How to rebuild a Rochester Quadrajet 4MV carburetor
m |
|||
| Line 184: | Line 184: | ||
| − | ===A. Before You Begin=== | + | ===A. Before You Begin: Preparation=== |
---- | ---- | ||
The following tips will save you time, avoid any unnecessary stress, and keep you working safe. | The following tips will save you time, avoid any unnecessary stress, and keep you working safe. | ||
| Line 197: | Line 197: | ||
| − | ===B. | + | ===B. Prior to Removal: Documenting and Disconnecting=== |
---- | ---- | ||
:Begin by taking pictures of the carburetor as its sits on the engine. Photograph from every possible angle, including: | :Begin by taking pictures of the carburetor as its sits on the engine. Photograph from every possible angle, including: | ||
| Line 229: | Line 229: | ||
| + | :The carburetor is held in place by two long bolts visible on top of the air horn and two nuts on the back of the carburetor on top of the throttle cable bracket. Loosen these up, remove them, and set them aside in the parts organizer. | ||
| − | |||
| − | |||
| − | |||
| − | Try lifting the | + | ===C. Removal=== |
| + | ---- | ||
| + | Try lifting the carburetor up slowly, making sure nothing else needs to be disconnected or removed. Once it clears the intake manifold, take it out of the engine bay and turn it upside down over a container to catch the fuel that will fall out. Skipping this step can result in a large puddle of fuel on the workspace. | ||
| − | Place the carburetor on | + | Place the carburetor on a stand if you have one. Keep a couple of shop towels or rags around it in case any more fuel spills out during dis-assembly. |
| Line 299: | Line 299: | ||
According to Hotrodders forum member '''''cobalt327''''': | According to Hotrodders forum member '''''cobalt327''''': | ||
<blockquote>''"Just be sure that when it's all said and done that there's positively no friction from the retainer on the PP shaft itself. It has to be absolutely free to move w/o any hindrance."''</blockquote> | <blockquote>''"Just be sure that when it's all said and done that there's positively no friction from the retainer on the PP shaft itself. It has to be absolutely free to move w/o any hindrance."''</blockquote> | ||
| + | |||
| + | [[File:GHP-Q3621-400w.jpg|thumb|250px|left|Metal power piston retainer clip (used on early Q-jet)]] | ||
| + | |||
| + | [[File:GHP-Q3622-PP RETAINER BUSHING SPLIT.jpg|thumb|250px|center|Replacement power piston retainer bushing; split type.]] | ||
| Line 312: | Line 316: | ||
''The primary wells can be drilled and tapped for short screws that will cure them for good, although these wells seldom leak. ^5</blockquote>'' | ''The primary wells can be drilled and tapped for short screws that will cure them for good, although these wells seldom leak. ^5</blockquote>'' | ||
| − | Also please see post #48 on [http://www.hotrodders.com/forum/rochester-quadrajet-4mv-carburetor-removal-disassembly-rebuild-rookie-level-190558-4.html page 4] on the thread [http://www.hotrodders.com/forum/rochester-quadrajet-4mv-carburetor-removal-disassembly-rebuild-rookie-level-190558.html "Rochester Quadrajet 4MV Carburetor: Removal, Disassembly, Rebuild (Rookie Level")] | + | Also please see post #48 on [http://www.hotrodders.com/forum/rochester-quadrajet-4mv-carburetor-removal-disassembly-rebuild-rookie-level-190558-4.html page 4] on the thread [http://www.hotrodders.com/forum/rochester-quadrajet-4mv-carburetor-removal-disassembly-rebuild-rookie-level-190558.html ''"Rochester Quadrajet 4MV Carburetor: Removal, Disassembly, Rebuild (Rookie Level")''] |
| + | |||
| + | [[File:Quadrajet- Detriorated Epoxy on Wells.jpg|thumb|center|450px|Detriorated epoxy on a Quadrajet 4MV]]Please see Post #76-78 and #90 on [http://www.hotrodders.com/forum/1977-chevy-k20-engine-suffers-hesitation-power-loss-when-drive-213757-6.html page 6] of the thread [http://www.hotrodders.com/forum/1977-chevy-k20-engine-suffers-hesitation-power-loss-when-drive-213757-6.html ''"1977 Chevy K20: Engine Suffers from Hesitation/Power Loss When In Drive"''] | ||
| Line 547: | Line 553: | ||
=Photos to be used if and where needed= | =Photos to be used if and where needed= | ||
| − | |||
| − | |||
[[File:Q-JET BANJO FUEL INLET FITTING ON CARB.jpg|thumb|300px|left|How to make a straight fuel inlet into a 90 degree inlet.]] | [[File:Q-JET BANJO FUEL INLET FITTING ON CARB.jpg|thumb|300px|left|How to make a straight fuel inlet into a 90 degree inlet.]] | ||
[[File:Q-JET FILTER HOUSING GASKETS.jpg|thumb|300px|left|Two of the three different carb filter housing gaskets. Earliest was 7/8", later were all 1", early had gasket over the threads, late style had white gasket on end of housing before threads.]] | [[File:Q-JET FILTER HOUSING GASKETS.jpg|thumb|300px|left|Two of the three different carb filter housing gaskets. Earliest was 7/8", later were all 1", early had gasket over the threads, late style had white gasket on end of housing before threads.]] | ||
Your Privacy Choices