Oshkosh JLG 1500SJ, Service And Maintenance Manual

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SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS
3121262 – JLG Lift – 5-7
Assembly Instructions for British Standard Pipe
Thread Tapered (BSPT) Connections
1. Inspect components to ensure male and female port
threads are free of rust, splits, dirt, foreign matter, or
burrs.
2. Apply a suitable thread sealant, such as Loctite 567, to
the male pipe threads if not already applied. Ensure the
first 1 to 2 threads are uncovered to prevent system con-
tamination.
3. Assemble connection hand tight.
4. Mark fittings, male and female.
OVER TIGHTENING MAY CAUSE DEFORMATION OF THE
PIPE FITTING AND DAMAGE TO THE JOINING FITTING,
FLANGE OR COMPONENT MAY OCCUR.
NEVER BACK OFF (LOOSEN) PIPE THREADED CONNECTORS
TO ACHIEVE ALIGNMENT. MEET THE MINIMUM REQUIRED
TURNS AND USE THE LAST TURN FOR ALIGNMENT.
5. Rotate male fitting the number of turns per Table 5-2,
BSPT Pipe Thread. See FFWR and TFFT Methods for TFFT
procedure requirements.
NOTE: TFFT values provided in Table 5-2, BSPT Pipe Thread are
applicable for the following material configurations:
• STEEL fittings with STEEL mating components
• 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.
Table 5-2. BSPT Pipe Thread
TYPE/FITTING IDENTIFICATION
Turns From
Finger Tight
(TFFT)**
MATERIAL Dash Size
Thread Size ØA*
(BSPT) (in) (mm)
STEEL, AL
UMINU
M
, OR
BRASS
FIT
TINGS WITH
STEEL, AL
UMINUM, OR BRASS
M
ATING C
OMPO
NENT
S
2 1/8 - 28 0.38 9.73 2 to 3
4 1/4 - 19 0.52 13.16 2 to 3
6 3/8 - 19 0.66 16.66 2 to 3
8 1/2 - 14 0.83 20.96 2 to 3
12 3/4 - 14 1.04 26.44 2 to 3
16 1 - 11 1.31 33.25 1.5 to 2.5
20 1 1/4 - 11 1.65 41.91 1.5 to 2.5
24 1 1/2 - 11 1.88 47.80 1.5 to 2.5
32 2 - 11 2.35 59.61 1.5 to 2.5
* ØA thread dimension for reference only.
** See Appendix B for TFFT procedure requirements.