F
OR
M
ODELS
: JGI, JGM, JGN, JGP
AND
JGQ
S
ECTION
1 - D
ESIGN
S
PECIFICATIONS
& D
ATA
PAGE 1-19
Tightening Torque Procedures
Listed below are some procedures which make fastener tightening more accurate and will
help to be sure that the proper torque is being applied.
1.
Be sure that the torque wrench is properly calibrated and used by qualified
personnel to achieve the required fastener tightening torque for all critical parts.
The exception is the crosshead-balance lock nut which may be tightened using
the Ariel tried and true slugging method.
2.
Always check to determine over what range the torque wrench is accurate, since
Peripheral Cap Screws
10 - 32
Hex Socket Head
25 lb x in.
(2.8)
12 - 28
43 lb x in.
(4.9)
1/4 - 20
110 lb x in.
(12.4)
5/16 - 18
176 lb x in.
(19.9)
3/8 - 16
21 (28)
F
IGURE
1-6 S
PIRALOCK
T
HREADED
V
ALVE
A
SSEMBLY
- M
ARKED
SPL
T
ABLE
1-13 H
OERBIGER
V
ALVE
A
SSEMBLY
F
ASTENERS
- T
IGHTENING
V
ALUES
FASTENER
NOMINAL
INCH - TPI
TYPE
TORQUE,
LB-FT (N·m)
Bottom Views
Suction Guard
Discharge Seat
