Stanley Labounty MDP Series - Second Member and Hydraulic Installation; Second Member Attachment Steps; Hydraulic Circuit Requirements and Connections

8 | MDP Operation & Maintenance Manual
SECOND MEMBER INSTALLATION
1. Pin the excavator boom and attachment boom pivot together using the same pin that was used for pinning on the
stick.
2. Clear all personnel and instruct the operator to slowly lift the attachment so there will be enough clearance to pin
the excavator cylinder to the cylinder connection on the mounting bracket.
3. Extend the cylinder rod and connect the cylinder connection. Install the pin provided with the mounting bracket.
Note: It may be necessary to use a lifting device (overhead hoist, forklift,etc.) to position the cylinder.
4. Remove the Transport Pin
HYDRAULIC INSTALLATION
Read the hydraulic letter provided by LaBounty before the arrival of the attachment. This letter states the hydraulic
requirements for the specic attachment.
DO NOT connect hydraulic lines while they are pressurized.

serious injury.
Hydraulic Circuit Requirements
Model Cylinder Circuit Rotation Circuit Connection
MDP 20R
40-80 GPM (150-300 LPM)
4500-5500 PSI (300-380 Bar)
3-5 GPM (11-20 LPM)
2000-2500 PSI (138-172 Bar)
Cylinder - 1” Code 62 2-Port
Rotation - .5” Flat Face O-Ring
MDP 27R
50-80 GPM (190-300 LPM)
4500-5500 PSI (300-380 Bar)
3-5 GPM (11-20 LPM)
2000-2500 PSI (138-172 Bar)
Cylinder - 1” Code 62 2-Port
Rotation - .5” Flat Face O-Ring
MDP 35R
50-80 GPM (190-300 LPM)
4500-5500 PSI (300-380 Bar)
3-5 GPM (11-20 LPM)
2000-2500 PSI (138-172 Bar)
Cylinder - 1.25” Code 62 2-Port
Rotation - .5” Flat Face O-Ring
MDP 50R
70-110 GPM (265-415 LPM)
4500-5500 PSI (300-380 Bar)
4-6 GPM (15-23 LPM)
2000-2500 PSI (138-172 Bar)
Cylinder - 1.25” Code 62 2-Port
Rotation - .5” Flat Face O-Ring
MDP 90
120-180 GPM (455-680 LPM)
4500-5500 PSI (310-380 Bar)
8-10 GPM (30-38 LPM)
2000-2500 PSI (138-172 Bar)
Cylinder - 1.50” Code 62 4-Port
Rotation - .5” Flat Face O-Ring
1. Connect the hydraulic hoses to the connections located on each side of the upper head.
Note: Each port is labeled, on the MDP itself, so users can easily identify the cylinder ports, rotation ports and
case drains.
2. After installing the hydraulic circuit on the base machine, install additional hydraulic lines up the boom, if required.
• Two 1/2 in (13 mm) diameter feed line
• One 1/2 inch (13 mm) diameter case drain line
Note: These lines will terminate at the end of the boom.
3. Install jump lines from these hydraulic lines to the attachment bulkhead or manifold ttings.
4. Torque all ange bolts and nuts using the table below.
Flange Flange Code Bolt Size Torque
1.00”
62 M12 x 1.75 70 Ft. Lbs. (95 Nm)
1.25”
62 M12 x 1.75 70 Ft. Lbs. (95 Nm)
1.25”
62 M14 x 2.00 112 Ft. Lbs. (152 Nm)
1.50”
62 M14 x 2.00 224 Ft. Lbs. (304 Nm)
5. Check for any hydraulic oil leaks or interference.
Note: Hydraulics will need to be bled before putting into service (see “Bleed the Hydraulic Cylinder” on page
13).