spent a fortune on manuals.

[demaris]

i'm a manual guy. i can read these and blissfully go to sleep in the evening.

question: why am i finding things when removing the engine that aren't addressed in the manual. is a twin outdrive unusual? the oil feed for the lower end on my 7.4l lower end is, or i missed it, not addressed on either the engine removal or the bell housing removal. which, by the way is a crap installation. am i missing something? should i have asked for a different manual. further, my port 7.4l has power steering hoses but no pump. boat is new to me. 35 express thundercraft. twin 7.4l mercruisers. is there a missing power steering pump? it's current arrangement is that the starboard motor provides the power steering. engine not completely removed.
is there only one ps pump in a twin arrangememt? can't wait to find the next thing that rumsfeld would identify at "those things that we didn't know that we didn't know"

 

[GA_Boater]

Twins have one power steering pump and one actuator. A tie bar connects the two steering tillers.

What oil feed?

 

[Scott Danforth]

i'm a manual guy. i can read these and blissfully go to sleep in the evening.

question: why am i finding things when removing the engine that aren't addressed in the manual. is a twin outdrive unusual? the oil feed for the lower end on my 7.4l lower end is, or i missed it, not addressed on either the engine removal or the bell housing removal. which, by the way is a crap installation. am i missing something? should i have asked for a different manual. further, my port 7.4l has power steering hoses but no pump. boat is new to me. 35 express thundercraft. twin 7.4l mercruisers. is there a missing power steering pump? it's current arrangement is that the starboard motor provides the power steering. engine not completely removed.
is there only one ps pump in a twin arrangememt? can't wait to find the next thing that rumsfeld would identify at "those things that we didn't know that we didn't know"

quite a long rant without a statement of an issue / problem

GA covered PS plumbing.

what other issues do you have? please be specific and concise

 

[achris]

... why am i finding things when removing the engine that aren't addressed in the manual....

My first question would be, 'Which manuals are you using?' (Genuine or aftermarket)

And my next statement is 'The target audience for these manuals is a professional technician/mechanic.'

There will be many things left out because it is already 'expected knowledge'. Knowledge that all professional mechanics are expected to have. If you aren't an apprenticed marine technician, then you will have gaps in your knowledge, some of which may be the issues that are not addressed, that you refer to... One of which you have already demonstrated, the PS pump. All professional marine mechanics know that only one engine (in a twin set up) having the pump is the usual way it's done. Most of us wouldn't give that a second look....

Chris........

 

[demaris]

sorry for the rant. these are not only merc service manuals but seloc and clymer. just trying to find out what was supposed to be there or why the drive unit has this oil mechanism that is not addressed in any of the manuals. and is the normal twin install a single or dual power steering pump design. again sorry for the rant.

 

[alldodge]

PS on twins come installed in two ways; One ram and 1 pump, and One ram and 2 pumps.

The 2 pump method takes one of the PS pumps and routes the hose back to the reservoir. Both pumps have fluid but one just pumps back to itself and not to a ram.

My guess is the dealer removed the parts so they could sell/use them on other motors when needed.

The things your discussing have never been documented in a manual that I've seen but others may know different

 

[Scott Danforth]

sorry for the rant. these are not only merc service manuals but seloc and clymer.

seloc, haynes and clymer sell toilet paper and knee pads. the information in them in mostly incorrect for boats, so they would make terrible manuals if you had to rely on them

 

[GA_Boater]

I gotta ask again - What drive oil mechanism? The drive lube oil tank?

 

[achris]

.... these are not only merc service manuals but seloc and clymer. ...

Well, there's at least half the problem.... Seloc and clymer manuals are known for having wrong and/or missing information... As Scott suggested, they make great kneepads and toilet paper, and not much else.

As for the steering pump situation... Merc do make a 'priority valve' so there can be a pump on each engine driving just the one ram, but as this 'costs money', most manufacturers and dealers set them up the way you appear to have yours, one pump, one ram... Cheap (and nasty), but it works (until you lose that engine, then you're on manual steering)...

As for the 'oil system' on the drive. No idea what you're talking about. Please post photos, and what drives you have (Alpha, Bravo, TR/S)...

In fact, if you post the engine and drive serial numbers (all 4), I should be able to find a link to Genuine manuals for you...

Chris.......

 

[demaris]

Well, there's at least half the problem.... Seloc and clymer manuals are known for having wrong and/or missing information... As Scott suggested, they make great kneepads and toilet paper, and not much else.

As for the steering pump situation... Merc do make a 'priority valve' so there can be a pump on each engine driving just the one ram, but as this 'costs money', most manufacturers and dealers set them up the way you appear to have yours, one pump, one ram... Cheap (and nasty), but it works (until you lose that engine, then you're on manual steering)...

