Carburetors generally don't use bearings in the way that, say, a wheel hub would. The moving parts within a carburetor (throttle shaft, etc.) use bushings, needle bearings, or operate on friction, often with lubrication. Zerk fittings (grease fittings) are used for chassis components, not carburetor internals.
If you're working on a 1958 Chevrolet station wagon carburetor, the process would be:
1. Identify the carburetor: Determine the exact make and model of the carburetor (Rochester, Carter, etc.). This is crucial for finding the correct parts and instructions. The carburetor's identification tag, usually on the carburetor's body, will be helpful.
2. Obtain a repair manual: A shop manual specific to your vehicle's year and engine is essential. This manual will provide detailed instructions, diagrams, and torque specifications for carburetor disassembly, cleaning, repair, and reassembly.
3. Disassemble the carburetor: Carefully remove the carburetor from the engine, following the steps in your repair manual. This typically involves disconnecting fuel lines, throttle linkages, and the air cleaner. Then, systematically disassemble the carburetor, taking note of how each part fits together. Use a camera to take pictures at each step to help remember reassembly. Be mindful of small parts, springs, and gaskets.
4. Replace worn parts: This is where you'd replace any worn bushings or other parts. You likely won't be replacing bearings with Zerk fittings. If you have damaged shafts or parts, these would need to be replaced. Order replacement parts from a reputable source using the carburetor's identification information.
5. Clean and reassemble: Thoroughly clean all parts using carburetor cleaner. Inspect the parts for damage. Replace any damaged parts. Carefully reassemble the carburetor, referring to your repair manual, ensuring everything goes back together correctly.
6. Reinstall the carburetor: Once reassembled, reinstall the carburetor onto the engine, reconnect fuel lines and linkages, and double-check for leaks.
In short: If you believe there are bearings needing replacement *and* Zerk fittings in a 1958 Chevrolet station wagon carburetor, you've either misidentified the part or there's a serious modification or unusual repair that's not standard. The repair manual is critical to understanding what needs to be done. Consult a mechanic if you're not comfortable tackling this yourself, as improper carburetor repair can lead to engine damage.
