Textron Jacobsen Ryan 544853C Manual Del Usuario página 24

6 SERVICE
FRONT
OF
SHORT
UNIT BUSHING
KNURLED END
OF SHAFT
FIGURE 44
Bushing Installation For Idler Gear
9. Remove side arm from one side of unit. Remove the
two (2) screws securing the top of side arm assembly
and remove the nut securing side arm on lower shaft.
10. Loosen the clamp screw on the pitman arm and the
clamp screw on the eccentric assembly. Remove
from shafts. See Figure 45.
1
FIGURE 45
1. Pitman Arm
2. Eccentric Assembly
3. Bearing Cage
11. Remove the two (2) top screws securing the other
side arm. Remove side arm, shaft, and pitman arm
by pulling side arm out.
22
IDLER
GEAR
LONG
BUSHING
3
2
2531
12. Remove eccentric. Remove bearing cage from the
left and right sides of unit (put a pan under rear por-
tion of gearcase to catch excess oil from the case
cavities).
13. Using a soft hammer and punch, drive the drive shaft
out the right side of the unit. Remove gear with
counter weights by rotating and lifting gear out
through cover opening.
14. Remove the counter weights on gear (remove set
screws to remove counter weights).
15. Install new gear.
16. When installing counter weights to new gear, apply
Loctite #290 or an equivalent to threads of set screws
prior to assembly. Torque screws to 25 ft.-lbs. (34
N·m).
COUNTERWEIGHTS
1
.005 MAX.
END PLAY
FIGURE 46
1. Keyway
2. Mounting Holes On Counter Weight
17. When installing gear onto shaft, keyways on the
shaft must be centered between mounting holes of
counter weights to ensure proper timing. See Figure
47.
18. Reassemble in reverse procedure using new seals
and gaskets.
19. After installation of the drive gear and shaft, check
the end play on the shaft. End play cannot exceed
.005" (.13 mm). If adjustment is required, add or
remove shims (behind bearing cage) to obtain cor-
rect measurement. Be sure to keep an equal amount
of shims on each side of shaft.
2
2