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NV3550 MANUAL TRANSMISSION
DISASSEMBLY AND ASSEMBLY (Continued)
Fig. 94 Output Shaft And Geartrain Installed In Input
1 – OUTPUT SHAFT AND GEARTRAIN
2 – INPUT SHAFT
3 – SPECIAL TOOL
6747
(7) Install Adapter 6747-2A on front bearing hub of
countershaft, if not previously done. The adapter has
a shoulder on one side. The shoulder goes toward the
countershaft.
(8) Slide countershaft (and adapter) into fixture
slot. Verify that countershaft and output shaft gears
are fully meshed with the mainshaft gears before
proceeding (Fig. 95).
Shaft
(9) Check alignment of countershaft and output
shaft gear teeth. Note that gears may not align per-
fectly. A difference in height of 1.57 to 3.18 mm (1/16
to 1/8 in.) will probably exist. This difference will not
interfere with assembly. However, if the difference is
greater than this, the countershaft adapter tool is
probably upside down. Remove countershaft, reverse
adapter tool, reinstall countershaft and check align-
ment again.
Fig. 95 Countershaft Installed On Fixture Tool
1 – OUTPUT SHAFT AND GEARTRAIN
2 – COUNTERSHAFT (SLIDE INTO PLACE ON FIXTURE TOOL)
XJ