Profender was Started in Thailand in 1976 to create general performance shock absorbers for decide-up vans and industrial cars. They just lately expanded into developing functionality shocks, coilovers, bypasses, and hydraulic bump stops to fulfill the escalating requires of off-highway fans in Thailand and all over the world.
Preliminary Impressions
In addition to the harm to the higher coil nut as well as the very poor packaging, the shock in general appears to get perfectly made with components similar to the best brands. On closer inspection even though, we did find a couple of things that jumped out at us:
The reservoir hose is marked "strain washer hose".
The decrease wiper seal sticks out and contacts the rubber bump.
The misalignment spacers appear to be glued into the bearings.
The bearings have a little bit of facet to aspect Engage in in them.
Disassembly
Opening a Profender coilover is completed by following conventional functionality shock servicing processes. Profender employs three socket head cap screws to hold the wiper cap in position and once These are eliminated the cap will easily slide from just how. Pushing down about the seal cap assembly exposes the retaining ring that may be taken off using a screwdriver or decide on. While using the retaining ring removed, the shaft assembly could be pulled out on the shock as well as oil may be drained into a clean container for inspection.
The retaining rings and o-rings around the seal cap are huge.
The shaft assembly took some power to get rid of as the seal cap and piston develop a restricted seal Together with the cylinder (an excellent factor).
There was a large amount of assembly lube and particles during the shock oil, but nothing metallic.
Removing the best cap needed a 24" adjustable wrench and moderate degree of heat from the torch but as soon as the thread locker loosened up the cap came out nicely. The fitting on the reservoir hose has a slim nut on it which was astonishingly difficult to clear away and resulted in a few unlucky damage to the best cap. The upper bearing is a good in good shape and held in place by two snap rings. An extra deep socket was necessary to healthy above the misalignment spacers to tap out the bearing since they are non-removable.
Eradicating the very best cap exposed a big quantity of surplus assembly lube that seems to own rusted or corroded.
Not with the ability to clear away the misalignment spacers in the bearing created taking away the bearing snap rings a battle.
The reservoir fitting was sealed with abnormal amounts of Teflon paste.
Aside โช้ค profender from the awkwardly slim reservoir fittings which are difficult to get a standard wrench more than, the reservoir arrived aside efficiently. The end caps are held in position with retaining rings and each conclusion was sealed with excess-large o-rings.
The elements Have a very looser fit in the reservoir cylinder when compared to the components found in the shock entire body.
The slender reservoir fittings and abnormal Teflon paste created getting rid of the hose under pleasant.
The outside of the reservoir provides a machined finish, quite possibly to help with cooling.
Coilover Hardware
Profender coilovers utilize a pinch fashion higher coil adjustment nut with external ports for your pin fashion changing wrench. The threads to the cylinder are sq. Slash along with the coil nut rotates smoothly and securely alongside them. The quit nuts, however, ended up wedged and would not transfer freely. The slider is the same plastic design slider located on most other makes of general performance coilovers and it is a really comfortable in shape over the cylinder. The lower spring plate is really a slotted flat plate layout that sits securely over the lessen rod close but, oddly plenty of, will not in shape a lot of 3.0 ID coil springs.
The higher coil nut is very well built and rotated smoothely and securly to the cylinder.
The end nuts did not shift freely and took loads of get the job done to get rid of by turning them little bit by bit.
The slider is identical to all kinds of other shocks and is also a tight more than enough in shape to carry itself up about the cylinder.
The lessen spring plate seems pretty pleasant, nonetheless, we found that 4 in the five springs we examined didn't in shape.
Shock Shaft and Piston Assembly
The shaft and piston assembly during the Profender coilover includes most of the same components found in most significant efficiency shocks they usually all appear to be quite top quality. The piston is CNC machined metal with nice compression and rebound ports. You will find 2 bleed holes with a third marked for drilling if necessary. Disassembly was simple plus the shims were being in a typical pyramid stack using a top rated out washer over the compression facet.
Piston and reduce seal cap can be a exact and snug slot in the shock cylinder with Pretty much no Enjoy.
The have on band over the piston is thick, heavy responsibility, and closes to an exceptionally restricted suit.
Although the wiper seals truly feel a little soft, the DU bushing is a comfortable match to the shaft.
The lessen rod conclusion essential a 24" wrench and a substantial amount of heat to eliminate.
The non-removable misalignment spacers all over again manufactured extracting the bearing a pain.