Disco 1 cruise control vacuum pump

I have an AP150? in my RRC 3.9, the tech fitted one with pulse from the VSS and I have bought a new "motor" from Command a couple of years ago. They have great tech assistance and a very helpful to the extent of sending me a new loom.
I am pretty sure you could get a new motor for an AP 50. AFAIR they are about $125.
Mine runs on engine vacuum, and is fine except that sometimes there is not quite enough vacuum at full throttle to kick down on long steep hills.
Regards Philip A

I have fitted AP60's to 3 Triumph 2500's and 2 to Triumph TR7's. Have just finished fitting another to a 1951 Austin A90 which is positive earth. That was a bit more of a challenge. For the price, they are excellant.

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Originally Posted by bee utey

Ebay to the rescue:

Cruise Control Kit AP60 Universal Fit, DIY 1yr Warranty | eBay

COMMAND AP60 VACUUM ACTUATOR DIY CRUISE CONTROL | eBay

I have fitted a couple over the last few years, including a 300TDi in a RRC and a 2.8TD Rodeo. Used brake vacuum in both cases, ran well that way.

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Gday bee utey

I bought an AP60 unit off ebay and now everything is fitted. All I have to do now is wire up power to the ignition, connect to the brake switch and get the vacuum from the booster line.

With the vacuum I am a bit concerned it will be tricky to get a good join/seal at the T piece as the existing line is very rigid. Obviously I dont want to compromise the braking in any way. Did you tap into the original line or replace it with something easier to work with?

thanks

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Originally Posted by Linds

With the vacuum I am a bit concerned it will be tricky to get a good join/seal at the T piece as the existing line is very rigid. Obviously I dont want to compromise the braking in any way. Did you tap into the original line or replace it with something easier to work with?

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I think there might be a vacuum line feeding some of the heater controls on the D1. My RRC certainly does at least so it may be worth checking that out first before cutting into the brake hose.

pretty sure my D1 is all mechanical - the vent selection and the heater control seems to be. Maybe the recirc switch? There is only the one outlet on the vacuum pump that I can see. I think bee utey just used the brake line - maybe he can shed some light on this.

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Originally Posted by Linds

pretty sure my D1 is all mechanical - the vent selection and the heater control seems to be. Maybe the recirc switch? There is only the one outlet on the vacuum pump that I can see. I think bee utey just used the brake line - maybe he can shed some light on this.

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Actually I cheated, the RRC with the 300TDi doesn't have a vacuum brake booster so I just hooked the vacuum pump straight to the cruise. Next week I will have a D1 300TDi in and will have a look at possible fittings.

bewdy thanks

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Originally Posted by Linds

bewdy thanks

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Today there were TWO 300TDi's here, one I'm working on and the RRC mentioned below dropped by. So it's really easy. The brake vacuum pipe is ended by a piece of rubber hose and a hose clamp straight on to the vac pump. Just pull off the hose & clamp, find a 40mm length of matching hose, a suitable tee piece and refit with the tee between the old hose and the short new bit. Easy really.

thanks bee utey

The vac pump on 300 tdi is a pulse type, pulling vac down in the brake booster incrementally. Perhaps a one way valve in the cruise control line might even out its performance?

fwiw

Pete