Woods RC3.5E, Operator'S Manual

Page: 14 / 57

14 Dealer Service
MAN1253 (3/15/2018)
DEALER SERVICE
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 prop -
erly equipped or your mechanics are not properly trained in this type of repair,
you may be time and money ahead to replace complete assemblies.

Before working underneath, disconnect driveline, 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 adjust -
ments, service, or maintenance.

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.
GEARBOX MAINTENANCE
NOTE:
Read this entire section before starting any repair. Many steps are
dependent on each other.
1.
Fill gearbox with SAE 80W or 90W gear lube until it runs out the side
level plug.
NOTE:
Repair to this gearbox is limited to replacing bearings, seals,
and gaskets. Replacing gears, shafts, and a housing is not cost effective.
Purchasing a complete gearbox is more economical.
2.
Inspect gearbox for leakage and bad bearings. Leakage is a very serious
problem and must be corrected immediately. Bearing failure is indicated
by excessive noise and side-to-side or end-play in gear shafts.
Seal Replacement
Recommended sealant for gearbox repair is Permatex
®
Aviation 3D Form-A-
Gasket or equivalent.
Leakage can occur at the vertical or horizontal gaskets and shaft seals.
Leakage at the horizontal gasket or seal can be repaired without removing the
gearbox from the cutter.
Seal Installation
NOTE:
Proper seal installation is important. An improperly installed seal will
leak.
1.
Clean area in housing where seal outer diameter (OD) seats. Apply a thin
coat of Permatex.
2.
Inspect area of shaft where seal seats. Remove any burrs or nicks with
an emery cloth.
3.
Lubricate gear shaft and seal lips.
4.
Place seal squarely on housing, spring-loaded lip toward housing. Select
a piece of pipe or tubing with an OD that will sit on the outside edge of the
seal but will clear the housing. Tubing with an OD that is too small will
bow seal cage and ruin seal.
5.
Carefully press seal into housing, avoiding distortion to the metal seal
cage.
Figure 14
. Seal Installation
SEAL REPAIR
(Figure 15)
Vertical Shaft Seal Repair
1.
Disconnect and remove the rear driveline from the gearbox.
2.
Remove vent plug (24) and siphon gear lube from housing through this
opening.
3.
Remove crossbar (see Crossbar Removal, page 16 ).
4.
Remove output cap (16) and output seal (13) by removing four cap
screws (12) and washers (11). Replace with new seal (see
Seal
Installation, page 14 ).
Vertical seal should be recessed in output cap.
NOTE:
Distortion to seal cage or damage to seal lip will cause seal to
leak.
5.
Secure output cap (16) on to bottom of gearbox using four cap screws
(12) and lock washers (11).
NOTE:
Make sure output gasket (17) and (18) are in place.
6.
Fill gearbox with SAE 80W or 90W gear lube until it runs out the side
level plug.
7.
Remove and replace any seal damaged in installation.
Horizontal Seal Leak Repair
1.
Disconnect and remove the rear driveline from the gearbox.
2.
Remove vent plug (24) and siphon gear lube from housing through this
opening.
3.
Remove input cap (2) and input seal (6) by removing six cap screws(12)
and washers (11). Replace with new seal (refer to
Seal Installation,
page 14 ).
NOTE:
Distortion to seal cage or damage to seal lip will cause seal to
leak.
4.
Secure input cap (2) on to front of gearbox using six cap screws (12) and
washers (11).
NOTE:
Make sure input gasket (8) and (9) are in place.
5.
Fill gearbox with SAE 80W or 90W gear lube until it runs out the side
level plug.
WARNING
CAUTION CAUTION
1. Seal
2. Pipe or tube
3. Seal seat
4. Casting
Pipe or tube must
press at outer
edge of seal.
Incorrect
Installation