Retarder for PT36

[krminyl@...]

I will give you a layman's explanation (as I've been told) of how the
retarder works....

It is a integral to the transmission, where when activated, forces
transmission fluid into a compressor-fan type of device, putting trans fluid
backwards
through the trans, creating drag, thus slowing the vehicle. The downside is
since the trans fluid in the retarder is creating drag (friction), the trans
fluid absorbs the heat very rapidly thusly you have to keep a close eye on
the trans retarder temp, and the trans fluid temp. If it is overheated, it
looses it's lubricity, and ability to dissipate heat, with the potential of
damaging the trans. The trans fluid cools down quickly once it heats up, and
the faster you can get the fluid through the coolers/trans, the better (lower
gear, spinning up the RPM's). I use the retarder all the time, even when
driving around town, but I always keep one eye on the retarder temp, and one on
the road ahead. Secret is NOT to go too fast....use the retarder on down
hills to slow you down, and use the service brakes and the retarder alternately
to keep your speed well below what you would deem safe in a car.

The dashboard Retarder rocker on/off switch either turns the system on or
off, and the lever you move up and down modulates the amount of braking (full
down max, all the way up minimal)

I know....it's a layman's explanation...if you want something more
technical, refer to your Allison book, or your BB Blue Book if you have 'em.

Best of luck....

Kevin McKeown
Yorba Linda, CA
1986 38' PT



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