Boat

Have Boat Questions? Ask a Boat Repair Expert.

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

How do you disassemble and reassemble mercruiser power steering…

How do you disassemble and...
How do you disassemble and reassemble mercruiser power steering cable and power steering cylinder ram to clean and check , plus refill and bleed.
Show More
Show Less
Ask Your Own Boat Question
Answered in 1 hour by:
4/4/2010
Kenny
Kenny, Marine Mechanic
Category: Boat
Satisfied Customers: 99
Experience: Mercruiser Sterndrive and Mercury Outboard Expert. 34 years Diagnostics & Parts
Verified

Hello,

Your 1988 Mercruiser used the Saginaw style steering cylinder assembly.

The steering cable from your helm attach's to the steering actuator valve assembly with a large aluminum cable nut. I believe it fits a 1-1/8" wrench.

This aluminum nut is often locked into place with a retainer. The retainer is held in place with a small bolt.

Loosen the bolt and remove the retainer as so you can use a large open ended wrench to un-fasten the cable nut.

Now... the core of the cable passes through the cable guide tube, out the port end of the tube and the end has a 3/8" pin and cotter pin holding it to the end-yoke and steering lever. Remove the small cotter pin and remove the 3/8" pin.

You will now be able to pull the entire cable out and away from the power steering cylinder and tube assembly. You might have to steer your steering wheel to the left (port) side to retract the core of the cable as so it comes out with less distance.

 

Steering cables get old, corrode, rust and wear out.

If this is the original cable I would consider installing a new cable.

You can not really grease a cables core in the sheathing.

If in doubt... change it out.

 

As for the rest of the power steering assembly. Chances are good you do not need to remove the unit unless it is rusted bad and ready to leak or leaking.

The tube that the cables end was sliding in and out of can get internally corroded.

You can buy a wire brush from West Marine which you can attach to a drill and ream out the inside of the tube. This cleans out any build up of salt or corrosion as so the end of the new cable will slide easily after it is installed and greased.

This is usually all you need to do to "service" a steering cylinder assembly.

 

If you need to remove and repair or replace the old hydraulic cylinder assembly there is something you need to know.

The older units are no longer being manufactured. The unit was steel and would rust. It had two external metal tubes which would also rust and leak. You can no longer buy the metal tubes.

Instead... you would upgrade to the new no-feedback DHB Cylinder Assembly.

The new DHB unit is made of stainless and aluminum.

It will fit right in place of the older unit.

The "thing" is this... your old power steering hoses are SAE and the new DHB unit requires METRIC hoses.

No problem! Mercruiser sells a DHB KIt which includes the new metric hoses which have SAE hose ends to fit your cooler and power steering pump.

The part number is 806034A2 DHB Steering Upgrade Kit $463.90
You can find this part online at http://www.sterndrives.com/merc/driveparts/POWER%20STEERING%20COMPONENTS.html as well as a few other sites or you can check with your local Mercruiser Dealer.

First, remove the two hoses from the valve mechanism using line wrenches.

Your old assembly is held in place with two stainless swivel pin bolts.

One is on top and one is underneath.

These bolts are locked into place with stainless locking tab washers.

You will have to bend the tabs out of the way to remove the two bolts.

I think you will need a 1" wrench and the bottom bolt is very difficult to access

while the engine is still in the boat. Not much room to swing a wrench!

 

When you install the new DHB unit make sure you bend the tab washers back onto the heads of the bolts to keep them from coming out.

The tube on the DHB has two flat spots. These flat spots need to be vertical or the steering can shudder during a turn.

 

As for your power steering fluid.

If you disconnect all the hoses the fluid will leak out of the pump.

This will be a mess in the bilge so be prepared to clean it up.

Refill the pump with Dextron II Transmission fluid after all the hoses are installed.

The unit is self bleeding.

 

Make sure that when you install the new steering cable that you reinstall the retainer for the cable nut and make sure the sheathing of the cable is not tie wrapped or restricted from moving freely.

 

Check all cotter pins and cross pins for proper installation.

Check all hose fittings for leaks when the engine is running.

Steering from left lock to right lock a few times with the engine running to make sure the cable is properly installed and working correctly.

 

Please let me know if you have any other questions.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Kenny
Kenny, Marine Mechanic
Category: Boat
Satisfied Customers: 99
Experience: Mercruiser Sterndrive and Mercury Outboard Expert. 34 years Diagnostics & Parts
Verified
Kenny and 87 other Boat Specialists are ready to help you
Ask your own question now
Customer reply replied 8 years ago

How hard is it to separate the cable guide tube from the power steering actuator to clean, the power steering cable has been removed. Also I have probably lost most of the power steering fluid in the actuator,is this a problem to refill. Power steering pump is still mounted , did not remove any hoses at the pump itself just at the actuator.

Customer reply replied 8 years ago
please answer follow up question.
Customer reply replied 8 years ago
please advise, I have probably lost most of the fluid in the actuator is this a problem to refill and bleed off the air.

I do not recommend trying to remove the steering cable guide tube from the valve.

