Happijac lubrication
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Forum Discussion
jjinatx wrote:
My 2002 4100's have only 1 lever for the motor release lever but it doesn't function as a "quick release".
The difference between the4500/4600 and the 4100 is a lot, though they look the same externally. 4500/4600 is rated for 1900# of lift and the 4100 for 1500#. Internally they are different as well (I'll post pics later). The specs for the 4150 are the same as the 4100, so I assume it's the replacement like the 4600 for the 4500? The 4100/4150 is about $100 cheaper than the 4500/4600.
You could replace a 4100 with a 4500/4600, but NOT the other way around, so if you want a single spare, get a 4500/4600.
-jj
Ok, I see. Just having a lever doesn't mean quick release. The quick release allows you step on the jack foot and push it to the ground. The 4600 has that but the 4500 doesn't. Both are recirculating ball instead of acme screw design of the 4100/4150's, hence the higher weight rating.
