Textron Ransomes CT435, Operator Instructions Manual

Page: 48 / 76

46
LUBRICATION AND MAINTENANCE
VALVE CLEARANCE (LASH)
Correct valve clearance is one of the most
important factors of good engine performance.
Excessive clearance will cause the engine to
operate excessively noisy, and insufficient clearance
will cause& poor performance. Because of this, it is
extremely important that care be used when
adjusting valve clearance.
Checking and Adjusting Valve Clearance: Check
and adjust the valves every 600 hours. The
clearance check and adjustment should be made
with the engine cold.
1. Remove the valve rocker arm cover.
2. Check each pair of valves when the
corresponding piston is on top dead centre on
the compression stroke (both valves closed).
Check the clearance of each valve with a
feeler gauge, Figure 60.
The setting should be
Intake 0.008 (.2 mm)
Exhaust 0.008 (.2 mm)
3. If the clearance is incorrect on any valve, turn
the adjusting screw at the push rod end of the
valve rocker arm either into or out of the arm
while checking for correct clearance with the
feeler gauge.
4. Install the rocker arm cover. Use a new
gasket if the old one is damaged. Tighten the
cover bolts evenly.
Figure 60 Checking Valve Clearance
MAINTENANCE AND INSPECTION OF THE
ROPS
After the first 20 hours of operation and after every
500 hours of operation or six months, whichever
comes first, do the following
1. Check the torque of the ROPS mounting
bolts. If necessary, tighten the bolts to the
correct torque. See bolt torques page 58.
2. Check the operators seat. Replace parts that
show wear or damage.
POSSIBLE DAMAGE TO THE ROPS
If the machine has rolled over or the ROPS has
been in some other type of accident (such as hitting
an overhead object during transport) you must
replace the ROPS to get the original protection.
After an accident, check for damage to (1) the
ROPS, (2) the operator’s seat. Before you operate
the machine, replace all damaged parts.
IMPORTANT: Do not try to weld or straighten the
ROPS.
WARNING: Never attach chains,
ropes, or cables to the ROPS or Cab
for pulling purposes; this will cause the
tractor to tip backward. Always pull
from the tractor drawbar.
WARNING; If the ROPS or cab is
removed or replaced, make certain that
the proper hardware is used and the
recommended torque values are
applied to the attaching bolts.
WARNING: Always wear your seat belt.
Never wear the seat belt if the tractor is
not equipped with a ROPS or Safety
Cab.