Thermo King SLXi Spectrum, Руководство по обслуживанию

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Engine Maintenance 9-40
SLX, SLXe Upper Belt Replacement
NOTE: For SLX and SLXe units with tensioner service p/n: 78-1904 installed, refer to the below procedure for upper belt
replacement.
1. Place the tensioner tool socket over the head of the tensioner (4) pivot bolt. Screw the tool fixing bolt into the tensioner base.
Make sure that the tensioner tool is secured tightly in position.
2. With a 19 mm wrench turn the tool until belt tension is released, engage tool pawl to lock the tool with the belt tension in a
loose position and the belt is slack enough to be removed. Do not tighten the tensioner assembly more than needed to remove
the belt. Remove the wrench as a safety precaution.
WARNING: Do not put fingers between the belt and the tensioner assembly.
3. Loosen the sliding pulley centre bolt (5) and push sliding pulley to it’s furthest position.
4. With a suitable air or electric or hand ratchet socket, loosen the 3 x 6mm top fan blower air inlet cowl (12) as far as it’s end
stops. this allows the inlet cowl to be moved away from the upper fan blower and the belt to be passed between the upper fan
blower and it’s inlet cowl.
5. Remove the old belt and install the new belt correctly on the pulleys - taking care over the belt routing
6. Refit the top fan blower air inlet cowl - reverse of step 4.
7. With the new belt correctly installed in it’s Poly-V Grooves, pull the sliding pulley (5) to apply tension to the belt. Tighten
and lock the sliding pulley into position.
8. Use a 19mm wrench and the pawl release mechanism and carefully release the tensioner assembly checking the belt is
correctly set in the Poly-V Grooves
9. Remove the tendioner tool
Note: -Adjustment of the Upper Belt length while in service
Follow steps: 1, 2, 3, then 7, 8, 9
Using Belt Frequency Measuring Tool
This tool measures the resonance frequency of the stationary belt. A loose belt will have a lower resonance than a tight belt.
1. Switch on the tension gauge. The device will first perform a power-on self test. The gauge is ready to start measurement when
0000 appears in the display.
2. Hold the gauge over the flat side of the belt (2) half to be measured so that the sensor (1) is centred above the section to be
measured at a distance of about 1 to 20mm. Generally, it applies that with light coloured materials having good reflection
properties the sensor can be held further away and dark colours closer to the belt. A red beam spot on the belt shows the
position of the sensors above the belt.
3. Strike the belt so that it starts to vibrate. Try to generate uniform vibrating motion with sufficiently high amplitude.
4. The vibration frequency in Hz is indicated in the display. An acoustic signal confirms measurement success
See below - 1. Sensor, 2. Belt
.