Sooner or later, everyone restoring an automobile will want to remove the engine in order to rebuild it. The same is true of the Forward Control. The question is, "How do you take the engine out of your Forward Control?"
Some of you may already have figured this out or have come up with some homemade solutions. Mark May decided to raise the rear of his FC-150 high enough to allow the engine to be dropped to the ground and slid aft.
The "Book Answer" is similar in that the engine needs to be lowered through the frame to the ground. Here's how Willys said it should be done.
a. Drain the cooling system by opeining the drain cocks at the bottom of the radiator and lower right side of the cylinder block.
b. Unlatch and remove the engine cover. Remove the screws attaching both halves of the engine housing to the cab. Remove the housing.
c. Disconnect the battery at the positive terminal to avoid the possibility of a short circuit.
d. Loosen the clamp which secures the air cleaner horn to the carburetor. Remove the two bolts and nuts which attach the air cleaner support bracket to the body mounting bracket. Remove the air cleaner and horn.
e. Disconnect the choke control wire from the carburetor by loosening the set screw. Remove the choke control Bowden cable from its attaching bracket on the carburetor by loosening the clamp bolt. Disconnect the accelerator rod at the carburetor by removing the cotter pin.
f. Disconnect the fuel-tank-to-fuel-pump line at the fuel pump by unscrewing the connecting nut. Plug the fuel line to prevent leakage.
g. Disconnect the fuel and vacuum lines from the carburetor by unscrewing the connections. Remove the carburetor by removing the two screws attaching it to the cylinder head.
h. Remove the radiator hoses by loosening the hose clamps and slipping the clamps back on the hose. Remove the heater hoses (one to the water pump, one to the rear of the cylinder head) in the same manner.
i. Remove the surge-tank-to-cylinder-head hose. Remove the screws attaching the surge tank support bracket to the cylinder head and remove the surge tank and bracket.
j. Disconnect the wiring from the generator, starter, and ignition coil.
k. Disconnect the oil filter inlet and outlet tubes at the engine by unscrewing the fittings. Remove the screws attaching the oil filter bracket to the cylinder head and remove the oil filter and bracket.
l. Disconnect the accelerator control rod at the lower bellcrank by removing the cotter pin. Remove the upper accelerator control bellcrank by removing the attaching cylinder head bolt. Disconnect the accelerator pedal retracting spring. Disconnect the accelerator control wire at the lower bellcrank by loosening the clamp bolt.
m. Disconnect oil sender unit wire at the unit.
n. Disconnect the exhaust pipe at the exhaust manifold by removing the stud nuts.
o. Raise the front of the vehicle and place on jack stands.
p. Remove the bolts and nuts attaching the three exhaust pipe clamps to the frame and remove the exhaust pipe and exhaust pipe extension.
q. Disconnect the clutch control cables at the cross shaft by removing the clevis pins. Remove the bolts and nuts attaching the clutch control crass shaft to the frame and remove the cross shaft.
r. Disconnect the hand brake retracting spring. Disconnect the brake control cable and equalizer from the rear hand brake lever.
s. Disconnect the transfer case shift rod at the adjusting link by removing the nut on the end of the rod.
t. Remove the front and rear propeller shafts by disassembling their universal joints.
u. Disconnect the battery cable at bell housing.
v. Remove the fan belt. Loosen generator bracket and raise the bracket out of the way.
w. Remove the two front motor mount attaching bolts and disconnect the engine ground strap at the frame.
x. Disconnect the spark plug cables at the plugs and remove cable bracket from the rocker arm cover stud.
y. Remove the rocker arm cover by removing the attaching stud nuts.
z. Install a suitable lifting sling on engine. Attach sling to a boom hoist or other lifting device and take up slack.
aa. Disconnect the speedometer cable at the transfer case by unscrewing the attaching coupling.
bb. Disconnect the transmission end of the transmission control rods by removing the cotter keys and washers from the end of the rods. Secure the rods to the vehicle frame with a piece of wire.
cc. 
Attach a lifting bracket to the engine, using existing head bolt locations. be sure bolts selected will hold the engine with the weight well balanced. Using a single arm crane or an A-frame (see below) and chain falls combination, attach the crane hook or chain falls to the bracket.
dd. Disconnect the rear engine support (frame cross member) at the side rails by removing the four attaching bolts.
ee. Place a dolly jack under the transmission to assist in lowering the engine-transmission assembly.
ff. Lift the engine slightly and remove the two rubber front engine mountings.
gg. Lower the engine slowly with the chain hoist and jack, shifting the engine when necessary to clear vehicle frame and body parts. After the jack has been lowered as far as possible, it should be removed from under the transmission so the engine can be lowered to the floor with the chain falls or crane. Rest the engine on wood blocks to prevent damage.
hh. Lift the front end of the vehicle as necessary to allow for removal of the engine.
If a single arm crane is not available, the above image provides detailed information necessary for building an A-frame to which a chain falls can be attached. The distance between the upper and lower chain fall hooks should be enough to raise the engine before the engine descent is started. Therefore, the 4 x 6 cross beam of the A-frame should be positioned as high as possible in the cab. The height of the crossbeam can be changed by adding or removing blocks under both A-frame uprights. Make certain the blocks under the A-frame uprights provide a rigid, stable platform capable of carrying the engine weight without allowing the A-frame to shift. The A-frame is designed so it may be taken down and stored in a relatively small are when not in use.
