Twin Disc MG-5170DC, Руководство по обслуживанию

Страница: 126 / 250

126
Twin Disc, Incorporated
Assembly
Marine Transmission Service Manual #1020667
Assembly and Installation of Primary and Secondary Shafts
1. Assembly of transfer gear to secondary shaft.
A. Clean taper on secondary shaft and tapered bore in transfer gear
using OSHA approved cleaner. Do not touch cleaned surfaces.
Loctite® 7070 cleaner is recommended.
B. Determine if secondary shaft and transfer gear can be advanced
properly:
a. Hold secondary shaft in a vertical position standing on its
front end.
b. Use a depth micrometer and measure distance from the
rear end of the shaft to the shaft shoulder at small end of
taper. Record this distance as dimension “A”.
c. Install secondary transfer gear on secondary shaft taper,
small diameter of tapered bore up. Seat gear on shaft
taper with 445 N to 890 N (100 lbs to 200 lbs) of force.
d. Use a depth micrometer and measure distance from rear
end of shaft to machined face of transfer gear at small
diameter of tapered bore. Record this distance as
dimension “B”.
e. Calculate expected advance: Expected advance = A - B.
Calculated advance must be 1.96 mm to 2.97 mm (0.077
in. to 0.117 in.). If calculated advance is not within the
range, recheck all measurements and calculations for
errors. If no errors are found, contact the Product Service
Department at Twin Disc, Incorporated for information.
C. Set secondary transfer gear on fixture T-18050-335 with large
diameter of tapered bore up. Move fixture and transfer gear to a
press with at least 445 kN (50 tons) capacity.
D. Install secondary shaft front end up, into tapered bore of transfer
gear. Seat shaft in tapered bore of gear by applying 445 N to
890 N (100 lbs to 200 lbs) downward force on shaft.