0-15 PRECOAT BOLTS (Bolts with seal lock agent coating on threads) 1. Do not use the precoat bolt as it is in either of the following cases: (a) After it is removed. (b) When the precoat bolt is moved (loosened or tightened) by tightness check, etc. Seal lock agent Note: For torque check, use the lower limit of the allowable tightening torque range. If the bolt moves, retighten it according to the steps below. 2. Method for reuse of precoat bolts (1) Wash the bolt and threaded hole. (The threaded hole must be washed even for replacement of the bolt.) (2) Perfectly dry the washed parts by air blowing. (3) Coat the specified seal lock agent to the threaded portion of the bolt.
HIGH PRESSURE HOSE FITTING TIGHTENING TORQUE 1. When connecting a high pressure hose, wipe the hose fitting and mating nipple contact surfaces with clean cloth to remove foreign matters and dirt. Also check no dent or other damage on the contact surfaces before installation. 2. When connecting a high pressure hose, hold the hose to align the fitting with the nipple and tighten the fitting. 3. The maximum tightening torque must not exceed twice the standard tightening torque.
Nominal diameter of screw Standard tightening torque N⋅m (kgf-cm) [ft-lbf] Hose inside diameter mm (in) Standard Tightening range 7/16 ⎯ 20UNF 25 (250) [18.1] 24 ~ 26 (240 ~ 270) [17.4 ~ 19.5] 6 (0.24) 9/16 ⎯ 18UNF 49 (500) [36.2] 47 ~ 52 (480 ~ 530) [34.7 ~ 38.3] 9 (0.35) 3/4 ⎯ 16UNF 59 (600) [43.4] 56 ~ 62 (570 ~ 630) [41.2 ~ 45.6] 12 (0.47) 7/8 ⎯ 14UNF 59 (600) [43.4] 56 ~ 62 (570 ~ 630) [41.2 ~ 45.6] 12 (0.47), 15 (0.59) 1⋅1/16 ⎯ 12UNF 118 (1200) [86.8] 112 ~ 123 (1140 ~ 1250) [82.5 ~ 90.4] 19 (0.75) 1⋅5/16 ⎯ 12UNF 137 (1400) [101.3] 130 ~ 144 (1330 ~ 1470) [96.2 ~ 106.4] 25 (0.98) PF1/4 25 (250) [18.1] 24 ~ 26 (240 ~ 270) [17.4 ~ 19.5] 6 (0.24) PF3/8 49 (500) [36.2] 47 ~ 52 (480 ~ 530) [34.7 ~ 38.3] 9 (0.35) PF1/2 59 (600) [43.4] 56 ~ 62 (570 ~ 630) [41.2 ~ 45.6] 12 (0.47) PF3/4 118 (1200) [86.8] 112 ~ 123 (1140 ~ 1250) [82.5 ~ 90.4] 19 (0.75) PF1 137 (1400) [101.3] 130 ~ 144 (1330 ~ 1470) [96.2 ~ 106.4] 25 (0.98)