Question about 1994 Mazda MPV
It is an automatic tensioner system that uses hydraulic fluid pressure to maintain the correct tension on the drive belt. You cant press it back inside with any hand tool, the pressure is just too great. It can be reset by placing it into a bench vise (A large one!) and slowly pressing the pin back into the cylinder till an alignment hole in the push pin aligns with one on the main cylinder. then insert a holding pin (Available at all auto parts houses, cheap too) through the housing, center pin and out the other side of the housing. Release it from the vice and you are ready to reinstall. It will be the pulley directly below the firewall side camshaft pulley, and is secured with two bolts 12mm heads.
Posted on Dec 12, 2014
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Posted on Jan 02, 2017
if this model is a 4 x 4 you can replace it without removing the engine if it is front wheel drive ykou have to remove the engine to do that,
Posted on Jul 08, 2009
I was browsing unsolved problems. If you still have the problem, I'll try to help you. But it's going to be awhile trying to communicate back and forth. First...Check the engine for spark. Take off a plug wire and stick a screw driver in the wire end and place the metal part of the screw driver next to something on the van that's metal. Have someone crank it over for just a second or two and see if a small spark jumps from the screw driver to the metal part. I'll check back for your answer.
Posted on Mar 15, 2010
REMOVAL & INSTALLATION
Because serpentine belts use a spring loaded tensioner for adjustment, belt replacement tends to be somewhat easier than it used to be on engines where accessories were pivoted and bolted in place for tension adjustment. Basically, all belt replacement involves is to pivot the tensioner to loosen the belt, then slide the belt off of the pulleys. The two most important points are to pay CLOSE attention to the proper belt routing (since serpentine belts tend to be "snaked'' all different ways through the pulleys) and to make sure the V-ribs are properly seated in all the pulleys.
Although belt routing diagrams have been included in this section, the first places you should check for proper belt routing are the labels in your engine compartment. These should include a belt routing diagram which may reflect changes made during a production run.
Fig. 2: Relieve the belt tension by pivoting the automatic tensioner away from the belt, then remove the belt
Fig. 3: Verifying serpentine belt alignment in the pulley
Fig. 4: Fig. 1 Accessory V-belt routing (alternator) — Mazda MPV 3.0L engine
Fig. 5: Fig. 2 Accessory V-belt routing (power steering) — Mazda MPV 3.0L engine
Fig. 6: Fig. 3 Accessory V-belt routing (A/C compressor) — Mazda MPV 3.0L engine
Posted on Jul 08, 2010
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