Operation No. 16 - Inspection Of Tightness Of Front Chain Gearing (I Stage) - PRONAR T740 Manual

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Immobilise tractor and trailer with parking brake.
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Set cut-off valve (2) in (Z) position – closed.
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Start tractor, using hydraulic manifold supplying hydraulic clutch system.
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Using reduction valve (1), placed on connection plate (3) regulate pressure in
clutch system. Nominal working clutch pressure must be set in within the range
of 90 – 95 bar. Check pressure on pressure gauge (4), placed on gearing
housing.
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Cut off oil flow to trailer hydraulic clutch system, turn off tractor.
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Open cut off valve (2).
TIP
When clutch is disengaged pressure remaining in system may not be greater than1.5
bar.
Clutch working pressure regulation diagram is shown on information sticker (5).
Regulation of working pressure of clutch:
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5.2.16 OPERATION NO. 16 – INSPECTION OF TIGHTNESS OF FRONT CHAIN
GEARING (I STAGE)
Required service actions
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Immobilise tractor and trailer with parking brake.
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Put two wedges behind the wheel, to stop machine rolling.
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Open front transmission cover.
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Check chain looseness. Press with thumb in mid-length (place marked with
arrow), chain loose play should amount to 7 - 15 mm.
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If there is greater looseness then loosen counter nut (4), and nut (5) tighten
chain (1).
every 12 months of use.
after each change of tractor.
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