Hydrostatic Transmission Neutral Arm Assembly
28
(3.3
to 36 in--lb
to 4.1 N--m)
18
16
17
15
14
71
(8
to 89 in--lb
to 10 N--m)
71
(8
to 89 in--lb
to 10 N--m)
11
13
9
12
1
2
10
9
3
15
to 17 ft--lb
8
4
(20 to 24 N--m)
7
5
6
Figure 30
1.
2.
3.
4.
5.
6.
Transmission housing
Cap screw
Mounting plate
Neutral return spring
Neutral return arm
Bushing
7.
8.
9.
Grease fitting
Eccentric pin
Retaining ring
13. Bearing
14. Socket head screw (4 used)
15. Socket head screw
16. Neutral proximity switch
17. Trunnion cam
10. Jam nut
11. Socket head screw
12. Pin
18. Seal
Disassembly (Fig. 30)
Disassemble neutral arm components on hydrostat-
4. Check for correct operation of neutral switch and ad-
just if needed (see Traction Neutral Switch adjustment
intheComponentssectionofChapter6 -- ElectricalSys-
tem).
1.
ic transmission as needed using Figure 30 as a guide.
NOTE: To remove trunnion cam (item 17) from hydro-
static transmission, transmission has to be disas-
sembled.
Assembly (Fig. 30)
2
1.
Assemble neutral arm components to hydrostatic
transmission using Figure 30 as a guide. If eccentric pin
(item8)wasremoved,makesurethatmark oneccentric
pin is orientated to top of transmission. Note fastener
torque specifications shown in Figure 30.
1
Figure 31
2.
2.
tion Unit Operator’s Manual).
Lubricate grease fitting on eccentric pin (see Trac-
1.
Eccentric pin
Alignment mark
3.
Check and adjust neutral position (see Traction Unit
Operator’s Manual).
Groundsmaster 3280--D/3320
Page 5 -- 39
Hydraulic System
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