Woods Equipment BW2400XQ, BW1620XQREV manual Wing & Center Gearbox Repair

Horizontal Shaft Seal Replacement

1.Disconnect and remove the driveline from the gearbox.

2.Remove dipstick breather assembly (30), Figure 11, and siphon gear lube from housing through this opening.

3.Remove input oil seal (6). Replace with new one.

4.Fill gearbox with SAE 80W or 90W gear lube to the center of the horizontal shaft or until oil is between lowest ring and end of dipstick.

WING & CENTER GEARBOX REPAIR

Gearbox Cap Leak Repair (Figure 11)

1.Disconnect and remove the driveline from gearbox.

2.Remove dipstick breather assembly (30) and siphon gear lube from housing through this opening.

3.Remove cap where leak is occurring (4, 21 or 26).

4.Clean mating surfaces with a gasket remover.

5.Replace gaskets (7, 8, 22, 23, 31) as required to meet the following specifications:

●End float should be less than 0.012".

●Rotational torque should be less than 2.2 lbs- inch.

●Gear backlash should be between 0.006" and 0.016".

6.Install cap (4, 21 or 26) using a gasket sealant.

7.Install cap screws (3 or 25) and torque to 29 lbs-ft.

8.Fill gearbox with SAE 80W or 90W gear lube to the center of the horizontal shaft or until oil is between lowest ring and end of dipstick.

Gearbox Removal

NOTE: Gearbox is heavy: do not attempt to move with- out mechanical assistance.

1.Disconnect and remove the driveline from the gearbox that is to be removed.

2.Remove cotter pin and nut from vertical shaft and remove crossbar (see page 30).

3.Remove the eight bolts that attach gearbox to cutter and remove gearbox.

Gearbox Disassembly (Figure 11)

1.Remove six cap screws (25) and cover (26) from gearbox and pour out gear oil.

2.Remove caps (21 & 4).

3.Support gearbox in a hand press and push on the gear end of input shaft (5) to remove bearing (20).

4.Remove gear (32) from inside housing.

5.Remove bearing (20) by using a punch and hammer from outside of housing.

6.Support housing in vise in a horizontal position.

7.The castle nut (14), cotter pin (13), and hub were already removed with the stump jumper/crossbar. Remove the ring (33), and oil seal (15).

8.Remove cotter pin (19) and nut (18) from output shaft (16).

9.Remove output shaft (16) by using a punch and hammer and tap on top to drive down. Remove gear (17) and shims (9, 10, 11) from inside housing.

10.Remove bottom bearing (12) by using a punch and hammer from the top, outside the housing.

11.Support housing upside down (top cover surface) and remove bearing (20) by using a punch and hammer from the bottom side of the housing.

12.Inspect gears for broken teeth and wear. Some wear is normal and will show on loaded side. Forged gear surfaces are rough when new. Check that the wear pattern is smooth.

13.Inspect vertical and horizontal shafts for grooves, nicks, or bumps in the areas where the seals seat. Resurface any damage with emery cloth.

14.Inspect housing and caps for cracks or other damage.

Gearbox Assembly (Figure 11)

1.Clean housing, paying specific attention to areas where gaskets will be installed.

2.Wash housing and all components thoroughly. Select a clean area for gearbox assembly. Replace all seals, bearings, and gaskets. All parts must be clean and lightly oiled before reassembling.

3.Insert both output bearings (12, 20) in the housing, using a round tube of the correct diameter and a hand press.

4.Slide output shaft (16) from the bottom through both bearings (12, 20) until it rests against bottom bearing (12).

5.Slide shims (9, 10, 11) over output shaft (16). Use the same thickness of shims that were removed as a starting point.

6.Place gear (17) onto output shaft (16) and secure with nut (18), and cotter pin (19). The output shaft must have zero endplay and a rotation torque of 20/30 LBS-IN without the lower seal. Tighten nut

(18)as required.

7.Press bearing cup (20) into end of the housing closest to the gear, using a round tube of the correct diameter and a hand press. Install cap (4 or 21) and gaskets (7, 8 or 22, 23).

8.Place gear (32) and spacers (29, 24) through top of housing and align gear (32) and shaft (5) so that gear spline matches the shaft spline.

9.While holding gear (32) in place, slide input shaft

(5)through gear (32) and press onto bearing cone

(20).

26 Dealer Service

(Rev. 8/20/2009) MAN0764 (11/5/2008)