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Front Section of Housing, Disassemble and Assemble
(R 25/F 28)
Illustration
| 1. |
Retaining pin assembly |
| 2. |
Reverse gear pawl assembly |
| 3. |
Guide bearing shift lever shafts |
| 4. |
Bearing bushing for auxiliary shaft gear
cluster |
| 5. |
Roller bushing, front |
| 6. |
Shims |
| 7. |
Housing front section |
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Disassemble
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Disassemble transmission – see operation "Transmission,
Disassemble and Assemble".
 Remove
Reverse gear pawl, 1 screw to right transmission side.
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Pull reverse gear pawl with spring out of front section of
transmission housing in direction of arrow.
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Remove
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Shift lever shaft guide bearing from transmission, KM-556-1 and
Kukko 21-2.
When doing this, the bearing is always destroyed and must be
replaced.
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Only necessary when replacing: pull front bearing bushing for
auxiliary shaft gear cluster out of transmission using KM-556-1 (1)
and Kukko 21/4 (2).
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Press bearing of main drive gear out of transmission using
suitable sleeve.
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Caution
When replacing the following parts, determine axial play of
auxiliary shaft gear cluster: front section of transmission
housing, transmission nose piece, auxiliary shaft gear cluster
and/or roller bushing – see operation "Axial Play of
Auxiliary Shaft Gear Cluster, Determine" in this group.
Install
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Drive new front roller bushing (1) flush in using suitable pipe
(2) or KM-302 and KM-370 (installed as nose piece).
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Drive guide bearing for shift lever shaft flush into
transmission using KM-409-A (1).
Reverse gear pawl with spring into transmission.
Insert one end of spring at transmission housing (3) and one end
at angle of pawl (2).
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Torque
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Reverse gear hex bolt to front section of transmission housing
(right transmission side) – 10 Nm / 7 lbf. ft.
Assemble
Assemble transmission, see operation "Transmission, Disassemble
and Assemble".
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