Haulotte 4527A boom lift questions

[dangier_VA]

Hope this is the correct forum.... I acquired a 2017 Haulotte Model 4527A boom lift from private sale in 2019 with about 200 hours. It is in excellent condition and I am happy with it, except for the boom pins and wear pads. There are no grease fittings on the boom pins or means to lubricate the top telescoping boom. I have disassembled the unit twice with a floor crane and scaffolding to lubricate joints with a work time of three days. This lasts about 6 months then everything starts to squeal again. It is stored in a unheated shop out of the weather. When I first acquired the unit, I had to replace the telescoping wear pads as they were all worn out (at 200 hours). The manual I found on line has no mention of lubrication requirements. Anyone had any experience with this equipment?

Thanks in advance,
David