NMC-WOLLARD MB-4 200-DF - Page 64

4.1 MAJOR REPAIRS
If you intend to perform your own engine re
-
pairs, you may wish to obtain additional ser
-
vice literature from your local Cummins
industrial engine distributor. See “Section
L” of the Cummins “Operation and Mainte
-
nance Manual” provided with this manual
for ordering instructions.
4.2 ENGINE REMOVAL
1. Block rear wheels in both directions to
prevent tractor from rolling when drive
shaft is disconnected. Do not apply
parking brake. Shift transmission into
neutral.
2. Remove engine hood, side panels, and
access plates.
3. Remove air cleaner and hose assem-
blies.
4. Disconnect battery cables.
5. Raise front of tractor with suitable
stands.
6. Drain engine crankcase, cooling system
and transmission.
7. Remove radiator hoses and radiator.
8. Remove fan blade.
9. Tag and disconnect all wire harnesses to
engine and transmission components.
10. Disconnect air lines.
11. Remove ground strap.
12. Disconnect and cap fuel lines at required
engine locations.
13. Disconnect accelerator linkage.
14. Disconnect exhaust pipe at the exhaust
manifold. Tape over opening to prevent
debris from entering engine.
15. If needed, remove screws from hood
support and slide back to allow clear
-
ance for removing engine assembly.
The engine assembly is
large and heavy. Use proper slings and
hoists for removal and installation.
16. Attach a suitable hoisting bracket to en
-
gine and transmission assembly for sup
-
port and lifting. Attach hoisting bracket to
a hoist.
17. Remove converter drain plug access
cover from lower end of converter hous
-
ing. Matchmark torque converter with
drive plate (for easier installation).
18. Remove converter-to-flywheel attaching
nuts.
19. Remove converter housing-to-engine at-
taching bolts.
20. Lower tractor for easier engine removal,
if necessary.
21. Remove engine mount capscrews.
22. Move engine away from transmission.
The driveplate (flywheel)
will not support a load.
23. Lift engine assembly upward slowly from
tractor frame.
24. Lower engine assembly onto a suitable
support or repair stand.
25. To install engine assembly, reverse this
procedure. Make sure plugs are secure
and hoses are tight. Refill engine crank
-
case, cooling system, and transmission
with recommended fluids and check for
leaks.
M200 MB4 Tow Tractor Manual No. 42975
PAGE 4-2
JULY 15, 2001