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Old 4th January 2009, 16:09   #31
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Default power steering advice

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Originally Posted by DesertKing View Post
Girish, my MM540 also has got a Koyo PS and I know it is a reliable one as I have drived my vehicle on some very tought tarrains where there were a lot's of strain on the wheel. You have done a great job as mine is too much visible. Can you please let me know how many turn you have to give to your steering wheel to move the wheel from one end to the other. I mean turn to the maximum left, now start moving the wheel to the fully right, how many turn of the wheel. If it takes less turns that mine that I would like to go for this change as I am not happy moving steering wheel so much always.
DeserKing,

An urgent question - i've got a similar power steering setup to yours installed on my 550 as well and while all the work has been done neatly and it seems to be working just fine, the mechanic was saying there's just little little bit of wobble in the kamani. Could this be because the power steering wasnt installed properly? Plus am on my last penny and still dont have a rear roof on my car any help on how much it would set me back by would be really really appreciated.

K
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Old 4th January 2009, 17:36   #32
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Originally Posted by Kabeer View Post
DeserKing,

An urgent question - i've got a similar power steering setup to yours installed on my 550 as well and while all the work has been done neatly and it seems to be working just fine, the mechanic was saying there's just little little bit of wobble in the kamani. Could this be because the power steering wasnt installed properly? Plus am on my last penny and still dont have a rear roof on my car any help on how much it would set me back by would be really really appreciated.

K
Kabeer, let me share my experience on PS with you..

Until now I have driven my Jeep for more than 3000 Km and 40% of which was off roading (which includes drive on small hills, hi speed on kachcha paths and very sharp turns) and I never had any issue related to wobble.

Yes, I did encountered the problem of wobling for a day after I completed the initial run of 500 Km. That day when the speed is 50 KMPL or more and if the front tyre of the Jeep hit any bump/speedbrakers, they were wobeling and it was too horrible for me. While checking, I noticed that the mounting of the power steering was broken. Infect I abuse the Jeep so badly in my initial run as I really wanted to check if something is weak and not durable. This was welded well again by a confident welder who put some extra iron to strenthen it better.

If the wobling exist, that mean there is some play in the main unit of the power steeting (the black one on which Koyo, Japan is written) and which can be cause to create the wobble.

I am posting a few more pic of the power steering set us so you can understand if the whole set up is similar..

1. The first elbow joint… the right rod is going to toward the front side of the Jeep directly in other elbow join adjoined to the top of the power steering.
2. This is the bottom of the PS and the connecting rods going direct to the left wheel.
3. Front view of PS.
4. Top view.
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Old 4th January 2009, 18:07   #33
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Thanks a tonne. The pics do help me understand it better.
Though the problem i'm talking about has more to do with the kamanis, i checked with the mechanic again because i was hyperventilating too much. Apparently the kamani bushes need to be replaced because of which it has an ever so slight tremor when the steering is turned. He assures me though its nothing major and can be done at a later time at a cost of 500-1000 bucks.

Thanks for the pics again, great help.

K
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Old 17th February 2010, 01:22   #34
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Default Immense steering wobbling

I have found The koyo Ps for my mm540. Just waiting for it to get delivered from Delhi. But before I go ahead and install it, I have this enormous wobbling on the steering wheel, with a thud thud sound. and its very irritatiing. This happens whenever the jeep drives into the pot holes.. But handles well on smooth roads and on high speeds. What could be the problem?
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Old 17th February 2010, 10:26   #35
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Quote:
Originally Posted by yamaniac View Post
I have found The koyo Ps for my mm540. Just waiting for it to get delivered from Delhi.
yamaniac, can you please tell me where you sourced the PS from and how much it cost you? I also want to install PS on my MM540 but am having a tough time sourcing the required parts in my town. Your help would be much appreciated.

And sorry I can't give any inputs regarding the problem with your steering - I am a Jeep newbie. I am sure one of the experienced Jeepsters will chime in soon.

