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"Brandon" <c322348@yahoo.com> wrote:
> The fan clutch works off of the power steering pump. When the vehicle is
> cold the fan switch is energized, which bypasses hydraulic fluid so it
> doesn't activate the fan clutch. This also happens when you go to full
> throttle, thus activating the time delay feature in the time delay module.
Not quite... Hydraulic pressure is required to *disengage* the fan
clutch. Thus, applying power to the solenoid valve opens it, thus
applying hydraulic pressure to the clutch, thus disengaging the fan.
It's designed so that most failure modes will result in the fan being
engaged.
> What I would do is disconnect the time delay module connector. This causes
> the system to go into "emergency" mode, where the fan runs continuously.
I think you would actually want to not do that. Unplugging the fan
controller would put the system in "emergency" mode, but that means
that the solenoid valve is closed.
It looks to me like the fan clutch is downhill from the control valve.
Thus, it should get bled when you do a regular power steering system
bleed, as long as the fan control system is working properly and is
trying to disengage the fan. I think the air shoud bubble up from the
clutch to the valve, and get bled out through the fluid return hoses
into the reservoir. I suspect that there aren't separate instructions
for bleeding the fan clutch because it gets bled when you bleed the
power steering system. The manual describes how to do that, and it
sounds like a fairly simple job.
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This archive was generated by hypermail 2b29 : Tue Apr 04 2000 - 21:57:06 PDT