There is swivel nut which holds the tube adapter to the valve BUT the stud that the adapter fits onto is tapered so it is a very tight fit. It is very much like a ball joint stud.

This means extreme force and special tools are required to remove the adapter from the tapered stud. You might damage the unit trying to disassemble it.

I recommend that you remove the unit as a complete assembly (cylinder, tubes, valve and guide tube) all as one assembly.

 

The steering system is self bleeding.

Once assembled you will fill the pump and start the engine.

You will then slowly turn the steering back and forth a few times and refill the pump.

 

 

 

Ask Your Own Boat Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a marine mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Kenny Your Own Question
Kenny
Kenny
Kenny, Marine Mechanic
Category: Boat
Satisfied Customers: 99
99 Satisfied Customers
Experience: Mercruiser Sterndrive and Mercury Outboard Expert. 34 years Diagnostics & Parts

Kenny is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Ted G.

Ted G.

Rigger, Diagnostician

695 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

15,782 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,003 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,728 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

< Previous | Next >

Related Boat Questions
I have steam coming out of my Telltale on my 89 Mariner
Hello I have steam coming out of my Telltale on my 89 Mariner Outboard. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Can not get power from batter to ignition switch on a 50hp
can not get power from batter to ignition switch on a 50hp mercury 4 stroke outboard … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
To you... we have changed plugs, newgas, cleanouy filter but
good day to you... we have changed plugs, newgas, cleanouy filter but motor will not stay running... the more gas you give the motor shuts down....any suggestions...maybe carb?? … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,003 satisfied customers
I have an '87 mercruiser stern drive 260 hp alpha 0ne v8.
I have an '87 mercruiser stern drive 260 hp alpha 0ne v8. The mechanic who winterized the boat last fall failed to reconnect one of the water cooling hoses. When I first started the engine this and ba… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
I just bought a tracker proteam 175 TXW June 12th. I was
I just bought a tracker proteam 175 TXW June 12th. I was tlrying to wiire up a lowrance fish finder on the bow. I cut the trolling motor wires to splice in. after I put the trolling motor lwires back … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
OMC Out drive won't go up. OMC out drive won't go up
OMC Out drive won't go up JA: Sometimes things that you think will be really complicated end up being easy to fix. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts.… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,003 satisfied customers
I have a 1989 OMC Cobra 4.3 L I/O. The boat ran fine all day
I have a 1989 OMC Cobra 4.3 L I/O. The boat ran fine all day on Saturday and at the end of the day it got stuck in reverse. The control shifter moved mor smoothly forward and reverse but the boat woul… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
I have a question. Sorry about that I have a 92 40 hp motor
sorry about that I have a 92 40 hp Johnson motor I just had the carbs rebuilt it runs good and everything but when in neutral it will die and wont start up until I spray starter fluid can u help me diagnose the problem … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,003 satisfied customers
I changing a cylinder head on my 2000 85hp Yamaha 2 stroke
Hi I changing a cylinder head on my 2000 85hp Yamaha 2 stroke tomorrow and im wondering if you could tell me the torque settings for the cylinder head bolts and the cover bolts please. cheers Paul … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Mercruiser 3.0 got wet(forgot to put plug in.)water just
Mercruiser 3.0 got wet(forgot to put plug in.)water just over starter. Turning over but won't start.??… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Turn the switch to start engine and nothing. All seems to be
Turn the switch to start engine and nothing. All seems to be dead. All worked perfectly two eels ago. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
I have a terrova 80 serial number K323MK00866 When the motor
I have a terrova 80 serial number K323MK00866 When the motor is up in the bracket, not being used it will no longer lock into position falls down I believe that the plastic stow deploy lever is broken… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Have a 2012 Mercury Optimax 125 two stroke with an oil tank
have a 2012 Mercury Optimax 125 two stroke with an oil tank reservoir for mixing the fuel. There is an alarm that will come on if the oil is low and the boat will be restricted to only 1k rpms . This … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Just purchased a new boat and it has a GP-1670F/GP-1870F GPS
Just purchased a new boat and it has a GP-1670F/GP-1870F GPS plotter (FRN-520BLD) . … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I have a 2007 150 HP 4-stroke with 550 hours. I am having a
I have a 2007 150 HP 4-stroke with 550 hours. I am having a slight oil ;leak seeping out of the housing below the engine. Under the engine hood around the oil filter and that area all looks clean. Hel… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I'm thinking of buying a 2006 Bayliner 192 with a Mercruiser
I'm thinking of buying a 2006 Bayliner 192 with a Mercruiser 3.0 and the seller is asking $11,000. What number of hours do you think is good for this price? Boat looks clean and not abused but I am a … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Want to speak with technician about returning 1048 super HD
Want to speak with technician about returning 1048 super HD antenna for service. Unit will not wake up after shut down. Appears to be an ethernet communication issue at antenna. (###) ###-####after 12… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Installed a new Hook3. Installed a new Hook 2 7and it worked
Installed a new Hook 2 7and it worked perfectly In driveway.launched the boat hooked up unit and it displays the start up screen for about 20 seconds then dims or goes off can't tell but it beeps when buttons are pushed but no legible display. … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x