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Old 06-19-2024, 08:04 PM   #1
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Slow penthouse top

I recently purchased a van that received a top in 2016 and did not know that 90sec was not normal up/down time. I've sprayed silicone lube on the joints, struts, and actuator shafts and checked power (12.76v at the actuators) but we're still moving slow (video below). The bars and bolts look straight. Ideas?

https://drive.google.com/file/d/1Kfgm6EuBwWwHmLezLx13aE_UiHsZIAFi/view?usp=drivesdk

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Old 06-19-2024, 08:57 PM   #2
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I too would like a bit more speed for my PH top - without re-engineering the whole darn thing !? Keep us informed !
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Old 06-19-2024, 11:58 PM   #3
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Speed and time seem very normal to me. It is a minute plus to raise and about the same down.

The noise from something binding/ rubbing (?) is not normal.

What is weight (if any) of additions to the roof?

Bonding/Rubbing noise - Does noise happen while raising? Same level of sound?

Can you locate area of the binding noise-
Front cross bar across the roof? Rear cross bar across roof? From the track area - driver or passenger or both ?? Lift the upholstery and observe the actuator, traveling car and attachment points for the lifting bars. Are the rollers rotating freely or are they skipping?

If you can see the actuators - are they extending and retracting smoothly?
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Old 06-20-2024, 05:17 AM   #4
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Check the track everything slides back and forth in; take a clean cloth and wipe along the bottom of the track. You’re looking for metal shavings and some grease. If you have metal shavings then something is grinding against the bottom or walls of that track. You should have grease in there to help everything slide smoothly.
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Old 06-20-2024, 07:26 AM   #5
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How much stuff is on the roof?
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Old 06-20-2024, 07:44 AM   #6
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Minimal weight on top - 3 roof bars and a solar panel.
Same speed and sounds up and down.
Binding noise is difficult to isolate. I feel like it might be bars on roof but are they less likely to be culprits? How would one address those?
What kind of grease do you use? Bearing?
Will check the tracks today.
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Old 06-20-2024, 07:56 AM   #7
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Try putting your hand (safely) on various parts to "feel" the binding as the lift assembly moves. You probably need another person to operate the switch while checking.

The upper horizontal part of the front bar rotates in wood channel, the rear bar travels across a wood face, others can get details/pics. The bars are captured by the ceiling panels. I seem to recall there might be some teflon strips on the rear bar slide area (might be wishful thinking).
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Old 06-20-2024, 08:01 AM   #8
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Quote:
Originally Posted by 1der View Post
T I seem to recall there might be some teflon strips on the rear bar slide area (might be wishful thinking).

Wishful thinking......

I've thrown around the idea of fabricating the top part of the lifting block out of LDPE....but haven't got to that yet. Requires removing solar panel.
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Old 06-20-2024, 08:40 AM   #9
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My top channels were greased, I believe red. The rear channel is the worst, because the top bar needs to slide at least 8 -10 inches.

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Old 06-20-2024, 10:24 AM   #10
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Our rear slide for the cross bar is simply plywood that has been greased (by me). Binding sound certainly could be coming from there. Definitely another funky SMB design decision.
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