Case IH Farmall 105U Efficient Power, Service Manual

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INTRODUCTION
Basic instructions
SHIMMING
For each adjustment operation, select adjusting shims and measure individually using a micrometer, then add up
the measured values: Do not rely on measuring the entire shimming set, which may be incorrect, or the rated value
indicated for each on shim.
ROTATING SHAFT SEALS
For correct rotating shaft seal installation, proceed as follows:
• 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;
• insert the seal in its seat and press down using a seal installer; do not tap the seal with a hammer or mallet;
• whilst inserting the seal, check that it is perpendicular to the seat; once settled.
• 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, on this manual, with an X: RTV 1473 ,
R
HODORSIL
® CAF 1 or LOCTITE PLASTIC GASKET .
Before applying the sealing compound, prepare the surfaces as follows:
• remove any incrustations using a wire brush;
•
WARNING
Chemical hazard!
Always wear protective clothing and goggles when cleaning with solvents, acids, or alkaline chem-
ical agents. Always follow the chemical manufacturer's instructions.
Failure to comply could result in death or serious injury.
W0180A
thoroughly de-grease the surfaces using one of the following cleaning agents: trichlorethylene, Diesel fuel or a
water and sodium hydroxide (
NaOH , also known as caustic soda) solution.
BEARINGS
When installing bearings it is advised to:
• heat the bearings to 80 ÷ 90 °C before fitting on the shafts;
• allow the bearings to cool before installing them.
SPRING PINS
When fitting split socket elastic pins, ensure that the pin notch is positioned in the direction of the force required to
stress the pin.
Spiral spring pins do not require special positioning.
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