Happijac TC jacks stop, no light
2007 NL 10'2QRR. tag says 2425# dry, but I beleive wet and equipment is closer to 3500# (haven't checked). HJ system with wired remote and 4500/4150 jacks. When loading the camper from the ground ...
Forum Discussion
I have several pdf files but can't attach them. They basically are some schematics for the two series of jacks as well as maintenance procedure on the motor and disassembly instructions for removing the inner tube. Happijac said the following in email:
My main question is, based on the text does it sound like I am expected to fully disassemble the jacks every 6 months to apply lubricant to the innards of the jack, or is it inspection every 6 months with lubrication of the motor and upper gears typically and only lubrication of the screw as needed.
I'm planning on calling Happijac today to see if I can get clarification. My local dealer says they typically don't do anything with the jacks unless there is an issue. Perhaps they aren't the best to speak to about TC jacks if that's the case.
The ACME (4100, 4200, 4220 and the 4800, 4820 series) jacks need to have white lithium grease on all parts including the motor head, upper assembly and the top gears.
The BALL SCREW (4500 and 4600 series) jacks need to have TRI FLOW on the inner leg lift screw and white lithium grease on all other parts including the motor head, upper assembly and the top gears.
TRI FLOW is a spray on lubricant (pick up at any home improvement, auto supply or bicycle store) and sprayed on the extended lift screw of the inner leg. Clean the inner lift screw and then work the TRI FLOW back and forth several (20 plus) times to work the lubricant thru the ball screw.
The 4600 series ie 4600/4660 are the only models that have the quick release feature.
The 4500/4560 series and the 4600 series jacks are ball screw jacks.
The 4150/4160 series jacks have the ACME lift nut.
The 4800 jack is 3” longer and is a heavy duty ACME jack, it is zinc plated as well as powder coated on the outer tube.
All 60 series jack have zinc plating and powder coating.
The ACME jack rate at 1500 lb.s
The ball screw jack rate at 1900 lb.s
The 4800 jack rates at 2800 lb.s
My main question is, based on the text does it sound like I am expected to fully disassemble the jacks every 6 months to apply lubricant to the innards of the jack, or is it inspection every 6 months with lubrication of the motor and upper gears typically and only lubrication of the screw as needed.
I'm planning on calling Happijac today to see if I can get clarification. My local dealer says they typically don't do anything with the jacks unless there is an issue. Perhaps they aren't the best to speak to about TC jacks if that's the case.
