Cub Cadet BDU-10/21 - Manual (Page 6)

BDU-10/21
BDU-10/21 Page 6
Maintenance
BDU-21L/A
BDU-10L
Maintenance
Check the transmission cooling fan for broken or distorted
blades, and check to see that the fan is securely fastened.
Replace the fan if damaged.
Keep the transmission clean. Grass clippings and dirt will
influence the cooling efficiency of the fins on the transmis-
sion housings. Avoid high pressure fluid washes, com-
pressed air is the preferred method of removing loose
debris. Avoid the immediate area of the lip seals or damage
may occur.
Check to make sure the bypass valve and linkage is
operational. The bypass valve should be fully released
before operating the vehicle. It should extend approxi-
mately 0.22" (5.588mm) from the hex nut.
Inspect the transmission for leaks at the lip seals, damage
to fittings, hoses, the filter, or to the housings. Check the
oil level and add oil as necessary to bring it up to the proper
level. Refer to vehicle owners manual.
Fluids
The fluids used in HYDRO-GEAR products have been
carefully selected, and only equivalent, or better products
should be substituted.
Typically, an engine oil with a minimum rating of 9.0 cSt
(55 SUS) at 230°F (110°C) and an API classification of SJ/
CD is recommended. A 20W-50 engine oil has been
selected for use by the factory and is recommended for
normal operating temperatures. For colder climate opera-
tion (see chart), a change to a 10w-40 engine oil may be
necessary. Another alternative that will provide excellent
all climate performance and extended time between oil
changes is a 15W-50 synthetic engine oil.
SAE VISCOCITY GRADES
20W-50
10W-40
15W-50 Synthetic
-35 o -5 o 15 o 60 o 100 o
AMBIENT AIR TEMPERATURE o F
Safety Precautions
Certain procedures may require the vehicle to be disabled
(wheels raised off the ground, engine disconnected, etc.)
in order to prevent possible injury to the technician and
bystanders.
Some cleaning solvents are flammable. To avoid possible
fire, do not use cleaning solvents in an area where a source
of ignition may be present.
The loss of hydrostatic driveline power may result in the
loss of hydrostatic braking capacity. Proper brake mainte-
nance becomes very important should this condition
develop.