BVA Hydraulics PEW0501, PEW1002, PEW1503, PEW3005 - Manual (Page 5)

5
MAINTENANCE
1. Keep areas around pump unobstructed in order to
provide good air flow around the motor and pump. Keep
the motor and pump as clean as possible.
2. Inspect hoses and connections daily. Replace
damaged components immediately with BVA
Hydraulics replacement parts only.
3. Tighten connections as needed. Use non-hardening
pipe thread compound when servicing connections.
4. Check hydraulic oil level every 40 hours of operation.
Add hydraulic oil if necessary.
5. Completely change the hydraulic oil every 300 hours of
operation. Change the oil more frequently when pump
is used in an extremely dusty environment or when
the oil has been overheated. Use only good quality
hydraulic oil. We recommend BVA hydraulic oil (F01
& F05), Mobil DTE 16M or equivalent. To order the oil,
refer to service parts section.
Note: Use only a good quality hydraulic oil. Never use
brake fluid, transmission fluid, turbine oil, motor oil, alco-
hol, glycerin etc. Use of other than recommended hydraulic
oil, will void warranty and damage the pump, hose, and
application.
Adding Hydraulic Oil
1. Make sure electric motor is OFF.
2. Depressurize and disconnect hydraulic hose from
application.
3. Remove vent cap on the top plate of the reservoir.
4. Use a funnel to fill reservoir to about 2" from top of
reservoir plate.
5. Wipe up any spilled fluid and reinstall the vent cap.
Changing Hydraulic Oil
1. For best results, change hydraulic oil once a year.
2. Remove drain plug, tilt the pump then pour used fluid
into a sealable container.
3. Dispose the hydraulic oil in accordance with local
regulations.
4. Fill hydraulic oil, then reinstall vent cap.
Cleaning
Clean oil filter screen periodically with nonflammable
solvent, then blow dry before reassemble back to pump.
Storage
1. When not in use, depressurize and disconnect
hydraulic hoses from application.
2. Wipe clean, thoroughly.
3. Store in clean, dry environment. Avoid temperature
extremes.
4. For transportation or long term storage, shield pump
with a protective cover.
Figure 3. Schematic Flow Path and Valve Position
Port A Port B
Position 1: Pressured
oil flows to port A, port
B returns flow to tank. Position 3: Pressured
oil flows to port B, port
A returns flow to tank. Position 2: Neutral,
ports A and B are
closed. Hold Position.
Port A Port B Port A Port B Port A Port B
P T P T P T
(a) 4-way, 3-position valve for Double Acting Cylinder
Position 1 (Advance):
Pressured oil flows to
port A. Position 3 (Retract):
Port A returns flow to
tank. Position 2 (Hold):
Neutral, ports A is
closed. Hold Position.
Port A Port A Port A
P T P T P T
(b) 3-way, 3-position valve for Single Acting Cylinder
1
2
3