SkyTrak 8042 Service Manual - Manual (Page 362)

7A.39 Model 8042, 10042, 10054 Legacy Rev. 10/03
Engine: Cummins 4BT3.9 and 4BTA3.9
8. Remove the capscrews and nuts (14) holding the
coupler (15) to the flywheel. Turn the engine by
hand, using the fan belt, until the capscrews line up
with the access hole (13). Discard the capscrews
and nuts. After all the capscrews are removed,
remove the coupler from the flywheel and discard
the coupler.
Note: It will be easier to remove the coupler from the left
side of the engine.
9. At this time use a suitable cleaner/solvent and
thoroughly clean the mounting lip of the flywheel.
Wipe any debris from the inside of the bell housing.
Use the cleaner to clean the threaded holes (16)
around the flange of the bell housing.
7A.12.2 Coupler and Drive Shaft Removal
1. Shut off the engine, shift the transmission into
NEUTRAL, apply the parking brake and remove the
ignition key.
Note: Rotating the fan belt by hand, gives greater
access to removing the drive shaft mounting
capscrews (17).
1. Remove the capscrews (18) and straps (19) that
secure the drive shaft (20) to the transmission yoke
(21). Discard both straps and capscrews.
2. Remove the capscrews and lockwashers (17)
securing the drive shaft (20) to the coupling flange
(22).
Note: It may be necessary to loosen/remove the motor
mounts (25) on either side of the engine to gain access
to the bottom capscrews (23) on the outer half of the
coupler (24). Place a jack under the bell housing (use a
wood block to support engine) and carefully lift the
engine until the bottom edge of the bell housing is at the
top edge of the frame member that mounts the rear axle
to the frame. Watch the fan-to-radiator clearance as you
are lifting the engine. If necessary, turn the fan slightly,
by hand, to gain additional clearance.
3. Remove the capscrews and lockwashers (23)
securing the outer half of the coupler (24).
SH1090
13
14
15
16
SH3050
17
18
19
20
21
22
23
24
SH4000
25