As for the 'oil system' on the drive. No idea what you're talking about. Please post photos, and what drives you have (Alpha, Bravo, TR/S)...

In fact, if you post the engine and drive serial numbers (all 4), I should be able to find a link to Genuine manuals for you...

Chris.......

sorry for the delay. yes i should have given the numbers.
1994 mercruiser 7,4l Bravo II, transom 0F210561, drive 0f185301, engine 0F159255

using the standard merc service manuals.and the others. wish i could get a parts manual with exploded drawings.

eventually found reference to the oil system that i was talking about in the electrical section. apparently;y there is a sensor switch at the bottom of a small oil reservoir on the forward starboard side of the engine. this feeds by tube to the transom, through that to the bell housing. bell housing receives the oil tube and and then transfers the oil to the drive unit with a schrader like valve/coupling setup. maintains oil level in the drive units. need to visually inspect the reservoir occasionally to confirm oil level.

regarding the power steering. i did loose the high pressure ps hose on the starboard engine and with it power steering. upon beginning disassembly of the port engine i discovered that the bracket for a ps pump was there, no pump, hoses present but not connected.

pretty much the history. had to cut the small oil hose to get the bell housing off. now need to get a new small section, preferably oem to replace that section which is almost impossible to secure. maybe merc itself will have a part number and the o ring that interfaces with the drive unit.

 

[achris]

engine 0F159255
transom 0F210560
drive 0F185301
1994 Mercruiser 7.4l, Bravo II


using the factory merc manuals and the others

1994 7.4L Bravo Gen V Model 474B110GS - engine manual: https://drive.google.com/file/d/0B1TAvwZ3TjhfdFg5bUY1SjVla3c/edit?usp=sharing
1994 Bravo 2 (2.00:1) Model 5220200GS - drive and transom manual: https://docs.google.com/file/d/0B1TAvwZ3TjhfRUk1Y0NndVNzS0E/edit?usp=sharing

Cheers,

Chris.....

 

[achris]

Yes, that oil system is the monitor. Nothing complex about it, just a reservoir that gives a visual indication of oil level. Again, not covered in much detail in the manuals as it's expected knowledge. It's standard fitment to all Mercruisers after about 1992.

The hose you want is 32-8M0040618. (#7 in this drawing... https://www.mercruiserparts.com/bam/.../30966/952/180)

Here's links to your parts breakdown.
Engine - https://www.mercruiserparts.com/454-...454-v-8-1992-1
Drive - https://www.mercruiserparts.com/brav...-thru-0f729999

Chris......

 

[alldodge]

To replace the hose (normally comes with a hose if kit) use soap. Place a tie-rap real loose on the brass fitting. Soap up the hose (tube) and start to slide it in place. In most cases will need needle nose pliers to finish pushing the hose on. Once on use the tie-rap and tighten on the hose

 

[Bt Doctur]

No need to buy them , just look on the net
Hit up a good auto parts store for some oil resistant hose and get it 2 inches longer than the merc length. Makes installation a lot easier and helps prevent breaking the plastic nipple

 

[demaris]

1994 7.4L Bravo Gen V Model 474B110GS - engine manual: https://drive.google.com/file/d/0B1TAvwZ3TjhfdFg5bUY1SjVla3c/edit?usp=sharing
1994 Bravo 2 (2.00:1) Model 5220200GS - drive and transom manual: https://docs.google.com/file/d/0B1TAvwZ3TjhfRUk1Y0NndVNzS0E/edit?usp=sharing

Cheers,

Chris.....

got 'em. thanks for the links

 

[demaris]

Yes, that oil system is the monitor. Nothing complex about it, just a reservoir that gives a visual indication of oil level. Again, not covered in much detail in the manuals as it's expected knowledge. It's standard fitment to all Mercruisers after about 1992.

The hose you want is 32-8M0040618. (#7 in this drawing... https://www.mercruiserparts.com/bam/.../30966/952/180)

Here's links to your parts breakdown.
Engine - https://www.mercruiserparts.com/454-...454-v-8-1992-1
Drive - https://www.mercruiserparts.com/brav...-thru-0f729999

Chris......

got the links, again thanks. part #7 is a pia!

 

[demaris]

To replace the hose (normally comes with a hose if kit) use soap. Place a tie-rap real loose on the brass fitting. Soap up the hose (tube) and start to slide it in place. In most cases will need needle nose pliers to finish pushing the hose on. Once on use the tie-rap and tighten on the hose

i'll give it a try though there is zero room between that and the shift bellows. think it was the shift bellows

 

[demaris]

No need to buy them , just look on the net
Hit up a good auto parts store for some oil resistant hose and get it 2 inches longer than the merc length. Makes installation a lot easier and helps prevent breaking the plastic nipple

thumbs up, thx