Header banner
Revain logoHome Page
Ian Bates photo
1 Level
1270 Review
56 Karma

Review on Optimized for SEO: CTA Tools 8099 Push-Puller by Ian Bates

Revainrating 1 out of 5

NOT a real pusher/puller! The compression nut is useless and redundant due to a common design flaw!

Good. Whether you call it a pusher or a pusher depends on the vantage point you're looking at, which I think means you can actually pull something relative to another thing or push something relative to another thing. But in the classic sense, with a real pusher/pull you can push or pull each piece relative to each other, no matter what perspective you're viewing what's being pulled or pushed! Позвольте мне объяснить это утверждение, описав, как должен работать толкатель-выталкиватель (в отличие от простого классического "вытягивателя", которым на самом деле и является CTA 8099): серебристый, прямоугольная часть, показанная на рисунках), имеющая простое сквозное отверстие без резьбы downtown. The "jacking screw" (large black threaded screw in the pictures) must go freely through this center hole. The "compression nut" then becomes the means of applying the force transferred to the cross block. Once you have connected the 'Leg Bolts' to the Cross Block via the 'Slide Plates' you can use the Compression Nut to push OR pull by holding the Compression Bolt in axial position on the square flat surfaces on the outboard end of the Compressor. Screw by turning the union nut. Whether you place the compression nut inside or outside of the cross block will determine how force is applied to the system. The jacking screw should also have a short section of smaller diameter threads on the pointed end to allow you to securely attach accessories to the jacking screw itself. This feature, combined with the fact that the jacking screw must slide freely through the cross block (with any force applied by adding a jacking nut instead of the force generated by the interaction of the jacking screw's external threads and the internal threads of the cross block bore itself) is, which ultimately allows the device to be considered a real pusher/puller. You see, in the setup just described, you can use a jackscrew to pull AND push against a stationary system. A normal puller just can't do that. I'll give you an example: I was hoping to "pull" the hollow-taper bushing out of the aluminum body hub with this CTA puller. The bushing has no external flange to 'pull' it out of the body and the body does not allow a puller to be fitted to the back of the body to 'push' it out. So, with a real pusher/puller, I could insert the jacking screw through the center of the bushing and attach to the threaded portion of the jacking screw with a smaller diameter "pull plate" that is larger in diameter than the diameter of the bushing. a through hole in the sleeve but with a smaller diameter than the hole in the hub in the body. I could then slide the cross block onto the jackbolt, attach the leg bolts to abut the aluminum body holding the hub, and finally thread the jacknut onto the jackbolt. Finally, by using one wrench to tighten the compression nut, while also using a second wrench to prevent the compression bolt from turning at all, I can "pull" the bushing out of the body. This operation is simply NOT possible with a threaded crossbar puller as the feed screw must be turned to apply the force. As the jackscrew is rotated, the attached "pull plate" unscrews from the end of the jackscrew as the jackscrew is pulled through the cross block, eventually pulling the target off. And that's why the CTA 8099 puller won't work in this app, and that's why this tool can't really be called a real "Push/Puller"! As it stands, the CTA 8099 doesn't live up to the product description or images on Revain and on the CTA website. Model 8099 does NOT have a smaller diameter, short thread jacking screw on the pointed end, NO unthreaded cross block, and DOES NOT have the same heavy duty jacking nut as shown. In addition, since the transverse block is threaded, the supplied union nut is superfluous and therefore useless in any case. And because of all these inconsistencies and imperfections, the CTA 8099 cannot function as a true "push-pull" as described and pictured, and so I am returning it for a refund. PS If you just need a "puller" to remove the bearing from the shaft, for example, the CTA 8099 seems pretty well built and will likely fill the role well. It's just that the CTA shouldn't market it as "push-push" and should update the product description and images to accurately describe and show what the point is. CTA, why even include "forced nut"? Since the cross block is threaded, a jacking nut is absolutely not required! So if you're considering this as a cheaper alternative to OTC 927, it's not. CTA 8099 has half the functionality! (Even the latest OTC 927s are a bit damaged because they no longer have the smaller threads on the jacking screw, meaning they won't work like the older 927s with some special car accessories.)

Pros
  • For removing and installing gears, bearings, shafts, pulleys and other pressed-in parts.
Cons
  • Could have chosen a newer model.