HOW TO REPLACE THE ENGINE (BATTERY) THE PROPER WAY with a OBD — KAM Toll — on MOTORHOME

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RVs typically have two categories of batteries: house and starting. We will replace the engine start battery and show How You can do the job yourself the proper way. Replacing a battery is a quick and easy job in RVs with a few tools. Note: do not touch with your bare hands, if you see sulfuric acid powder on the battery it will burn your skin.
Buy the correct replacement battery. Find out what kind of battery you’re replacing (or the dimensions of your battery) and bring this, your car’s make, model and engine size information to a local auto parts store. This is important because automotive batteries vary in size and electrical capacity and you will want to purchase a battery which matches the size of the battery tray/support in your vehicle. In some areas of the US, you will be charged a «core» fee when you purchase a new battery, if you bring in your old battery after or when purchasing your new battery you will not get charged this fee. Before Removing the Battery:
Set up a secure working environment a safe distance from sparks or open flames. Remember that electricity is not the only danger; batteries contain a sulfuric acid electrolyte solution, which is highly corrosive (can burn your skin) and produces a flammable hydrogen gas. Put on gloves and safety goggles.
Plug in the memory keeper (KAM) into the OBD plug. This tool will keep the PIN codes and settings for radios and navigation systems from getting erased when you disconnect the battery. If you don’t have a memory keeper make sure you have all the PINs for your electronic equipment before you start. You may wish to check your car manual to see what devices may be affected.
Locate the positive and the negative terminals of the old battery. The positive terminal will have a plus sign (and is often red) and the negative terminal will have a minus sign (and is often black). Disconnect the negative terminal. Loosen the negative cable clamp with a wrench (Usually 8mm or 10mm) and slide it off of the terminal. If the cables are unmarked, label them so that they don’t get mixed up (otherwise you may ruin your car’s electric system later on). It is also important that you disconnect the negative terminal socket before the positive terminal socket. Otherwise, you may short circuit the positive terminal to a grounded part of the car. Unfasten the battery holder and remove any screws, clamps or bars holding the battery in place if any.. Carefully lift the battery out of the car. Remember that a battery can weigh 30 to 60 pounds, or 13.5 to 27 kilos, so if you have any back problems, get a helping hand. Put in the New Battery Clean the terminal clamps and the battery tray. You can use a baking soda solution and a wire brush. If there’s any severe corrosion to the terminal ends or the cables, consider repair or replacement by a mechanic. Otherwise, let the area dry before moving onto the next step. Place the new battery where you just took the old battery out, with the positive and negative terminals on the correct sides. Connect all the screws, clamps or bars that may hold the battery in place. Reconnect the positive terminal’. Tighten the clamps using a wrench.
Reconnect the negative terminal. Tighten the clamp with the wrench.
Spray battery lithium grease. Check that all the electronic devices are working properly. Remove any battery memory saver that was installed to save the radio memory.

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My Motorhome is a 2003 National Dolphin LX model 6320.
W 22, Workhorse Chassis
8.1 Vortex Engine
340 HP
Allison Transmission 1000 Series, 5 speed automatic overdrive.
Suspension: KONI shocks.
BLUE OX AVENTA II BX7335 TOW BAR 10,000 POUND CLASS IV RV TOWBAR
Toed brake assist: Brake Buddy.
Tires: Goodyear 245/75R22.5 134/132L G G661 HSA.
EEZRV TPMS.
Onan Generator: Marquis Platinum 5500 Fuel Injection.
Lights: LED Bulb 102-3528SMD DC 12V Cool White.
DOMETIC Refrigerator NEW DIMENSIONS MODEL NDR 1062.

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