Assembly Instructions For O-Ring Boss (Orb) Fittings - JLG 400S Service And Maintenance Manual

SECTION 5 - BASIC HYDRAULICS INFORMATION & SCHEMATICS
Assembly Instructions for O-ring Boss (ORB)
Fittings
1. Inspect components to ensure that male and female
port threads are free of rust, splits, dirt, foreign matter, or
burrs.
2. Ensure proper o-ring is installed. If o-ring is missing
install per O-ring Installation (Replacement).
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 and Plugs, thread the fitting by
hand until contact.
5. For Adjustable fittings, refer to Adjustable Stud End
Assembly for proper assembly.
5-20
6. Torque the fitting or nut to value listed in Table 5-12
through Table 5-17 while using the Double Wrench
Method.
a. The table headings identify the straight thread
o-ring port and the type on the other side of the fit-
ting. The torque will be applied to the straight
thread o-ring port.
b. Torque values provided in Table 5-12 through Table
5-17 are segregated based on the material configu-
ration of the connection. 'ALUMINUM/BRASS FIT-
T I N G S O R A LU M I N U M / B R A S S
COMPONENTS' indicate either the following mate-
rial configurations:
• STEEL fittings with ALUMINUM or BRASS mating compo-
nents
• ALUMINUM or BRASS fittings with STEEL mating compo-
nents
• 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 counterbore of the port.
M AT I N G
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