Assembly Instructions For Metric Iso 6149 (Mpp) Port Assembly Stud Ends - JLG 1850SJ Service And Maintenance Manual

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SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS

Assembly Instructions for Metric ISO 6149 (MPP)

Port Assembly Stud Ends

1. Inspect components to ensure that male and female

threads and surfaces are free of rust, splits, dirt, foreign

matter, or burrs.

2. If O-ring is not preinstalled, install proper size, taking

care not to damage it. See O-ring Installation (Replace-

ment) for instructions.

CARE TO BE TAKEN WHEN LUBRICATING O-RING. AVOID ADDING OIL TO

THE THREADED CONNECTION OF THE FITTING. THE LUBRICATION WOULD

CAUSE INCREASED CLAMPING FORCE AND CAUSE FITTING DAMAGE.

3. Pre-lubricate the O-ring with Hydraulic Oil.

4. For Non-Adjustable Fittings and Plugs, thread the fitting

by hand until contact.

5. For Adjustable fittings, refer to Adjustable Stud End

Assembly for proper assembly.

6. Torque the fitting or nut to value listed in Table 5-24

while using the Double Wrench Method.

a. The table headings identify the Metric port and the

type on the other side of the fitting. The torque will

be applied to the Metric port.

b. Torque values provided in Table 5-24 are segregated

based on the material configuration of the connec-

tion. 'ALUMINUM/BRASS FITTINGS OR ALUMINUM/

BRASS MATING COMPONENTS' indicate either the

following material configurations:

• STEEL fittings with ALUMINUM or BRASS mating compo-

• ALUMINUM or BRASS fittings with STEEL mating compo-

• ALUMINUM or BRASS fittings with ALUMINUM or BRASS

mating components.

7. Inspect to ensure the O-ring is not pinched and the

washer is seated flat on the counter bore of the port.

Troubleshooting