Piper Cherokee LANCE, Service Manual

Page: 233 / 854

TABLE VA-III
PIPE THREAD SPECIFICATIONS - AERONAUTICAL NATIONAL
TAPER PIPE THREADS (ANPT) REF. MIL-P-7105
PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
07/15/06 VA - HYDRAULIC SYSTEM
1K5
5A-27. HYDRAULIC LINES.
5A-27a. SEALING HYDRAULIC LINES AND FITTINGS.
(PIR-PPS20007, REV. Z.)
Use Loctite No. 567 PST Sealant for lubricating and/or sealing all pipe threads in the hydraulic system.
Care shall be taken to ensure that material does not enter the lines or fittings involved. Apply Loctite No.
567 PST Sealant to the male pipe threads only. Do not apply material to the first two threads of the
fitting or allow sealant to enter lines. Tighten fittings as follows.
Tightening Pipe Thread Fittings
Fittings should be turned in by hand the number of turns indicated by Table VA-III. If the fitting
does not seat at the number of turns specified for hand tight engagement ± one turn, both fitting and
boss should be gauged per MIL-P-7105. The fitting is to be wrench tightened not to exceed the
number of turns shown in column "Minimum Perfect Threads Remaining Before Wrenching", Table
VA-III. The total number of turns (by hand and wrench) is never to exceed the number specified in
the column labeled "Perfect External Threads".
NOMINAL THREADS HAND TIGHT PERFECT EXTERNAL MINIMUM PERFECT
PIPE PER ENGAGEMENT THREADS THREADS REMAINING
BEFORE WRENCHING
SIZE INCH LENGTH NUMBER LENGTH NUMBER LENGTH NUMBER
1/16 27 0.160 IN. 4.32 THD. 0.26111 7.05 0.10111 2.73
1/8 27 0.180 4.86 0.26385 7.12 0.08385 2.26
1/4 18 0.200 3.60 0.40178 7.24 0.20178 3.64
3/8 18 0.240 4.32 0.40778 7.35 0.16778 3.03
1/2 14 0.320 4.48 0.53371 7.46 0.21371 2.98
3/4 14 0.339 4.75 0.54571 7.64 0.20671 2.89
1 11 1/2 0.400 4.60 0.68278 7.85 0.28278 3.25
1/4 11 1/2 0.420 4.83 0.70678 8.13 0.28678 3.30
1/2 11 1/2 0.420 4.83 0.72348 8.13 0.30348 3.48