PowerTilt Tilting Coupler
PowerTilt Series Service & Repair Manual
HY34-1410
10
Parker Hannifin Corporation
Helac/Cylinder Division
Enumclaw, Washington USA
www.parker.com/helac
Installation and Maintenance
Hydraulic Requirements and Plumbing
Hydraulic Requirements
Typical PowerTilt Circuit
The Typical PowerTilt Circuit Chart (shown on this
page) and the Tool Circuit Requirements Table (shown
on the following page) illustrate the control circuit
requirements for the PowerTilt. The hydraulic pressures
and flow requirements must be observed or damage to
the actuator can occur.
The installer of the PowerTilt is responsible for selecting
the control circuits that are compatible with the
excavator and meet the tool circuit requirements. Helac
can be contacted for additional control circuits and
methods for controlling the PowerTilt.
NOTICE
Most PowerTilts manufactured after
1997 incorporate an integral cross
port relief valve mounted inside the
shaft. If this secondary relief does not
exist, then the circuit pressure must
be lowered to match the cross port
relief valve pressure.
Each PowerTilt model is manufactured with two
ports, P1 and P2. This is done to assist in the hose
routing. Refer to the Suggested Hose Routings
Diagram on Page 12 for the recommended routings.
NOTICE
The majority of PowerTilts delivered
to customers in North America
incorporate SAE type ports.
Customers outside of North America
typically have BSPP type ports.
Tool Circuit Requirements for PT, PTA, PTB Series
Model Sizes
6
7
8
9
10
11
12
Displacement
in
3
(cm
3
)
32
(525)
62
(1060)
89
(1460)
118
(1935)
159
(2600)
215
(3515)
277
(4540)
Suggested Oil Flow***
gpm
(l/min)
1.3-4
(
5-16)
3-9
(11-32)
4-12
(15-44)
5-15
(19-58)
7-21
(26-78)
9-27
(35-105)
12-36
(45-136)
Port Connections*
SAE
BSPP
4
(1/4)
4
(1/4)
6
(1/4)
6
(1/4)
6
(1/4)
6
(1/4)
6
(3/8)
Hydraulic Hose and Tube Sizing
Hose, Tube (Optional)
Min. Whip Hose
in
(mm)
in
(mm)
3/8
(10)
1/4
(6)
3/8
(10)
1/4
(6)
3/8
(10)
1/4
(6)
1/2
(12)
3/8
(10)
1/2
(12)
3/8
(10)
5/8
(16)
3/8
(10)
5/8
(16)
3/8
(10)
Hydraulic Pressures
Cross Port Relief Valve Pressure**
Circuit Pressure
Maximum Circuit Back Pressure
3,050-3,450 psi
(220-230 bar)
2,900-3,000 psi
(200-207 bar)
580 psi
(40 bar)
* Most PowerTilt models are manufactured with four ports: two ports (P1) and two ports (P2). The majority of all PowerTilts delivered to North
American customers incorporate SAE port connections. PowerTilts delivered to customers outside of North America incorporate BSPP port
connections.
** PowerTilts are equipped with factory-installed integral cross port relief valves.
*** Suggested oil flows will yield a speed of 6 seconds at the low end and 2 seconds at the high end, stop to stop.
