Hyd-Mech H-22A, Operation And Maintenance Manual

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Pg 3.5
H22
HYDRAULIC MAINTENANCE
There are only FIVE items of routine maintenance associated with the hydraulic system.
1. OIL FILTER - Ten micron filtration of the hydraulic oil is provided by a spin on type filter mounted on the
tank return line. The element should be changed after the first 50 Hours of operation and then every 500 working
hours. Suitable replacement elements are:
CANFLO RSE-30-10
GRESEN K-22001
PARKER 921999
ZINGA AE-10
2. OIL LEVEL - Oil level should be maintained in the upper half of the level gauge. Normally the rate of oil
consumption will be very low and it should be unnecessary to add oil more often than at filter changes. Add oil
only to the top line on level gauge.
The machine is shipped from the factory with ARCO Duro AW46 hydraulic oil. Generally any brand of
recognized mineral hydraulic oil with the same properties should be compatible with Duro AW46, but to avoid
any risk we suggest staying with Duro AW46. If it is desired to change brands, it is necessary to drain the tank
and 1/3 refill it with the new oil, operate through several full strokes of each cylinder, drain the tank again, and
finally fill the tank with the new brand.
Hydraulic tank capacity is approximately 11 US gallons (42 L).
Recommended replacement oils:
Chevron, AW Hydraulic Oil 46
Esso, NUTO H46
Mobil, Mobil DTE 25
Texaco, Rando HD 46
Shell, Tellus 46
3. OIL TEMPERATURE - Oil temperature is indicated by a thermometer contained in the level gauge. Oil
temperature during steady operation should stabilize at about 50 - 55 F° (10-12°C) above room temperature.
Thus in a 70 F° (20°C) shop one might expect an oil temperature of about 120 F° (50°C) Oil temperature should
never exceed 160 F° (70°C)
4. OIL PRESSURE - Oil pressure is factory set to 950 PSI (6548 kPa ) for H-18 and should not require
further attention except precautionary observation at start-up and every few days thereafter.
5. BLADE TENSION - Is preset at the factory and should under normal conditions not require attention. For
adjustments, see the hydraulic schematic.
CLEANLINESS
The heavy duty design should endure heavy operating conditions and provide the customer with flawless
machine performance. To extend good performance some care is required especially as cleanliness is concerned.
The following areas should be kept clean:
- Control console free of dirt and grease.
- Door charts free of dirt and grease.
- Wheel boxes free of chips.
- Blade guides free of chips.
- Outfeed table free of chips.
- A large chip build-up should be avoided in the base of the saw.
NOTE: All parts must be cleaned before any repair service can be performed on them.