Dometic SeaStar - Technical Information and Specifications; Bolt Torque Specifications; Helm Pump Specifications

17
16
These are the recommended maximum torque values for reusable dry
bolts. Bolts should be torqued to this value +0% -20%. For lubricated
bolts, multiply the dry bolt torque values by .75.
Bolt Torque Specications
Helm Pump Shaft
TAPER THREAD KEY SIZE
3/4" Standard, 1" per ft. 5/8" NF 3/16"
** Spline 1/2" NF N/A
VALVE TILT TYPE DISPLACEMENT RELIEF VALVE PORTS*
HH4315-4 Regular Sport 1.4 cu. in. (22.9 cc) 1000 PSI (6.9 MPa) -5 ORB
HH4316-4 Regular Sport Plus 1.4 cu. in. (22.9 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6145-4 Regular Sport 2.0 cu. in. (33.0 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6190-4 Pro Sport 2.0 cu. in. (33.0 cc) 1500 PSI (10.3 MPa) -5 ORB
HH6191-4 Regular Sport 1.7 cu. in. (27.8 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6192-4 Regular Sport 2.4 cu. in. (39.3 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6193-4 Regular Sport 1.4 cu. in. (22.9 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6345-4 Regular Sport Plus** 2.0 cu. in. (33.0 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6445-4 Regular Sport Plus 2.0 cu. in. (33.0 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6489-4 Pro Sport Plus 1.7 cu. in. (27.8 cc) 1500 PSI (10.3 MPa) -5 ORB
HH6490-4 Pro Sport Plus 2.0 cu. in. (33.0 cc) 1500 PSI (10.3 MPa) -5 ORB
HH6491-4 Regular Sport Plus 1.7 cu. in. (27.8 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6492-4 Regular Sport Plus 2.4 cu. in. (39.3 cc) 1000 PSI (6.9 MPa) -5 ORB
HH6493-4 Regular Sport Plus 1.4 cu. in. (22.9 cc) 1000 PSI (6.9 MPa) -5 ORB
* Helm ll/vent port is a 1/4" NPT port.
** Splined Wheel Shaft
Helm Pump
Values are stated in: in-lbs (N-m)
Bolt Size 18-8SS Brass
2-56 2.5 (.282) 2.0 (.226)
2-64 3.0 (.338) 2.5 (.282)
3-48 3.9 (.440) 3.2 (.361)
3-56 4.4 (.497) 3.6 (.407)
4-40 5.2 (.587) 4.3 (.486)
4-48 6.6 (.740) 5.4 (.610)
5-40 7.7 (.869) 6.3 (.712)
5-44 9.4 (1.06) 7.7 (.869)
Bolt Size 18-8SS Brass
6-32 9.6 (1.08) 4.9 (.554)
6-40 12.0 (1.35) 9.9 (1.12)
8-32 20.0 (2.25) 16.0 (1.81)
8-36 22.0 (2.48) 18.0 (2.03)
10-24 23.0 (2.59) 19.0 (2.14)
10-32 32.0 (3.61) 26.0 (2.94)
1/4”-20 75.0 (8.47) 62.0 (7.01)
1/4”-28 94.0 (10.6) 77.0 (8.70)
Bolt Size 18-8SS Brass
5/16”-18 132.0 (14.91) 107.0 (12.10)
5/16”-24 142.0 (16.04) 116.0 (13.11)
3/8”-16 236.0 (26.66) 192.0 (21.71)
3/8”-24 259.0 (29.20) 212.0 (23.97)
Values are stated in: ft-lbs (N-m)
Bolt Size 18-8SS Brass
7/16”-14 31.0 (42.00) 26.0 (35.25)
7/16”-20 33.0 (44.74) 27.0 (36.61)
1/2”-13 43.0 (58.30) 35.0 (47.45)
1/2”-20 45.0 (61.01) 37.0 (50.17)
9/16”-12 57.0 (77.28) 47.0 (63.72)
9/16”-18 63.0 (85.42) 51.0 (69.15)
Bolt Size 18-8SS Brass
5/8”-11 93.0 (126.09) 76.0 (103.04)
5/8”-18 104.0 (141.00) 85.0 (115.24)
3/4”-10 128.0 (173.55) 104.0 (141.00)
3/4”-16 124.0 (168.12) 102.0 (138.29)
7/8”-9 194.0 (236.03) 159.0 (215.58)
7/8”-14 193.0 (261.67) 158.0 (214.22)
Bolt Size 18-8SS Brass
1”-8 287.0 (389.12) 235.0 (318.62)
1”-14 259.0 (351.16) 212.0 (287.43)
TECHNICAL INFORMATION
WARNING
Failure to adhere to the torque specifications below may lead to
separation of components resulting in loss of steering control causing
ejection from vessel, or collision with obstacles, leading to property
damage, personal injury and/or death.