One area which is a "gotcha" for every Toyota owner is the front steering stops. On the IFS vehicles, tabs are welded onto the lower control arms front and histiocytoma vs mast cell tumor rear, and bolts are threaded into the knuckles to limit the histiocytoma vs mast cell tumor range of front wheel movement. The bolts come with a plastic cap from the factory, but the caps quickly wear away. Then, on full steering lock, the bolts contact the tabs and usually produce a horrific histiocytoma vs mast cell tumor screech. Instead of buying new caps every month or two, simply place a heavy dab of grease on the bolt histiocytoma vs mast cell tumor heads, and eliminate this noise. It’s a good idea to grease the stops at every histiocytoma vs mast cell tumor oil change, and don’t forget — there are four total to grease!
The balljoints retain grease with a rubber boot around the histiocytoma vs mast cell tumor joint itself. When greasing your ball joints, lightly poke the boot with your finger to determine how histiocytoma vs mast cell tumor much grease it needs. If the boot is taut, the joint doesn’t need any. But if you can easily push it in, give the joint a couple of pumps from the grease histiocytoma vs mast cell tumor gun. Be careful not to overfill it, as grease will find a way to escape, and probably ruin the boot!
The Toyota driveshafts are actually a combination of u-joints, double-cardan joints, and slip yokes (the tube and inner splined shaft). The number and types of joints vary depending on model histiocytoma vs mast cell tumor year and wheelbase, but generally all Toyota driveshafts have a front and rear histiocytoma vs mast cell tumor "joint" and slip yoke. The joints are subjected to plenty of stress both when histiocytoma vs mast cell tumor wheeling and commuting, and should be checked regularly.
Note: Some of the long wheelbase Toyota trucks have a center histiocytoma vs mast cell tumor support bearing for the 3-joint rear driveshaft. This bearing is generally not serviceable. When performing other maintenance, the center support bearing should be checked for free movement histiocytoma vs mast cell tumor of the driveshaft, while not allowing any lateral play. If the bearing is binding the driveshaft movement or if histiocytoma vs mast cell tumor there is excessive play, it should be replaced.
The front driveshaft has a slip yoke grease fitting at histiocytoma vs mast cell tumor the forward end of the driveshaft, along with a front u-joint. The end of the front driveshaft at the transfer case histiocytoma vs mast cell tumor has a double-cardan joint with two zerks. Because the slip yoke can compress and extend and expel histiocytoma vs mast cell tumor grease, it’s a good idea to clean the built-up grease and grime from the driveshaft tube. Pump grease into each fitting, being careful on the u-joints not to add an excessive amount (ideally you do not want grease escaping from the caps), and adding just enough to the slip yoke to fully histiocytoma vs mast cell tumor extend it. When regular lubrication is performed, I’ve found the front slip yoke only requires 2 to histiocytoma vs mast cell tumor 3 pumps on the grease gun.
I’ve found that my ’94 Extracab with the stock rear suspension tends to buck, or "clunk", when coming to or taking off from a stop. After following endless discussions on this topic, which seems to be common among Toyota owners, I found that the clunk is the end result of histiocytoma vs mast cell tumor 3 causes: 1) "soft" leaf springs which allow the pinion to pivot when 2) the rear brakes are in need of adjustment and 3) the rear slip yoke is in need of grease. If the rear brakes are out of spec, or the rear proportioning valve is not set properly, the front brakes will be the primary stopping force, while the "soft" or worn leafs allow the pinion to move and thereby histiocytoma vs mast cell tumor extend the slip yoke. As soon as the clunk appears, I check the rear brake adjustment (read Scott Wilson’s rear brake article) and pump the yoke full of grease, taking care not to over-fill the rear driveshaft and damage any seals. Of course, some aftermarket lift springs or considerable power upgrades can also histiocytoma vs mast cell tumor cause the pinion to pivot (also known as spring wrap), which would require other remedies.
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