Dealer Service
15
MAN1253 (3/15/2018)
Figure 15
. Gearbox Assembly
DISASSEMBLE GEARBOX (FIGURE 15)
1.
Remove vent plug (24) of gearbox and pour out remaining gear oil.
2.
Support housing in vise with the input shaft in a horizontal position.
3.
Remove the six cap screws (12) and washers (11) from the input cap.
4.
Tap shaft with a hammer side to side to loosen the cap from the housing.
Once the cap is loose, pry the cap out of the housing. Please note that
the cap, cap bearing, seal, shaft and gear will all come out with the cap.
5.
With this cap, shaft and gear assembly removed from the gearbox,
remove retaining ring (22).
6.
Remove oil seal (6) from input cap.
7.
Support cap and press shaft through the gear. Once the shaft and gear
are separated from the cap, remove retaining ring (7) from cap. Cap
bearing can now be removed.
8.
Remove input gaskets from the housing face and cap.
9.
Support housing in a vise with the output shaft in a horizontal position.
10.
With the hub/stump jumper/crossbar, castle nut, cotter pin already
removed, remove the four cap screws (12), lock washers (11) and output
cap (16).
11.
Remove output gaskets (17) and (18).
12.
Push output shaft and pinion (20) down and remove ball bearing (3),
output bearing spacer (10), retaining ring (22), shim (19) and remove
output shaft and pinion (20).
13.
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 wear pattern is smooth.
14.
Inspect vertical and horizontal shafts for grooves, nicks, or bumps in the
areas where the seals seat. Resurface any damage with emery cloth.
15.
Inspect housing and caps for cracks or other damage.
REASSEMBLE GEARBOX (FIGURE 15)
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.
Slide ball bearing (3) on to output shaft and pinion (20). Place against
gear and secure with retaining ring (22).
4.
Install shim (19) in output housing bore. Push output shaft and pinion
(20), ball bearing (3) and retaining ring (22) into housing until ball bearing
(3) seats flat against the shim in housing socket.
5.
Insert output bearing spacer (10) and ball bearing (3) over output shaft
until it seats against inside roller bearing (3).
6.
Secure output cap (16) with the new output seal (13) installed to bottom
of gearbox housing using the four 10mm X 1.5 X 25 cap screws (12) and
lock washers (11).
NOTE:
Be sure output gaskets (17 and 18) are in place. Use RTV sili
-
cone on gaskets for a leak free seal. Apply grease to output seal (13) lip
for easy installation.
7.
Place ball bearing (21) at back of housing and press in socket using a
round tube of the correct diameter and a hand press until fully seated.
8.
Press new ball bearing (3) into cap (2) socket by using a round tube of
the correct diameter and hand press until fully seated.
9.
Install retaining ring (7) into input cap (2) to retain the bearing (3).
10.
Install retaining ring (23) onto input shaft (4) in the groove next to the
spline. Press shaft (4) through the bearing (3) that is installed in input cap
(2) until retaining ring is fully seated against bearing (3).
11.
Install input gear (23) onto input shaft (4) making sure it is seated against
bearing (3). Install retaining ring (22) over the spline on input shaft (4)
and make sure it is fully seated against the gear face.
12.
Install input shaft, cap, and gear assembly into housing using one each
input gasket (8) and one each input gasket (9). Using a rubber hammer,
tap the end of the input shaft until the cap face is fully seated against the
gaskets and housing face.
13.
Check that the gear backlash is between .2 mm (0.006”) and .4 mm
(0.016”). The backlash can be increased or decreased by adding or
removing gaskets between the input cap and housing. Once the backlash
is correct add RTV silicone to the input cap face. Install six each bolts
(12) and six each washers (11) to secure input cap assembly.
14.
Slide input seal (6) onto input shaft (4) and press into housing flush with
front using a tube of correct diameter. Be careful not to damage seal lip.
15.
Check gearbox housing for leaks by plugging all holes except one. Apply
27.6 kPa (4 psi) compressed air and immerse the gearbox in water to
verify that there are no leaks.
16.
Remove gearbox from water and dry off with compressed air. With the
gearbox placed in the operating position add SAE 80W of 90W EP oil
until it runs out of back level hole threads. Install level plug and breather
plug (24). Tighten all plugs.
1.
Housing
2.
Input cap
3.
Ball bearing
4.
Input seal
5.
Retaining ring
6.
Input seal
7.
Retaining ring
8.
Input gasket (0.30 mm)
9.
Input gasket (0.13 mm)
10.
Bearing spacer
11.
M10 Lock washer
12.
M10 x 1.5 x 25 Cap screw
13.
Output seal
14.
1" - 14 Slotted flange nut
15.
Cotter pin
16.
Output cap
17.
Output gasket (0.30 mm)
18.
Output gasket (0.13 mm)
19.
Shim kit
20.
Output gear
21.
Ball bearing
22.
Retaining ring
23.
Input gear
24.
Vent plug
Summary of Contents for RC3.5E
Page 1: ...OPERATOR S MANUAL ROTARY CUTTER 3 15 2018 RC3 5E RC4E RC5E RC6E MAN1253...
Page 7: ...Declaration of Conformity7 MAN1259 3 28 2018 CE CERTIFICATION...
Page 22: ...22 Assembly MAN1253 3 15 2018 NOTES...
Page 24: ...24 Parts MAN1253 3 15 2018 MAIN ASSEMBLY...
Page 41: ...D claration de Conformit 8 MAN1253 3 15 2018 Declaration of Conformity...
