14.Inspect housing and caps for cracks or other damage.
Gearbox Assembly
Refer to Figure 12.
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 the nut (18) and cotter pin (19). The output shaft must have zero end play and rotational torque of 20 to 30
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 match the shaft spline.
9.While holding gear (32) in place, slide input shaft
(5) through gear (32) and press onto bearing cone
(20).
10.Press bearing (20) over input shaft (5).
11.Slide shims (7, 8 or 22, 23) over input shaft. Install cap (4 or 21).
12.Check input shaft end float by moving the input shaft (5) by hand. If end float is higher than 0.004", insert shim between housing and cap that is closest to the gear. Repeat until end float is less than 0.004". Check rotational torque by hand. The torque should be less than 2.2
13.Check that the gear backlash is .015/.025 at O.D. of gear. Adjust the backlash by adding or removing shims (9, 10, 11) from the output shaft (16).
14.Apply grease to lower seal lips (15) and press seal
(15)over output shaft (16), using a tube of the correct diameter. Be sure not to damage the seal lip.
15.Press in housing so that seal is recessed. Install retaining ring (33).
16.Press in input oil seal (6), using tube of correct diameter. Be careful not to damage seal lip.
17.Place top cover (26) on top of housing and secure with six cap screws (25).
18.Check gearbox housing for leaks by plugging all holes except one. Apply 4 psi compressed air and immerse the gearbox in water to verify that there are no leaks.
19.Remove gearbox from water and dry off with compressed air. Fill gearbox with SAE 80W or 90W gear lube to the center of the horizontal shaft. Tighten all plugs.
Gearbox Installation
NOTE: Gearbox is heavy: do not attempt to move with- out mechanical assistance.
1.Set gearbox on cutter and fasten with bolts and nuts. Torque bolts to 300
2.Attach crossbar (Crossbar Installation, page 37).
MAN0963 (2/16/2012) | Dealer Service 27 |
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