Saturday, March 26, 2011

Identifying Mercruiser Parts

!: Identifying Mercruiser Parts

Introduction:

Mercruiser is an advanced marine propulsion system and is available in recreational and commercial vehicles ranging from 1.5-liter displacement to 14.0-liter displacements. These are generally two stroke diesel engine vehicles and are termed as inboards or stern Drives depending on the vehicle design.

Mercruiser parts:

This water vehicle contains the following major parts.

Mercruiser Engine:

These are the heart of any vehicle and are available in 4, 6 or 8 cylinders capacities, especially for stern Drives. The engine rating and displacement or fuel system are also important for a specific purpose motorboat. These are the important Mercruiser parts and every engine contains a tag specifying details of the engine.

Carburetor:

Carburetor is attached to the fuel delivery system and filters and regulates the supply of fuel to the engine. The carburetor can be identified by its design (filtering and regulating fuel) or matching its design from the catalogue or manual provided with the boat.

Exhaust Manual:

These Mercruiser parts are used for removing combustion gases from engine through exhaust manifold. These are attached to the exhaust system.

Water and Fuel Pumps:

Raw water pumps or circulating water pumps are used for cooling outboard engines by continuously circulating water. These pumps are supplied with full instructions and can be replaced easily. Fuel pumps are small nozzles through which fuel, which is generally diesel, is injected to the engine.

Marine Mufflers:

These are the silencers made from fiberglass and are designed for backpressure compensation and resistant from corrosion. These are in cylindrical shape from varying diameter of 1.5" to 12" inlet and outlet. These are suitable for below waterline installation and can easily be replaced.

Fresh water System:

These are the complete pump and pipe system for circulating fresh water used for cooling 2 stroke outboard engines. These systems are available with complete instructions and can easily be replaced.

Oil Coolers:

These are the cylindrical coolers used for cooling oil and these are available in varying sizes from 5" * 1" to 12" * 1.25" and sometimes two cylinders attached together are provided as dual coolers.

Motor and Gear Lube:

Service manual provides the complete instruction to change engine and gear oil at particular interval and the oil should be changed as per the direction given in manual.

Some other important mercruiser parts include electrical system; power steering, couplers and stern drive parts.

Identifying the mercruiser parts:

A tag is attached to identify engine model, serial number of engine, transcom assembly serial number and drive serial number. Similarly for inboard transmission, model and serial numbers are provided on a tag on the top or side of transmission. You should verify the tag details to the manual provided to you by the manufacturer and both the details should match.

Once you have located the correct model number with specified transmission details, you should see the parts details as figure of each part has been provided. You should identify the figure from catalogue or manual provided to you or you should visit the web site of the manufacturer. Once the parts corresponding to the figure has been identified, you should note down the serial number supplied in the catalogue or Web site. Once you're able to find the exact part number and corresponding serial number, it is easy for you to buy these pieces directly from the manufacturer or mediators.


Identifying Mercruiser Parts

!: Coupon Osprey Talon

Tuesday, March 22, 2011

Generator Kohler 5E raw water pump impeller removal and installation

!: Generator Kohler 5E raw water pump impeller removal and installation

Changing the raw water pump impeller on a Kohler 5E marine generator is actually very easy as long as you can fit in the small work area where the pump is. The generator is a closed system with a heat exchanger mounted on the top of the generator. You will only need a few hand tools to get this job done. A new impeller is readily available at your marina or a local marine supply store.

First you need to shut off the raw water supply at the hull fitting. Locate the pump, mine is mounted on the starboard side of the vessel even with the water line, yours could be on the opposite side. Remove the four 1/4" bolts that fasten the pump to the generator. The only things you really need to take off of the pump is the cover with the o-ring and then get the old impeller out of the pump.You might have to slide to pump partially off the drive shaft and then back into position to get the impeller to stick out a little so you can grab it with your pliers. If you have any problems getting the old impeller out you will have to remove the whole pump to work on it.

If you have most of the impeller vanes on the old impeller there is no need to worry. If there are only a couple of impeller vanes on the old impeller it is a good idea to flush the system with a garden hose to make sure you have a good flow of water and most of the vanes are out of the system. Check the rotation of the pump by touching the start button on the generator control panel and observe which way the shaft has moved or if the impeller still has vanes on it install the new impeller with the vanes running in the same direction.

The next thing to do is to install the impeller in the pump. You should lube the impeller with Vaseline or liquid soap for ease of installation and start up. The easiest way of getting the impeller in the pump is to pull the pump from the generator a little bit, place the impeller on top of the pump and twist it in the proper direction to get it started (vane tips are trailing rotation) then align the impeller with the flat(s) on the drive shaft and slide it into the pump body. After the impeller is installed the o-ring needs to be placed in the groove in the pump housing with a little bit of lube on it and the cover replaced with the bolts and tightened.

When the cover is in place and tightened it is time to open the valve for the water intake, checking for no leaks. After all looks well there it is time to run the generator to make sure the whole system is functioning properly. There should be an ample supply of water coming from the generator exhaust port while the generator is running. This will become a normal yearly maintenance job on your vessel with normal generator usage.

Sometimes these impellers will last a few years with only periodic use but most will have to be changed yearly if used frequently during the boating season. Different brands of vessels will have the same type of system and are very close to this procedure. The one major difference might be the pump used on the generator but it still should not be a large pump.

After the first time of doing this maintenance item and getting to know your vessel it should only take about 20 minutes to complete this task. The first time might be up to 90 minutes give or take according to what you will study, focus on and observe.

This procedure was done on a 2006 Searay, 280DA with twin 5.0 Mercruiser engines.


Generator Kohler 5E raw water pump impeller removal and installation

!: Help Wd 62525 Lamp !: Buyers Frye Rogan Boots


Twitter Facebook Flickr RSS



Français Deutsch Italiano Português
Español 日本語 한국의 中国简体。