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Genuine Mazda MPV Crankshaft Timing Gear
Crankshaft Sprocket- Select Vehicle by Model
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1 Crankshaft Timing Gear found
Mazda MPV Sprocket Part Number: JE15-11-321
Mazda MPV Crankshaft Timing Gear
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Mazda MPV Crankshaft Timing Gear Parts and Q&A
- Q: How can the tension of a loose balance shaft drive chain be adjusted without removing the Crankshaft Timing Gear cover on Mazda MPV?A:In the case of possible excessive noise caused by a loose balance shaft drive chain, tension needs to be adjusted even without taking off the Timing Chain cover. Start by putting the number one cylinder at top dead center and unhooking the cable off the negative end of the battery. Open the Valve Cover and oil pan and then remove the large bolt in the front of the crankshaft and slip the pulley off, trying to keep the crankshaft still using a screwdriver as required. Then, take off the cooling fan, water pump, alternator and bracket on the timing chain cover and the bolts that joined the timing chain cover and the engine block, prepare a diagram where they are located and remove them. Break the seal of the gasket using a soft-faced hammer on the timing chain cover to remove the gasket carefully to avoid damaging the gasket faces. Take the chain guides that are marked A, B, C and take note of where they are bolted. Re-fit the large bolt in the crankshaft to secure it and loosen the bolts on the balance shafts and the oil pump shaft. As a unit lift off the engine, crankshaft sprocket, balance shaft sprockets and chain, being careful not to drop the keys that index the sprockets. Check the balance shafts, chain, guides, and sprockets, wear or damaged parts should be changed. Prior to reinstallation, make sure that a timing chain is correctly installed and Number One piston is at TDC on compression stroke and has both balance shafts and oil pump attached. Install the balance shaft sprocket, slide the crankshaft sprocket onto the crankshaft and align the chain with the marks on the sprocket. Install sprockets to the maximum extent on their shafts and remake the alignment and fix balance shaft sprocket bolts. Wipe the chain and guides with molybased grease, assemble the chain guides, set the chain slack by turning the balance shafts so that the slack accumulates at a specific position and make sure that the space between the chain and the guides is not too small. Check and tighten the mounting bolts of the guides. Install a new crankshaft front oil seal into the timing chain cover and install a new gasket with sealant to install the cover to the engine, appropriately bolting the cover. Prepare the seal contact surface of the crankshaft pulley to gain grease, slide it to the crankshaft and fasten the bolt fingertight. Lastly, reassemble in the same sequence as the order in which they were disassembled, making sure that after attaching the camshaft sprocket to the camshaft, a new access cover gasket is used.
