O.K. the premise:
I think it's been suggested that a particular failure mode of the diff lock system (sucking hydrolic fluid into bad places) is the result of the vacuum pump not turning off (as it is supposed to) after reaching a set vacuum pressure, therefore over sucking if you will. Mine appears to stay on indefinitely. It's also been mentioned that fixing the switch that turns it off isn't much help becuase it doesn't last very long and your back to full on vacuum pump.
Oh yeah, and the purpose of the vacuum pump is to boost the vacuum pressure to help engage the diff locks. But the 300gdt (turbo diesels) doesn't use any vacuum pump because diesels have lots of system vacuum pressure.
Next, i have my diff locks re-wired so i can activate in any order. The vacuum pump, however, only comes on with the center. THis has turned out not a problem, becuase as it was speculated, there's enough system vacuum pressure in the g500's that the front and rear engage fine without the aid of the vacuum pump. IN fact its my preferrence now becuase then i don't have to listen to the noisy pump nor fear the vacuum pump over sucking. Perhaps the vacuum pump system was designed with small gas motors in mind such that the vacuum pump is unnecessary for the bigger g500's and ofcourse the diesels.
The question:
Is it possible that i don't need the vacuum pump for the center too? Or does the center lock require something more? Could i cut out the vacuum pump from the system entirely (with a switch for example) and avoid any failure modes associated over vacuuming the locker system... and have a quieter locker system.
Thanks ahead of time.
I think it's been suggested that a particular failure mode of the diff lock system (sucking hydrolic fluid into bad places) is the result of the vacuum pump not turning off (as it is supposed to) after reaching a set vacuum pressure, therefore over sucking if you will. Mine appears to stay on indefinitely. It's also been mentioned that fixing the switch that turns it off isn't much help becuase it doesn't last very long and your back to full on vacuum pump.
Oh yeah, and the purpose of the vacuum pump is to boost the vacuum pressure to help engage the diff locks. But the 300gdt (turbo diesels) doesn't use any vacuum pump because diesels have lots of system vacuum pressure.
Next, i have my diff locks re-wired so i can activate in any order. The vacuum pump, however, only comes on with the center. THis has turned out not a problem, becuase as it was speculated, there's enough system vacuum pressure in the g500's that the front and rear engage fine without the aid of the vacuum pump. IN fact its my preferrence now becuase then i don't have to listen to the noisy pump nor fear the vacuum pump over sucking. Perhaps the vacuum pump system was designed with small gas motors in mind such that the vacuum pump is unnecessary for the bigger g500's and ofcourse the diesels.
The question:
Is it possible that i don't need the vacuum pump for the center too? Or does the center lock require something more? Could i cut out the vacuum pump from the system entirely (with a switch for example) and avoid any failure modes associated over vacuuming the locker system... and have a quieter locker system.
Thanks ahead of time.