D9T Track-Type Tractor Hydraulic System – Transmission



Illustration 1 g02723446

Front view



Illustration 2 g02723447

Section B-B

Table 1
Specification for 331-4034 Transmission Planetary Gp    
Item     Qty     Part     Specification description    
1     24     7G-0897 Thrust Disc     Thickness of one new thrust disc is
1.98 ± 0.10 mm (0.078 ± 0.004 inch).    
2     8     8E-8304 Thrust Disc     Thickness of one new thrust disc is
1.91 ± 0.10 mm (0.075 ± 0.004 inch).    
3     Reverse clutch – Thickness of four new friction discs and three new plates are
42.55 ± 0.56 mm (1.675 ± 0.022 inch).    
4 8E-2729 Friction Disc     Thickness of one new friction disc is
5.59 ± 0.08 mm (0.220 ± 0.003 inch).    
3 3P-7447 Plate     Thickness of one new plate is
6.73 ± 0.08 mm (0.265 ± 0.003 inch).    
4     Forward clutch – Thickness of five new friction discs and four new plates are
54.87 ± 0.72 mm (2.160 ± 0.028 inch).    
5 9W-9856 Friction Disc     Thickness of one new friction disc is
5.59 ± 0.08 mm (0.220 ± 0.003 inch).    
4 3P-7447 Plate     Thickness of one new plate is
6.73 ± 0.08 mm (0.265 ± 0.003 inch).    
5     Third speed clutch – Thickness of three new friction discs and two new plates are
30.29 ± 0.40 mm (1.193 ± 0.016 inch).    
3 233-9748 Friction Disc     Thickness of one new friction disc is
5.61 ± 0.08 mm (0.221 ± 0.003 inch).    
2 370-8590 Plate     Thickness of one new plate is
6.73 ± 0.08 mm (0.265 ± 0.003 inch).    
6     Second speed clutch – Thickness of two new friction discs and one new plates are
17.95 ± 0.24 mm (0.707 ± 0.009 inch).    
2 233-9748 Friction Disc     Thickness of one new friction disc is
5.61 ± 0.08 mm (0.221 ± 0.003 inch).    
1 370-8590 Plate     Thickness of one new plate is
6.73 ± 0.08 mm (0.265 ± 0.003 inch).    
7     First speed clutch – Thickness of five new friction discs and four new plates are
37.62 ± 0.82 mm (1.481 ± 0.032 inch).    
5 234-6707 Friction Disc     Thickness of one new friction disc is
4.98 ± 0.10 mm (0.196 ± 0.004 inch).    
4 370-8592 Plate     Thickness of one new plate is
3.18 ± 0.08 mm (0.125 ± 0.003 inch).    
8     1     8M-5661 O-Ring Seal     Lubricate each groove and the o-ring seal with oil immediately before the assembly of each bearing.    
9     1     7T-5617 Seal As     Lubricate the sealing lip lightly with the lubricant that is being sealed.    
10     2     8M-4390 O-Ring Seal     Lubricate each groove and the o-ring seal with oil immediately before the assembly of each bearing.    



Illustration 3 g02723476

Rear view

Table 2
Specification for 331-4034 Transmission Planetary Gp    
Item     Qty     Part     Specification description    
11     12     7H-7658 Spring     Length under test force is
105.56 mm (4.156 inch).    
Test force is
186.83 ± 14.46 N (42.00 ± 3.25 lb).
Free length after test is
140.49 mm (5.531 inch).
12     24     9H-5537 Spring     Length under test force is
46.832 mm (1.8438 inch).    
Test force is
127.89 ± 10.23 N (28.75 ± 2.30 lb).
Free length after test is
62.708 mm (2.4688 inch).
13     2     8S-6212 Bolt     Torque to
115 ± 7 N·m (85 ± 5 lb ft).    
14     16     5M-7900 Bolt     Torque to
115 ± 7 N·m (85 ± 5 lb ft).    
15     1     2S-8926 Bolt     Torque to
115 ± 7 N·m (85 ± 5 lb ft).    
16     6     9W-8297 Dowel     Length is
202.00 ± 0.25 mm (7.953 ± 0.010 inch).    
Diameter is
12.637 ± 0.013 mm (0.4975 ± 0.0005 inch).
17     6     9W-8298 Dowel     Length is
159.00 ± 0.25 mm (6.260 ± 0.010 inch).    
Diameter is
12.637 ± 0.013 mm (0.4975 ± 0.0005 inch).
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