New Holland MegaCutter 512, Service Manual

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INTRODUCTION
Basic instructions - Shop and assembly
Shimming
For each adjustment operation, select adjusting shims and measure individually using a micrometer, then add up
the recorded values. Do not rely on measuring the entire shimming set, which may be incorrect, or the rated value
indicated on each shim.
Rotating shaft seals
For correct rotating shaft seal installation, proceed as follows:
• Before assembly, allow the seal to soak in the oil it will be sealing for at least thirty minutes.
• Thoroughly clean the shaft and check that the working surface on the shaft is not damaged.
• Position the sealing lip facing the fluid; with hydrodynamic lips, take into consideration the shaft rotation direction
and position the grooves so that they will deviate the fluid towards the inner side of the seal.
• Coat the sealing lip with a thin layer of lubricant (use oil rather than grease) and fill the gap between the sealing lip
and the dust lip on double lip seals with grease unless instructed otherwise.
• Insert the seal in its seat and press down using a flat punch or seal installation tool. Do not tap the seal with a
hammer or mallet.
• While inserting the seal, check that it is perpendicular to the seat; once settled, make sure that it makes contact
with the thrust element, if required.
• To prevent damaging the seal lip on the shaft, position a protective guard during installation operations.
O-ring seals
Lubricate the O-ring seals before inserting them in the seats, this will prevent them from overturning and twisting,
which would jeopardize sealing efficiency.
Sealing compounds
Apply one of the following sealing compounds on the mating surfaces when specified: SILMATE® RTV1473, or
L
OCTITE
® RTV 598 or L
OCTITE
® I
NSTANT
G
ASKET
587 B
LUE
. Before applying the sealing compound, prepare the
surfaces as directed on product container or as follows:
• Remove any incrustations using a metal brush.
• Thoroughly de-grease the surfaces using a locally approved cleaning agent such as safety solvent or brake parts
cleaner.
Spare parts
Only use "CNH Original Parts" or " NEW HOLLAND AGRICULTURE Parts".
Only genuine spare parts guarantee the same quality, duration and safety as original parts, as they are the
same parts that are assembled during standard production. Only "CNH Original Parts" or " NEW HOLLAND
AGRICULTURE Parts" can offer this guarantee.
When ordering spare parts, always provide the following information:
• Machine model (commercial name) and serial number
• Part number of the ordered part, which can be found in the "Service Parts Catalogue", used for order processing
47390184 16/04/2013
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