11
ENGINE GENERAL SERVICE
COOLING
If tractor is getting hot, check for blockage of the cooling
system. Air is blown around the cylinder and across the
cylinder head by the fan. The fan housing and the cooling fins
on the cylinder and cylinder head must be kept clean and
unobstructed at all times.
NEVER OPERATE WITHOUT FAN OR FANBELT
OR WITH ANY AIR DEFLECTOR OFF. The air deflector
directs air flow around the cooling fins. Removal results in
improper air circulation.
Improper timing can cause tractor to run hot.
EXTERNAL SURFACES
External surfaces (tractor as well as engine) must be
maintained in a clean condition, free of any dirt or oil
accumulation which reduces cooling efficiency.
FAN
The fan shaft is supported by two bearings with a spacer
between them. The bearing housing is packed with general
purpose grease upon assembly.
Whenever a tractor is overhauled the bearing housing should
be repacked with grease. Be sure the spacer is in place between
the bearing.
ENGINE RECONDITIONING
ENGINE REMOVAL
1. Remove any attachment from tractor and replace with
attachment cover plate. Tip tractor forward on advance
casting.
2. Disconnect throttle and choke controls from carburetor.
3. Turn off fuel and remove fuel line from carburetor
4. Remove the air cleaner assembly. Remove air cleaner
hose from carburetor and the air cleaner mounting
bracket.
5. Disconnect governor linkage, if so equipped.
6. Remove the L.H. air deflector.
7. Remove fan belt.
8. Remove the bolt securing the High-Low and
Forward-Reverse controls at R.H. handle.
9. On swiftamatic tractors, disconnect the shifter rod from
the shifter handle on the R.H. Handle.
10. Disconnect kill wire from magneto.
11. Remove R.H. air deflector. .
12. Remove cylinder air deflector.
13. Remove nuts and lockwashers from fan housing bracket
weldments.
14. Loosen bolts securing rear hitch to transmission and
bolts securing hitch braces to hitch. Remove bitch braces
from fan housing brackets and lower hitch to floor.
15. Loosen bolts securing handles to the fan housing and
bolts securing handles to transmission.
Fi
ure 12
16. Pull out bottom of fan housing to clean fan housing
brackets and raise handle, fan housing, and fuel tank
assembly up over engine and out of way.
17. Remove oil lines from each side of oil pump and from
elbow on L.H. side of engine crankcases.
18. Remove the nut and washer from the stud extending
through the chassis casting in front of the engine.
19. Loosen the magneto coupling.
20. Remove the bolts securing the engine to the chassis.
21. Slide engine back and away from the chassis.
Fi
ure 11
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