Stanley Black & Decker MHP3 Quick Disconnect Couplers, Operating The Tool Circuit, Operation

OPERATION

RECOMMENDED HYDRAULIC OILS Below is a list of recommended oils by brand.

Brand	Biodegradable	Description
CITGO	No	Hydurance AW32
AMS Oil	No	HVH 32
Exxon Mobil	No	Univis HVI26*
Exxon Mobil	No	DTE 10 Excel
Shell	No	S2 V 32
Chevron	No	Rando HDZ 32
Conoco Phillips	No	Unax AW-WR-32
Clarion (CITGO)	Yes	Green Bio 32
Exxon Mobil	Yes	EAL 224H
Chevron	Yes	Clarity AW32
Terresolve	Yes	Envirologic 132
Shell	Yes	Naturelle HF-E-32

*Recommended for extreme cold temperatures

QUICK DISCONNECT COUPLERS

HTMA-approved quick-disconnect couplings are in- stalled to hydraulic hoses so that the direction of oil flow is always from the male to the female quick disconnect as shown on page 10. Quick disconnect couplings and hose fittings are selected so that additional fittings such as reducer or adapter fittings are not required.

If adapter fittings are used, they must be approved steel hydraulic fittings meeting a minimum operating pressure rating of 2500 psi/172 bar. Do not use galvanized pipe fittings or black pipe fittings.

Use thread tape or pipe joint compound when installing quick disconnect couplings to hose or tool fittings. Fol- low the instructions furnished with the selected thread sealant. DO NOT OVERTIGHTEN THE FITTINGS.

OPERATING THE TOOL CIRCUIT

Facing the panel, the male quick disconnect fittings are the PRESSURE FLUID OUT fitting. The female quick disconnect fittings are the RETURN FLUID IN (RE- TURN) fitting.

PRESSURE (OUT) RETURN (IN)

The “Dual Circuit” control panel contains connections for two 5 GPM tool circuits. In addition, the two circuits may be combined into one 10 GPM tool circuit.

1.If using one 5 GPM tool circuit, select either the up- per or lower circuit and connect the PRESSURE

FLUID OUT hose to the male coupler and connect the RETURN FLUID IN (RETURN) to the female coupler next to it. Connect the other ends of the hoses to the tool.

If using both 5 GPM tool circuits, connect PRES- SURE FLUID OUT hoses to the male couplers and connect the RETURN FLUID IN (RETURN) hoses to the female couplers. Connect the other ends of the hoses to the tools.

NOTE:

Before starting the engine make sure the tool circuit switches are in the OFF position.

The power unit will not start if the tool selector switches are not in the OFF position.

2.Ensure the throttle control is pulled fully back to the idle position.

3.Ensure the tool circuit switches are in the OFF posi- tion.

4.Pull the choke out until it stops.

MHP3 User Manual ◄ 13