Woods Equipment RD990X manual Vertical Shaft Seal Replacement, Horizontal Shaft Seal Replacement

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.

1.Seal

2.Pipe or tube

3.Seal seat

4.Casting

Pipe or tube must press at outer edge of

Incorrect

Installation

Figure 19. Seal Installation

Vertical Shaft Seal Replacement

1.Disconnect and remove the driveline from the gearbox.

2.Remove vent plug (24). Figure 18, and siphon gear lube from housing through this opening.

3.Remove gearbox stand from mower deck.

4.Remove gearbox and pulley from gearbox stand.

5.Remove vertical shaft seal (18). Replace with new seal (see Seal Replacement, page 24).

Vertical seal should be recessed in housing.

NOTE: Distortion to seal cage or damage to seal lip will cause seal to leak.

6.Fill gearbox with SAE 80W or 90W gear lube until it runs out the level plug.

7.Assemble gearbox and pulley to gearbox stand. Attach gearbox stand to mower deck.

Horizontal Shaft Seal Replacement

1.Disconnect and remove the driveline from the gearbox.

2.Remove vent plug (24), Figure 18, and siphon gear lube from housing through this opening.

3.If the leak occurred at either end of horizontal shaft, remove oil cap (20) and/or oil seal (19). Replace with new one (see Seal Replacement, page 24).

Horizontal seal should be pressed flush with out- side of housing.

4.Fill gearbox with SAE 80W or 90W gear lube until it runs out the level plug

Gearbox Removal from Mower

Refer to Figure 20.

1. Gearbox

2. Vent Plug

3. Gearbox Stand

4. Sheave

5. Shield

6. 1/2NC X 2 HHCS

7.5/8NC x 1-3/4 Flange HHCS

8.5/8NC Flange Lock Nut

9.M8 x 1.25P x 16mm HHCS

11.5/16 Flat Washer

12.1/4 x 1/4 x 1-1/4 Key

13.25 x 44 x 4mm Flat Washer

14.M24 x 2 Castle Nut

15.3/16 x 2 Cotter Pin

Figure 20. Gearbox Stand Assembly

1.Disconnect and remove the driveline from the gearbox (1).

2.Remove vent plug (2) and siphon gear lube from housing through this opening.

3.Remove gearbox stand (3) from mower deck rails by removing four cap screws (6).

MAN0845 (1/12/2011) Dealer Service 25