Cheers.
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Old 17th February 2010, 11:49   #36
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Quote:
Originally Posted by yamaniac View Post
......I have this enormous wobbling on the steering wheel, with a thud thud sound. and its very irritatiing. This happens whenever the jeep drives into the pot holes.. But handles well on smooth roads and on high speeds. What could be the problem?
The wobbling thing is fairly common with jeeps. Apart from the pot holes, i 've observed it in cases when you are driving over the bumps at a higher speed! What i 've heard the two main areas to check are the kingpin and the tie ends. So you may get those things inspected by the mechanic. More inputs can be provided by experts.
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Old 17th February 2010, 11:58   #37
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@yamaniac:

The wobble is a standard mm540 feature due to worn out king pin bearings/assembly.

@helios:

You have two options for power steering. The cheaper option is to source a Koyo kit from delhi which many delhi jeepers have done. Any of them can help you with it. I think the kit costs about 15K or so. The problem with the Koyo unit is that it sticks out between the bumper and the grill and looks very ugly as you can see in some of the jeeps with this set up.

The more expensive option is to buy a Rane Worm and Roller steering box that comes standard on Bolero 4WD vehicles with PS option. These units are hard to source in the used market as they came only one the Armad Grand and Bolero 4WD. In the south the going rate for a used set is about 25K. New set can be purchased from Rane directly for about 32K.

A cheaper option will be to fit the manual recirculating ball steering box that comes on the Mahindra pick up series. The ration is much higher for these boxes and the effort is much less to turn the tires when compared to the standard steering box, but ofcourse they are as effortless as a power steering. Though the price for this box is only about 6.5K.

Search Arka's and Harjeev's jeep modification threads. Harjeev initally used a Koyo unit and later changed to the MRCBT steering. Arka has installed an MRCBT steering box. I am installing a Rane Worm and roller unit from a Bolero 4x4. Cost me about 25K for the steering box, pump, drop arm and steering rods. It will cost approx another 5K for installation and hoses etc..
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Old 17th February 2010, 11:59   #38
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Originally Posted by H3LIOS View Post
yamaniac, can you please tell me where you sourced the PS from and how much it cost you? I also want to install PS on my MM540 but am having a tough time sourcing the required parts in my town. Your help would be much appreciated.

And sorry I can't give any inputs regarding the problem with your steering - I am a Jeep newbie. I am sure one of the experienced Jeepsters will chime in soon.

Cheers.
I got it sourced from a friend staying in Gurgaon, Who on his recent visit to delhi got it from mayapuri. Although he does not know anything technical. He could get his hands on one. I still need to see if it functions well.. Not sure if it works. Only time will tell. He got it for 2.7 k with a bit of bargaining. I will let you know the source I get these parts from, But first let me install it and see if it actually works.. and if it does, I will help you find one too

Is it possible to Hide the PS kit some where inside the engine area Instead of fitting it to the chassis outside the jeep?

Last edited by yamaniac : 17th February 2010 at 12:18.
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Old 17th February 2010, 13:01   #39
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Quote:
Originally Posted by 4x4addict View Post
....Search Arka's and Harjeev's jeep modification threads. Harjeev initally used a Koyo unit and later changed to the MRCBT steering. Arka has installed an MRCBT steering box..
From Arka's thread it appears that the installation of MRCBT steering is not that easy and requires expertise. Harjeev bought a brand new set but still kept on having problems. Otherwise this could have been the ideal low cost solution.
Quote:
I am installing a Rane Worm and roller unit from a Bolero 4x4. Cost me about 25K for the steering box, pump, drop arm and steering rods. It will cost approx another 5K for installation and hoses etc..
How is the installation? Is it straightforward or you need to do some cutting & welding here and there?
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Old 17th February 2010, 14:22   #40
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Here is a pic of the steering rod. It has some rubber padding below it. is this normal.. Or is this a serious issue I need to get rectified?
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Power Steering on an MM540/550 jeep-photo0113.jpg  

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Old 17th February 2010, 16:28   #41
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Quote:
Originally Posted by yamaniac View Post
I got it sourced from a friend staying in Gurgaon, Who on his recent visit to delhi got it from mayapuri.... He got it for 2.7 k with a bit of bargaining...... first let me install it and see if it actually works.. and if it does, I will help you find one too
Hey thanks. I guess I will wait till your report comes in. Meanwhile I will dust-off the alumni directory and check which of my classmates are roosting in Delhi.

