16
1. Turn engine control panel off. Press Red stop button on panel, do not reset.
2. Turn remote off and remove remote key.
3. Remove belt cover.
4. Loosen four engine cradle lock bolts two on each side of the cradle. Only loosen
slightly to allow cradle to slide up.
5. Loosen the jam nut on each adjuster bolt, two total.
6. Tighten the adjuster bolts. Adjust each bolt a turn at a time to keep the engine level.
7. Check tension with Gates Sonic Tension Meter as follows:
a ) a )
Connect Microphone to meter
b ) b )
Press POWER to turn meter on.
c ) c )
Press Hz to switch readout to Hertz.
d ) d )
Press MEASURE. Display should change to a horizontal line.
e ) e )
Hold the microphone about 1/2 inch away form belt at the midpoint of the
front span of the belt.
f ) f )
Strike the belt with hand.
g ) g )
Horizontal line on meter should change to a wavy line and read out the
frequency in Hertz.
Meter will not read a frequency less than 15Hz, so belt has to be fairly tight be-
fore the meter can read the frequency. High ambient noise levels can also pre-
vent the meter from reading the frequency.
8. Repeat steps 5 and 6 until belt tension on a 75 hp RoadHog is 41-42 Hz and 38-
39Hz with belts that have more than 100 hours.
9. Tighten jam nuts on both adjustment bolts and the lock bolts on the side of the
cradle
10. Start unit, engage clutch for 2-3 minutes. USE CAUTION WHEN BELTS COVER
ARE OFF!
11. Repeat steps 1 and 7 and recheck tension, adjust if necessary.
12. Reinstall all belts covers. Re-check belt tension at 100 hours thereafter, or if belt
slippage is detected. Belts with more than 100 hours should be set at 38-39Hz.
BELT TIGHTENING PROCEDURE
RH3075 and RH4075
Summary of Contents for RH3075
Page 27: ...27 1 1 2 16 4 10 3 12 5 1 Clutch Group...
Page 31: ...31 106 0659 ELECTROHYDRAULIC VALVE Tilt depth and sideshift control 1 6 2 3 3 3 5 1 4 3...
Page 33: ...33 1 1 2 1 3 1 4 1 5 1 6 1 8 1 7 1 106 1620 ELECTROHYDRAULIC VALVE Clutch engagement control...
Page 35: ...35 106 3281 Hydraulic Tank Assembly 1 1 2 1 3 1 4 1 5 1 6 1 7 1...
Page 37: ...37 HYDRAULIC SCHEMATIC with 76hp John Deere engine...
Page 38: ...38...
Page 41: ...41 Key...
Page 43: ...43 see page 39 Electrical Schematic with 76hp John Deere engine Continued on page 39...
Page 44: ...44 Electrical Schematic with 76hp John Deere engine see page 38...