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CVT Water to Oil Cooler

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00:00:29.860
CVT water to oil cooler temperature
00:00:34.600 00:00:34.610 control is very important on the CVT
00:00:37.049 00:00:37.059 transmission a water-cooled CVT fluid
00:00:41.650 00:00:41.660 cooler has been installed on modern cvts
00:00:45.510 00:00:45.520 the CVT fluid cooler has been installed
00:00:49.450 00:00:49.460 to the front of the transmission to make
00:00:51.670 00:00:51.680 it shorter for the oil passage the CVT
00:00:55.290 00:00:55.300 uses transmission fluid in basically the
00:00:58.390 00:00:58.400 same manner as a regular automatic
00:01:00.240 00:01:00.250 transmission albeit at much higher
00:01:03.130 00:01:03.140 pressures oil from the oil cooler is
00:01:06.790 00:01:06.800 first normally directed to the clutch
00:01:08.860 00:01:08.870 plates to prevent overheating of the
00:01:11.230 00:01:11.240 friction surfaces there is a torque
00:01:15.040 00:01:15.050 converter filled with the fluid and a
00:01:17.800 00:01:17.810 pump which circulates the fluid through
00:01:20.320 00:01:20.330 the system control valve body and CVT
00:01:23.469 00:01:23.479 variator pulley mechanism there also is
00:01:27.190 00:01:27.200 a cooler flow valve that controls the
00:01:29.859 00:01:29.869 oil flow through the cooler there are
00:01:33.219 00:01:33.229 two oil cooler pipe connections on the
00:01:35.859 00:01:35.869 front of most CVT casings an oil cooler
00:01:41.170 00:01:41.180 is fitted alongside the radiator to
00:01:43.510 00:01:43.520 maintain the transmission oil
00:01:45.130 00:01:45.140 temperature between 80 and 120 degrees
00:01:48.609 00:01:48.619 centigrade or 176 to 248 degrees
00:01:53.740 00:01:53.750 Fahrenheit installation of a
00:01:56.859 00:01:56.869 transmission oil cooler will assist with
00:01:59.109 00:01:59.119 towing and operation with full loads or
00:02:02.139 00:02:02.149 under hot conditions most owner's
00:02:06.099 00:02:06.109 manuals recommend reduced towing and
00:02:08.800 00:02:08.810 avoiding continuous operation on hills
00:02:11.140 00:02:11.150 at hot temperatures on CVTs without oil
00:02:14.980 00:02:14.990 coolers it's important to get an
00:02:17.470 00:02:17.480 excellent cooler and preferably one with
00:02:19.990 00:02:20.000 large diameter tubing some CVT s do have
00:02:24.160 00:02:24.170 a small oil cooler mounted right on the
00:02:26.710 00:02:26.720 transmission case others employ a cooler
00:02:30.339 00:02:30.349 similar to regular automatics in between
00:02:33.309 00:02:33.319 the radio
00:02:33.880 00:02:33.890 Aitor if you're not towing over 1,350
00:02:39.070 00:02:39.080 pounds in hot temperatures on long
00:02:41.590 00:02:41.600 stretch climbs you're fine and better
00:02:44.110 00:02:44.120 off leaving it alone
00:02:45.720 00:02:45.730 so to recap about the CVT oil coolers
00:02:50.110 00:02:50.120 most cvts do have one those CV T's that
00:02:55.060 00:02:55.070 don't you can add one if doing lots of
00:02:57.730 00:02:57.740 towing operating in hot weather or
00:03:00.010 00:03:00.020 climbing lots of elevations remember as
00:03:04.630 00:03:04.640 we've said in other articles the new CVT
00:03:07.930 00:03:07.940 transmission fluid does change in volume
00:03:10.390 00:03:10.400 as it reacts to temperatures changes in
00:03:14.650 00:03:14.660 all cases the only way to minimise the
00:03:17.350 00:03:17.360 slowdown or gearbox overheated warning
00:03:20.259 00:03:20.269 light on CVT equipped vehicles is by
00:03:23.110 00:03:23.120 adding a transmission oil cooler or oil
00:03:25.630 00:03:25.640 to water heat exchanger as some call it
00:03:28.420 00:03:28.430 as a final note be very careful if
00:03:32.020 00:03:32.030 installing an aftermarket CVT oil cooler
00:03:35.560 00:03:35.570 not to get air trapped in the cooler
00:03:37.750 00:03:37.760 lines or make the lines too long the CVT
00:03:42.400 00:03:42.410 oil pump is a high pressure high
00:03:44.680 00:03:44.690 efficiency pump that doesn't react well
00:03:47.259 00:03:47.269 to pressure differential changes so an
00:03:51.250 00:03:51.260 improperly installed oil cooler can
00:03:53.770 00:03:53.780 destroy the oil pump
00:03:59.170 00:03:59.180 you

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