TM 9-4910-663-34
(3)
Remove outer low speed gear (82).
(4)
Pull inner high speed gear (83) forward 1/2 to 1 inch so that the rear bearings on pinion take off shaft (95)
and take off shaft (79) clear the inner high speed gear.
(5)
Remove pinion take off shaft (95) and remove bearing (83).
(6)
Remove take off shaft (79) and remove bearing (84).
(7)
Reverse the procedures of steps (1) through (6) to install the replacement gearcase rear bearings.
d.
Removal and Replacement of Gearcase Gear Sets (fig 3-5).
(1)
Remove the gearcase rear bearings. Refer to paragraph 3-19c.
(2)
Pull low speed gear (81) from take off shaft (79).
(3)
Remove key (80).
(4)
Pull inner high speed gear (83) off input shaft (98).
(5)
Reverse the procedures of steps (1) through (4) to install the replacement gears.
e.
Removal and Replacement of Input Shaft Rear Bearing (fig 3-5).
(1)
Remove the varidrive assembly from the test stand. Refer to paragraph 2-19.
(2)
Remove the tachometer generator with bracket. Refer to paragraph 3-14b.
(3)
Unscrew adapter plug (110) from the rear end of input shaft (98).
(4)
Remove three 1/4-20 screws (105) and lockwashers (104) that attach rear bearing cap (101) to support
bracket (102).
(5)
Remove four hex head screws (106) and lockwashers (107) and remove support bracket (102).
(6)
Pull rear bearing (29) from input shaft (98).
(7)
Reverse the procedures of steps (1) through (6) to install the replacement input shaft rear bearing.
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