T27i
Maintenance Instructions
Cleaning
71
Depress Idler Pulley
Down to Relax Belt
Blower
Drive Pulley
Blower
Pulley
GHS Blower
Drive Belt
Belt Tightener
Idler Pulley
Collapse Blower Belt Tightener
to Remove GHS Blower Drive Belt
IMPORTANT:
With the belt removed, the
blow er wheel
must spin freely.
Any binding
or drag ging of the wheel is an indication of dirt
buildup. This
buildup must be cleaned
to
avoid abrasive wear of the blower blades,
ex cessive power loss and eventual loss of
blower performance (clogging).
2. Use a pressure washer or water spray, and
di rect the spray inside the blower housing
against the blower blades. Water pressure will
cause the blower wheel to begin to spin and
the com bination of spinning action and water
will effec tively wash the inside of the housing.
Spray may be directed against the blower
blades ver tically and horizontally to cause
rotation in both directions for thorough wash-
ing action.
Wash blower until the blower
wheel spins freely
in both directions.
3.
Reinstall the GHS blower drive belt by revers-
ing the removal procedure.
GHS Exhaust Screen
Refer to
Cleaning the GHS Exhaust Screen on
page 49.
Hydrostatic Transmission Cooling Fins
Keeping the cooling fins on the hydrostatic trans-
missions clean and free of obstruction is
essential
to avoid overheating
the transmission fluid and
shortening transmission life. The cooling fins
should be checked
every 100 hours
and cleaned
if necessary.
To clean the fins, use compressed air and/or a
pressure washer. The cooling fins extend all the
way around the housing–the fins underneath need
to be clean as well as the more visible fins above.
Also, pay close attention to the area under the
drive pul ley.
IMPORTANT:
In case an oil leak develops on the
input shaft, the cooling fan blowing dusty air and oil
on the transmission will
quickly
pack the cooling
fins with
oily dirt.
If this condition occurs, replace
the seal immediately to avoid overheating and
dam aging the transmission. The input shaft
assembly and seal are easily replaced without
removing the transmission from the machine.
An additional procedure in maintaining transmis-
sion cooling is to inspect the cooling fans. Replace
the fan(s) if blades are missing or damaged.
Cooling Fan
Cooling Fins
Hydrostatic Transmission Cooling Fins