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Basic instructions
Important notice
All maintenance and repair work described in this manual must be performed exclusively by NEW HOLLAND service
technicians, in strict accordance with the instructions given and using any specific tools necessary.
Anyone performing the operations described herein without strictly following the instructions is personally responsible
for any eventual injury or damage to property.
Battery
Before carrying out any kind of service operation disconnect and isolate the battery negative lead, unless otherwise
requested for specific operations (e.g.: operations requiring the engine to be running), after which it is necessary to
disconnect the above mentioned lead to complete the work.
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 for 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.
• Smear 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.
• Insert the seal in its seat and press down using a flat punch, do not tap the seal with a hammer or mallet.
• Whilst inserting the seal, check that the 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 jeopardise sealing efficiency.
Sealing compounds
Apply one of the following sealing compounds on the mating surfaces marked with an X: L
5205 or SUPERBOND 559 or BETALOK A272M.
Before applying the sealing compound, prepare the surfaces as follows:
• Remove any incrustations using a wire brush.
• Thoroughly decrease the surfaces using one of the following cleaning agent: trichlorethylene, petrol or water and
soda solution.
Bearings
When installing bearings it is advised to:
• Heat the bearings to 80 – 90 °C (176 – 194 °F) before fitting on the shafts.
• Allow the bearings to cool before installing them from the outside.
INTRODUCTION
51553302 19/11/2018
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® 518™ or L
OCTITE
OCTITE
®
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