1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
FUEL SYSTEM & EXHAUST 4 - 41<br />
MANIFOLD HEAT CONTROL<br />
(8 Cylinder)<br />
Exhaust and intake manifolds are separate castings bolted<br />
to the cylinder block and also to each other as there are<br />
interconnecting passages through which the exhaust gases<br />
flow to heat the fuel mixture. The amount of exhaust gases<br />
directed on to the walls of the inlet manifold and the duration<br />
of time during which these gases are so directed is<br />
controlled by a heat resistant valve set into the exhaust<br />
manifold. This valve is controlled according to the under<br />
hood temperature by a thermostatic coil spring.<br />
HEAT CONTROL VALVE<br />
(8 Cylinder)<br />
2. Remove the throttle connection from carburetor.<br />
3. Remove the fuel line and vacuum line from carburetor.<br />
4. Remove heat riser tube from the carburetor.<br />
5. Remove the fourteen nuts and retainers attaching manifolds<br />
to block and remove manifolds with carburetor attached.<br />
6. Clean off all traces of old gasket material.<br />
Installation:<br />
Reverse the procedure of removal.<br />
REMOVAL:<br />
NOTE: For removal, follow same procedure as exhaust<br />
manifold removal and, in addition, the following operations:<br />
REMOVAL:<br />
HEAT CONTROL VALVE<br />
(6 Cylinder)<br />
1. Disconnect spring from lever.<br />
2. Remove cotter key from shaft and remove washer.<br />
3. Remove heat control spring.<br />
4. Remove the two nuts holding cover to manifold, and<br />
remove cover.<br />
5. Remove springs from lower pin and shaft.<br />
6. Use a drift to remove the tapered pin. This will allow<br />
removal of the shaft butterfly.<br />
Installation:<br />
Reverse procedure of removal.<br />
EXHAUST AND<br />
INTAKE MANIFOLDS<br />
(6 Cylinder)<br />
Remove both manifolds as a single unit as follows:<br />
REMOVAL:<br />
1. Remove air cleaner by loosening the attaching screw at<br />
the carburetor air horn.<br />
For removal, follow same procedure as exhaust and<br />
intake manifold removal and, in addition, perform the following<br />
operations:<br />
1. Remove exhaust manifold elbow from exhaust manifold.<br />
2. Remove spring, retainer, cotter pin, and heat control<br />
spring.<br />
3. Remove heat riser shaft. Use a hack saw blade to cut shaft<br />
at each side of butterfly. This will allow removal of shaft and<br />
butterfly as an assembly.<br />
NOTE: Counterweight can be salvaged by driving out<br />
retaining pin (weight to shaft).<br />
Installation:<br />
1. Assemble new shaft with counterweight and butterfly.<br />
NOTE: The butterfly should be centrally spaced on the<br />
shaft to eliminate any binding. After determining that<br />
fly is in the open position, securely weld the butterfly<br />
to shaft.<br />
2. Install heat control spring, retainer, anti-rattle spring and<br />
retainer and cotter pin.<br />
3. Install exhaust manifold elbow to manifold.