engine is off and the ignition key is
removed to prevent accidental start up.
WARNING
SO164
Note:
A complete 150 Hour service is to be performed initially at 50
Hours.
ITEM SERVICE REQUIRED
Screen tension Give a quick visual check to the tension. If
loose, adjust the tension. See section 4.
Spring Bolts Check the spring bolt tension. See section
4.
Engine Oil Check level. Add if required. Use mini-
mum API class CF oil.
Radiator Check level. If required, fill with 50 / 50
mix of ethylene glycol and water. Check
cooling fins for obstruction. Flush with
compressed air and / or water.
Hydraulic Oil Check level. Add 10 W 30 motor oil as
required.
Air Cleaner Check air restriction indicator.
Replacement only.
Safety Equipment Check all safety equipment is secure.
Decals Check all decals are intact and legible.
Lubrication Grease bearings and pivot points.
Tires and Wheels Check air pressure and wheel nut torque
every 50 hours or before each transport.
50 Hour Service Perform complete 150 Hour service. Initial
service only. See section 4.
Engine Oil, Filter and Initial change only.
Fuel Filter
Hydraulic Oil Filter Initial change only.
Preventative Service Perform complete 150 Hour service.
Repeat every 150 hours. See section 4.
Engine Oil and Filter Change.
Hydraulic Oil Filter Change.
Drive System Check mounting bolts, coupling alignment
and condition.
Engine Fuel Filter Change.
Hydraulic Oil and Filter Change.
Engine Coolant Drain, flush and refill.
Hydraulic Reservoir Replace suction element.
4 HOURS 8 HOURS 50 HOURS 150 HOURS 300 HOURS 900 HOURS
Note: For complete engine service details refer to Engine Repair Manual 43370.
4. MAINTENANCE 4. MAINTENANCE