7-2
Selection Guide
CYLINDER PART NUMBER DISPLACEMENT BORE STROKE OUTPUT FORCE MAX. TORQUE
(35˚ from centre)
SINGLE
9" CYLINDER (HC5801-2)
21.25 in
3
(348cc) 2.0" (51mm) 9" (229mm) 2946 lbs
f
(13,090 N) 18,900 in–lbs (2130 Nm)
SINGLE
11" CYLINDER (HC5803-2)
26.00 in
3
(426cc) 2.0" (51mm) 11" (280mm) 2946 lbs
f
(13,090 N) 23,140 in–lbs (2610 Nm)
TWIN 9" CYLINDER (HC5802) 42.50 in
3
(697cc) 2.0" (51mm) 9" (229mm) 5892 lbs
f
(26,190 N) 37,800 in–lbs (4260 Nm)
TWIN 11" CYLINDER (HC5804) 52.00 in
3
(853cc) 2.0" (51mm) 11" (280mm) 5892 lbs
f
(26,190 N) 46,280 in–lbs (5220 Nm)
SINGLE 9" CYLINDER (HC5805) 37.11 in
3
(608cc) 2.5" (64mm) 9" (229mm) 5154 lbs
f
(22,926 N) 33,065 in–lbs (3736 Nm)
TWIN 9" CYLINDER (HC5806) 74.33 in
3
(1216cc) 2.5" (64mm) 9" (229mm) 10,308 lbs
f
(45,852 N) 66,130 in–lbs (7472 Nm)
CYLINDER PART NUMBER
DISPLACEMENT HULLS (standard) DISPLACEMENT HULLS (heavy duty)
PLANING HULLS
SINGLE
9" x 1 CYLINDER (HC5801-2)
UP TO ...................50' (15m) UP TO ....................40' (12m) UP TO ....................65' (20m)
TWIN 9" x 2 CYLINDER (HC5802) UP TO ...................75' (22m) UP TO ....................55' (17m) UP TO ....................85' (26m)
SINGLE
11" x 1 CYLINDER (HC5803-2)
UP TO ...................60' (18m) UP TO ....................50' (15m) UP TO ....................75' (23m)
TWIN 11" x 2 CYLINDER (HC5804) UP TO ...................85' (26m) UP TO ....................60' (18m) UP TO ..................100' (31m)
*SINGLE 9" x 2.5 CYLINDER (HC5805) UP TO .................100' (31m) UP TO ....................70' (22m) UP TO ..................110' (34m)
*TWIN 9" x 2.5 CYLINDER (HC5806) UP TO .................110' (34m) UP TO ....................80' (25m) UP TO ..................120' (37m
* Larger 2.5" cylinder bore than HC5801-2 and HC5802.
Power Steering Cylinders Part #
9" (228mm) stroke .................................HC5801-2
See table above for correct cylinder selection
11" (279mm) stroke ...............................HC5803-2
See table above for correct cylinder selection
9" (228mm) stroke ....................................HC5805
See table above for correct cylinder selection
Add-On Cylinders
9" (228mm) stroke ....................................HC5802
See table above for correct cylinder selection
11" (279mm) stroke ..................................HC5804
See table above for correct cylinder selection
9" (228mm) stroke ....................................HC5806
See table above for correct cylinder selection
Steering Helms (For 3-1/2 Turn System) Part #
SSI Helm, Standard Mount........................HH5271
SSI Helm, Rear Mount ..............................HH5261
SSI Helm, Tilt ............................................HH5741
SSI Helm, Rear Mount, 1" Shaft ................HH5281
Power Steering Pumps
Outlet Check Power Pump.........................HP5820
Press Relief Twin Pump.............................HP5822
R.H. Rotation, Belt Drive............................HP5830
L.H. Rotation, Belt Drive ............................HP5831
R.H. Rotation,
Keyed Shaft, Direct Drive
......HP5832
R.H. Rotation,
Keyed Shaft, Direct Drive
......HP5833
R.H. Rotation,
Direct Drive, Heavy Duty
......HP5835
R.H. Rotation, 9 Tooth
Splined Shaft, Direct Drive ........................HP5837
R.H. Rotation, 11 Tooth
Splined Shaft, Direct Drive ........................HP5838
R.H. Rotation, Direct Drive,
No Flow Control.........................................HP5836
R.H. Rotation, 9 Tooth
Splined Shaft, Direct Drive ........................HP5839
L.H. Rotation, 11 Tooth
Splined Shaft, Direct Drive ........................HP5840
L.H. Rotation, Direct Drive.........................HP5841
L.H. Rotation, 11 Tooth
Splined Shaft, Direct Drive ........................HP5842
L.H. Rotation, 9 Tooth
Splined Shaft, Direct Drive ........................HP5843
R.H. Rotation, 6 Tooth
B Flange, Direct Drive ................................HP5844
L.H. Direct Drive, 9 Tooth
Splined Shaft .............................................HP5845
R.H. Direct Drive, 9 Tooth
Splined Shaft .............................................HP5846
R.H. Direct Drive, 11 Tooth
Splined Shaft .............................................HP5847
R.H. Keyed Shaft .......................................HP5848
L.H. Direct Drive, 11 Tooth
Splined Shaft .............................................HP5849
L.H. Keyed Shaft........................................HP5850
L.H. direct drive, 13 Tooth
Splined Shaft .............................................HP5852
Oil Reservoir, Cooler & Filter Part #
Oil Reservoir..............................................HP5810
Oil Cooler, 2.25 Kw, 1" water lines.............HP5825
Oil Cooler, 6.25 Kw, 2" water lines.............HP5826
Oil Filter .....................................................HP5815
Miscellaneous
Outlet Check Valve (Power Pump).............HP5820
Auto Flow Control (Twin Pump) ................HP5821
Crossover Pressure Relief .........................HP5822
System Pressure Gauge Kit .......................HA5821
Adapter Kit, Twin Disk #5050 ....................HA5823
Adapter Kit, Twin Disk #5061 ....................HA5824
Adapter Kit, MAN to V10 Pump .................HA5827
SeaStar Oil, 1 liter......................................HA5430
SeaStar Oil, 4 liter......................................HA5440
Pressure Relief Valve, (1250psi setting)
.....*HP5818
*Required in a system where the Power pump does NOT
have a built in pressure relief valve. ALL SeaStar Power
Pumps have built in Pressure Relief Valves.
* All boats over 70' should have steering loads r eviewed by factory.
Basic System Selection Guide:
Technical Data:
Cylinder Selection Guide:
POWER STEERING
62303
Dia. 3/4"
A
C
B
A = 3.20" B = 1.43" C = 1.41"