NMC-WOLLARD MB-4 200-DF, Operation, Maintenance And Parts Manual

Page: 68 / 321

3. Disconnect battery cables and remove
battery.
4. Disable fuel system, disconnect and
plug ends of fuel tubes.
5. Disconnect coolant lines from engine,
transmission and radiator. Plug hose
ends.
6. Unplug engine harness from under
dash. Disconnect all wiring leading to
transmission and engine.
7. Remove capscrews and washers secur-
ing rear drive shaft flange to park brake
disk. Force driveshaft back until flange
clears, swing drive shaft down and away
from transmission.
8. Remove brake cable from park brake
caliper.
9. Remove capscrews and washers secur-
ing front driveshaft flange to transmis-
sion. Force driveshaft flange toward
front of tractor until flange clears, swing
driveshaft down and away from trans-
mission.
10. Remove belts and fan from engine.
11. Remove radiator and shroud.
12. Remove fasteners from rear hood sup-
port and deck plate and slide back far
enough to enable you to remove the en-
gine/transmission unit.
13. Remove fasteners securing engine and
transmission to their respective mounts.
Pull engine/ transmission unit up and out
of tractor. Be careful of protruding parts.
IMPORTANT: The drive plate (flywheel) will
not support a load. None of the weight of
the transmission must be allowed to rest on
the drive plate during removal or installa-
tion.
14. Secure engine/transmission unit to pre-
vent tipping or falling.
15. Match-mark torque converter with drive
plate to provide easier installation.
IMPORTANT: Do not attempt to rotate the
drive plate or torque converter by prying or
using force or you will damage the drive
plate.
16. Remove capscrews securing drive plate
to torque converter.
17. Install a small “C” clamp on transmission
housing to keep torque converter from
falling out when transmission is removed
from engine.
18. Remove capscrews and washers secur-
ing transmission bell housing to engine.
19. Carefully move transmission straight
back to disconnect it from the engine.
20. Remove “C” clamp from torque con-
verter.
IMPORTANT! The torque converter should
not be disassembled.
5.9 INSTALLING ENGINE AND
TRANSMISSION AS A UNIT
Installation is generally the opposite of re-
moval.
1. When unit is installed in tractor, secure
engine and transmission to their respec-
tive mounts with fasteners.
2. Connect rear drive shaft to parking brake
disk. Connect front driveshaft to front of
transmission.
3. Unplug and connect coolant lines to
transmission
and engine. Remount
pump to rear of transmission.
M200 MB4 Tow Tractor Manual No. 42975
PAGE 5-4
JULY 15, 2001