How To Change A Power Steering Pump On A 2008 Chevy Impala
- To be continuously available, movement the rudder rapidly to whatsoever position of degrees in response to the club from the span during manoeuvring and hold it in the required position
- have arrangements for relieving abnormal stress and returning it to its required position
- maintain the ship on grade regardless of air current and waves.
Testing in Port and prior to Departure
The regulations SOLAS Affiliate V Regulation 26 and 33 CFR Chapter ane 164.25 �Tests before entering or getting underway� have to be complied with. During stays in port between voyages or passages a test is to be carried out within 12 hours of the estimated time of "stand by deviation".
Normal adequate practice is one hr before departure, with all the generator/alternator engines required for standby on line, and Bridge and Engine room watchkeeping officers on duty. Prior to testing, the following checks are to be carried out :
- The hydraulic oil levels in the chief gear, its reserve tank (minimum level equivalent to 90% full capacity), and the telemotor systems.
- The grease points and greasing arrangements.
- A visual inspection of the steering gear and associated linkage.
- The communication system between the steering gear compartment and the bridge.
Testing is to include the post-obit:
- The main steering gear, power units, pumps, and hydraulic machinery.
- All the span manual steering controls.
- The bridge/steering spaces electrical control system.
- Manual operation of steering control.
- Power Unit failure alarms.
- All remote rudder bending indicators.
- Swinging the rudder from difficult to port to difficult to starboard.
- Automatic isolating arrangements and other automatic equipment.
During this functioning, the remote rudder bending indicators are to be checked for accuracy with the principal indicator affixed to the steering gear. The ammeter readings from both motors are to be recorded in the Engine Room Log. The fourth dimension taken for the rudder to move from hard over (35 degrees) from one side to the other is to be recorded for both motors singly and and so both together. These times are to be compared with the manufacturer�southward specified times.
Fig:Typical 4 ram steering gear system for cargo ships
If the fourth dimension taken to move the rudder from 35 degrees on either side to 30 degrees on the other side exceeds 28 seconds when using both motors, then the advisable management office is to be advised. It is of import that as the rudder approaches the hard over position, the �stroke� comes off the pump or pumps in use, slowing downward the rate of discharge from the pumps and thus the charge per unit of traverse of the rudder. This functionality is necessary in club that the rudder does non overshoot the designed limits of travel. A feedback arrangement consisting of a floating link in the control of the pumps or an equivalent electronic arrangement takes intendance of this and it is important that testing of the steering system checks that this happens.
When hard-over, the rudder must not exceed its designated limit as this could lead to the rudder getting stuck in this position. The SOLAS requirement is 35 degrees on both sides.
A pitter-patter test is to be carried out, and the results recorded in the Engine Room Log. Proof marks of rudder to tiller arm, and vessels with taper fit connections are to be checked to ensure no deportation or slippage has taken place. Vesture down is to be checked using the poker gauge or other device every bit advisable, and the readings recorded in the Engine Room Log.
Where no proof marks or means of checking are available the office is to be informed, and such marks introduced every bit soon every bit possible. In port, when the vessel is at a suitable typhoon and access is available, the Chief Engineer is to sight the rudder stock connections i.due east. palm bolts etc. and where possible the jumping clearance. With rudders which do not accept externally visible connections, the position of the rudder in a horizontal airplane relative to the sternframe/hull is to be advisedly scrutinised.
Whatsoever evidence of damage, slackness, or alteration in the rudder position relative to the vessel's hull in a horizontal plane is to be reported to the Office immediately. Following a repair period, drydocking, or lay up, a test is to be carried out as soon as is practical.
Testing at Bounding main
Testing of the steering gear at sea is at the jurisdiction of the Master. The Master is to be on the Span and the Main Engineer in the steering gear compartment at the time of the test. (33CFR Chapter 1 164.25 to exist complied with)
Nether normal sea speed, the rudder is to be put from hard to port to hard to starboard on one motor, and then on the other motor. This procedure is then to exist repeated using both motors. The ammeter readings during these tests are to be recorded and entered in the Engine Room Log Book. If the time taken to move the rudder from 35 degree on either side to 30 caste on the other side exceeds 28 seconds when using both motors then the appropriate management office is to exist advised.
On vessels with steering gear designed to operate with only one motor on even when manoeuvring (the second motor being on stand-by), single motor operation should see this criteria. A pitter-patter test is besides to exist carried out and the results recorded in the Engine Room Log Book. Pitter-patter Examination - With ane motor on a setting midships If the rudder creeps more than 5 degrees in 1 infinitesimal then management office is to be advised.
Emergency Steering Drill
An Emergency Steering Drill is to be carried out at least once every iii months. It is to consist of direct operation of the master steering gear by transmission control inside the steering compartment. Steering is to be directed by communication from the bridge to the steering compartment. Where applicable, the operation of alternative power supplies is to be tested. Notices are to exist posted adjacent to the steering gear emergency station with a warning that no testing of the steering gear control system or its components is to take place whilst the vessel is underway, unless under the directly supervision of the Chief Engineer. All ship�s staff must be fabricated aware of this requirement.
Electrical, Hydraulic and Mechanical Change-Over Procedures
All Engineer Officers must be able to carry out the electric, hydraulic and mechanical modify-over procedures. If non in existence, a valve position diagram must be produced with the position of all valves. Such valves are to be clearly marked past numbers or letters.
These diagrams would ordinarily prove the post-obit situations, unless the steering gear is of the rotary vane type:
a) Starboard hydraulic pump in use;
b) Port hydraulic pump in use;
c) Starboard and port hydraulic pump in use;
d) Emergency hydraulic pump in use;
east) All iv hydraulic rams in utilise;
f) But later reverse hydraulic ram in employ;
g) Only frontwards opposite hydraulic ram in use;
h) Only starboard hydraulic rams in use;
i) Only port hydraulic rams in use.
The Master and Chief Engineer are to report to the relevant Direction Office, common hydraulic pipes in the system which in instance of failure, would result in having the whole steering gear out of order.
Rudder Arrestor Systems
On vessels fitted with a rudder arrestor arrangement, all Engineer Officers must be familiar with, and exist able to operate, the system.
Records
Log Book entries are to be made when all inspections and tests are conducted and when emergency steering drills are carried out.
Related information
- Ships steering gear testing requirement The regulations SOLAS Chapter 5 Regulation 26 and 33 CFR Chapter 1 164.25 �Tests before entering or getting underway� have to be complied with. During stays in port between voyages or passages a test is to be carried out inside 12 hours of the estimated time of "stand by departure"....
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- Ships steering gear system and testing requirement The chief steering gear is to be capable of putting the rudder over from 35� on one side to 35� on the other side with the ship at its deepest draft and running ahead at maximum service speed, and under the same conditions from 35� on either side to 30� on the other side in not more than 28 seconds.....
- Ships steering gear electrical control The electrical remote command system is commonly used in modern installations since it uses a small-scale command unit as transmitter on the bridge and is unproblematic and reliable in operation.Movement of the bridge transmitter results in electrical imbalance and current catamenia to the motor. .....
- Ships steering gear telemotor command Telemotor control is a hydraulic control arrangement employing a transmitter, a receiver, pipes and a charging unit of measurement. The transmitter, which is built into the steering wheel panel, is located on the span and the receiver is mounted on the steering gear..
- Ships steering gear testing requirement The regulations SOLAS Chapter V Regulation 26 and 33 CFR Chapter 1 164.25 �Tests before entering or getting underway� have to be complied with. During stays in port between voyages or passages a test is to exist carried out inside 12 hours of the estimated time of "stand past divergence"....
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