Quote:
Originally Posted by yamaniac View Post
Is it possible to Hide the PS kit some where inside the engine area Instead of fitting it to the chassis outside the jeep?
Yep, I think it is possible. See Girish's pics in page 2 of this thread. He and his dad-in-law managed to fit the PS box in the same location where the manual steering box is located by using a custom-designed mounting frame. He used a Koyo unit... and hopefully, with a good bit of luck, I will be able to guide my mech replicate Girish's effort.

Quote:
Originally Posted by 4x4addict View Post
You have two options for power steering. The cheaper option is to source a Koyo kit from delhi which many delhi jeepers have done. Any of them can help you with it. I think the kit costs about 15K or so. The problem with the Koyo unit is that it sticks out between the bumper and the grill and looks very ugly as you can see in some of the jeeps with this set up.

The more expensive option is to buy a Rane Worm and Roller steering box that comes standard on Bolero 4WD vehicles with PS option. These units are hard to source in the used market as they came only one the Armad Grand and Bolero 4WD. In the south the going rate for a used set is about 25K. New set can be purchased from Rane directly for about 32K. I am installing a Rane Worm and roller unit from a Bolero 4x4. Cost me about 25K for the steering box, pump, drop arm and steering rods. It will cost approx another 5K for installation and hoses etc..
4x4addict, thank you for the detailed information. I do not want to spend too much on this PS mod, so the Rane box option is not in my budget - heck the units costs almost what I spent to acquire the Jeep in the first place. But I will keep an eye out for a used one going cheap. For now, the Koyo unit seems to be the most suitable option.... if only I could source it locally.

Quote:
Originally Posted by 4x4addict View Post
A cheaper option will be to fit the manual recirculating ball steering box that comes on the Mahindra pick up series. The ration is much higher for these boxes and the effort is much less to turn the tires when compared to the standard steering box, but ofcourse they are as effortless as a power steering. Though the price for this box is only about 6.5K.

Search Arka's and Harjeev's jeep modification threads. Harjeev initally used a Koyo unit and later changed to the MRCBT steering. Arka has installed an MRCBT steering box.
Quote:
Originally Posted by Kandisa View Post
From Arka's thread it appears that the installation of MRCBT steering is not that easy and requires expertise. Harjeev bought a brand new set but still kept on having problems. Otherwise this could have been the ideal low cost solution.
This looks like a possible option - provided it is a relatively simple install. I will read-up on this. I also have some confusion - doesn't the MM540 already come with MRCBT steering? If I understood properly, by replacing with a MRCBT unit from Pick-up/camper I get a more heavy-duty box with higher ratio that reduces the effort to steer. Please correct me if I am wrong.
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Old 17th February 2010, 17:03   #42
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Originally Posted by H3LIOS View Post
If I understood properly, by replacing with a MRCBT unit from Pick-up/camper I get a more heavy-duty box with higher ratio that reduces the effort to steer. Please correct me if I am wrong.
You are right. The advantages are:

1) Higher ration hence less steering effort.
2) Very heavy duty box.
3) reduced number of linkages resulting in less steering play.
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Old 19th February 2010, 22:00   #43
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Originally Posted by Salikt View Post
I think Pramod_Cochin has also installed a PS unit on his MM540. Let us hear his words too..
Pramod can you please tell us how do you intalled the PS unit in your jeep.
Dude sorry, didnt see this. very difficult to go through every signle post in this massive forum.

We have used the Bolero rack and pinion and im going ahead with getting it 4-wheel drived. PS was mated with the pump which was there on the Nissan engine. Haven't met with any problem till date. PS came for INR 3000. but labour cost was high, so please learn to bargain while going ahead doing it.

Some pics if it helps.
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Old 7th February 2011, 08:25   #44
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Default Re: Power Steering on an MM540/550 jeep

This is the most helpful thread I've come across. Without asking a single question, all my doubts are cleared! Thanks all!
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Old 7th February 2011, 09:58   #45
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Default Re: Power Steering on an MM540/550 jeep

Jeep Gurus,
pls clear my doubt.
1. for fitting PS, koyo box, what is the correct method ?
1.a. inside the vehicle - in the OE steering box location ? (like giri's mm540)
1.b. or outside the front grille ? (without the bell crank - like naren)
2. or is the MRCBT is the better option than fitting koyo PS ?

best regards.
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