Dealer Service; Gearbox Maintenance; Bearing Check; Possible Leakage Causes - Woods 208-2 Operator's Manual

The information in this section is written for dealer
service personnel. The repair described here requires
special skills and tools. If your shop is not properly
equipped or your mechanics are not properly trained in
this type of repair, it may be more time and cost
effective to replace complete assemblies.
CAUTION
Always wear relatively tight and belted clothing
to avoid getting caught in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
Before dismounting power unit or performing
any service or maintenance, follow these steps:
disengage power to equipment, lower the 3-point
hitch and all raised components to the ground,
operate valve levers to release any hydraulic pres-
sure, set parking brake, stop engine, remove key,
and unfasten seat belt.
Before performing any service or maintenance,
disconnect driveline from tractor PTO.
Before working underneath, disconnect drive-
line, raise cutter, lock in transport position, and
block cutter securely. Hydraulic system leak down
and failure of mechanical or hydraulic system can
cause equipment to drop.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
BLOCKING METHOD
To minimize the potential
underneath the cutter,
instructions in the Owner Service section of the
manual.
A
WARNING
Never go underneath equipment (lowered to the
ground or raised) unless it is properly blocked and
secured. Never place any part of the body under-
neath equipment or between moveable parts even
when the engine has been turned off. Hydraulic
system leak down, hydraulic system failures,
mechanical failures, or movement of control levers
can cause equipment to drop or rotate unexpect-
32394 (Rev. 9/3/2004)

DEALER SERVICE

hazards of working
follow Blocking Method
edly and cause severe injury or death. Follow Oper-
ator's Manual instructions for working underneath
and blocking requirements or have work done by a
qualified dealer.

GEARBOX MAINTENANCE

Before beginning any gearbox repair, read this entire
section. Many steps are dependent on each other.
Proper gear lube level for gearbox is half full. Never
operate cutter unless gearbox is half full of a high
quality oil with a viscosity index of 80W or 90W and an
API service rating of GL-4 or 5.
Troubleshooting is an important part of gearbox
maintenance. Check for leakage and bad bearings.

Bearing Check

Bearing maladjustment or failure is indicated by
excessive noise and noticeable side or end play in gear
shafts.
Excessive end play in the vertical shaft may indicate an
improperly shimmed crossbar.
If noise or end play is noted, corrective action should
be taken. Refer to crossbar shimming and gearbox
assembly for instructions.

Possible Leakage Causes

Leakage may be caused by a vent plug not operating
properly. Remove plug and apply low air pressure to be
sure it is venting.
Operating cutter with gearbox over half full of gear lube
may cause seals to leak.
Check for cracks in housing.
Check for leaks at the top cover, vertical or horizontal
seals, and square ring between horizontal and gearbox
housing.
If any of these conditions exist, take corrective action
and clean area where leakage was evident. Place
cutter in service and check to ensure leakage has
stopped.
Leakage Repair
Permatex® 3D Aviation Form-A-Gasket or equivalent
is the recommended sealant for gearbox repair.
Permatex is a registered trademark of the Permatex Corpora-
tion.
Dealer Service 21