Hyd-Mech S-20, User Manual

Page: 48 / 60

7.2
HYDRAULIC POWER PACK (S20H / S23H):
System operates head up and vise.
Power pack is mounted on the door at the drive side of the
infeed table. Parts consist of .25Hp (.19 kW) electric motor,
relief valve assembly, gear pump and tank assembly
This option requires special heads and vise cylinder.
+<'5$8/,&2,/0DFKLQHK\GUDXOLFUHVUYRLULV¿OOHGZLWKPLQHUDORLO7H[D',QFDVHRI
FKDQJLQJWKHEUDQGK\GUDXOLFV\VWHPVKRXOGEHGUDLQHGDQGWKRURXJKO\ÀXVKHG)ROORZLQJLVDOLVWRIUHFRP
-
mended replacement oils:
Texaco Rando HD46
CHEVRON ECO Hydraulic oil AW ISO 46
MOBIL DTE 25
ESSO NUTO H46
SHELL TELUS OIL 46
2. HYDRAULIC OIL LEVEL - Semitransparent plastic reservoir allows for easy oil level visual inspection. Oil
level should be maintained so the reservoir is always 75-90% full. The useable volume of oil reservoir is 1 US
Gallons (3.8 L).
3. HYDRAULIC OIL CHANGE - It is recommended to change oil after every 1500 hours of operation or once a
year.
4. OIL TEMPERATURE - Oil temperature during steady operation should stabilize at about 55-60F (30-33 C)
above room teperature. Thus in a 70F (21 C) shop one might expect an oil temperature of about 130F (54 C).
Oil temperature should never exceed 176F (80 C).
5. HYDRAULIC PRESSURE - Hydraulic pressure is factory set at 450-500PSI (3100-3450 kPa) and should
not require any further atteneion.
VARIABLE VISE PRESSURE OPTION (S20H / S23H):
Vise clamping adjustment is located on the face of the hy-
draulic power pack door. Clamping pressure is indicated
by the pressure gauge adjacent to the pressure control
knob. Turning the knob clockwise increases clamping
SUHVVXUH7KHFODPSLQJSUHVVXUHFDQEHFKDQJHGLQ¿
-
nitely from 50PSI to 600PSI, full pump pressure. It has to
be taken under consideration that clamp pressure set-
ting will affect the clamp speed. The actual usable low
clamp pressure setting may be higher than achievable by
controls and is limited by mechanical friction of the vise
assemblies.
Vise clamping pressure components can be accessed
easily for service by opening the power pack door.