Conveyor Slippage

If you are seeing incorrect timing when vehicles near the end of the wash.
 
This problem is caused by slippage in the conveyor drive motor. This can happen for several reasons.
The simple reason would be if the motor is more than a year old and run many cars. Small debrie in the oil can wear channels inside the motor and cause more slippage. This may be a sign the motor needs to be replaced. If the motor is new or less than a year old, here are some things to check:

   The #1 reason for slippage is due to the hydraulic oil. We highly recommend you do not use water base hydraulic oil. Water base oil in many times has been know to cut the life of your hydraulic equipment in half. It also can be responsible for causing slippage. If you have regular oil, check the weight of the oil and the quality of the oil. Cheap oil can break down faster under the intense pressure of a conveyor drive. Also some brands may say S32 on them but not actually be 32 weight oil. If your oil is not 32 weight, or has broken down, drain most of the oil and replace with a higher weight oil.
 
  See if there is a cause of the excessive drag on the
conveyor drive, center, or take-up section and correct it.  Check the
pressure gauge in the power unit.  If it is running 400 - 800 psi (lower
when empty, higher when loaded with multiple vehicles), things are normal.
If the pressure is spiking to 1200 psi when the conveyor is loaded, there is
something wrong.

   To eliminate the remote pulse kit variable, put the proximity
sensor directly on the conveyor.  There is a mounting hole in the motor
bracket on the drive end for the prox sensor.  There are holes in the
sprocket to hold a prox target. You can fabricate a bracket for the
prox sensor on the frame on the other side of the sprocket along with a prox
sensor.  Then the pulse detector is counting real, not virtual, pulses and
if the conveyor bogs down, the prox sensor and the controller will detect
it.

   If it is defective, replace the motor, but this is rare.  If the
motor is slipping and the pressure is low, there is something wrong in the
motor, but the motor is not necessarily defective.  There may be
construction debris in the hydraulic system that got caught in the motor.
With the conveyor unloaded, reverse the conveyor by moving the lever
in the power unit the complete oppsite direction (Fwd. / Nuetral / Rev.)
and run the motor backward just for 2 seconds to try to dislodge the
debris and dump it into the tank where it can get filtered out.  If this
does not work, you may want to replace the motor, BUT, this is a last
resort because the motors are expensive.  A warranty claim can be filed
on the replaced motor, but if the motor is returned for warranty and there
is nothing found wrong with it, the motor will be returned to the customer.


*We suggest this maintenance be performed by an experience Tommy equipment technician. This is not a step by step bude but rather only suggested ideas.