Yanmar Sea Water Pump Leaking (Help on a Sunday). OTB 084
In this video we help out our friends on Sailing Sunday. The Yanmar water pump on their 4JH 75 HP engine.
Sailing Sunday link; https://www.youtube.com/channel/UCLtD...

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Closed Captions (CC):

help on sunday

in this video we help our friends on

sailing sunday

to fix their leaking water pump it's a

yanmar it's one of the mr

4j series engines and this one's a 75

turbo

but there are other engines with the

same block and similar configuration so

if you've got yamaha

it might be worth you watching this

video it's awkward when you're trying to

hold yourself up

um

[Laughter]

we can move those impeller blades yeah

there you go perfect how easy is that

yeah that's actually easier

[Music]

trying to cook a full breakfast through

the

litter box of the front door and the

problem is i got it i got it you got it

so what we've got is we've got his raw

water pump which is here

but it's directly in front of the engine

mounting

and to get these four bolts out here if

you can see all four of them

you need to actually remove the engine

mounted

so we've got to take two engine mounting

bolts off of there

and then behind there's four bolts that

weld it to the engine

then we're gonna prop the engine up and

slide it out

so that we can get the raw water pump

off to change the

lip seals well actually it's a ceramic

seal on this pump

but uh it's actually a better design

than the volvo one

but that's because it's

if you stick your light on that again

yeah there you go so

now we can get this one out and this one

and this one over the back and the one

that's up

back there easily and effortlessly look

at that

ryan's hard work paid off

[Laughter]

oh that's really bright yeah i got these

guys

you can do two things with these engine

mounts right

one is support the engine the ones that

hit the australians over the head

[Laughter]

so i was just saying that ant that

there's

oil on this because um actually you're

telling me why

so yeah we don't have to drain the oil

because the oil sits at the bottom of

the sump

which is right in there but obviously

there's excess oil just around on parts

still

so i was always worried pulling this out

the oil would just drain out no

but it's the oil sitting in the sun yeah

anyway

if i zoom in with this cam right here

what you've got

is there's a there's an oil seal in here

on the back

and that stops the oil from the engine

going that way into the pump

and then on the front the same as our

volvo video you've then got a seal on

the

back of the pump which stops the water

going back into the engine

and that gap is there as a telltale

and you can see you've had water running

out yeah and that's

that's how you know it's either the oil

seal oil comes out

or the water seal on this side and on

this one it's a ceramic one

but it's the same print exactly the same

principles the volvo pump

it's actually just a better design

because it's got this ceramic seal in

the front

all right so now we'll pull this apart

and see what's inside pull it apart and

put it back together again and put it

back on again yeah the fun part see i

thought the hard part would be

pulling it apart and putting everything

back on precisely but the hard part is

actually

putting all this back on precisely

you've got to strip half

the engine down to to get at it but

it's a good design so i showed ryan how

to strip down the pump

and then overnight he uh he cleaned it

all up and we returned the following day

i can show you this tripping down if you

really want to see it

just ask in the comments so you've got

to push

this lip seal into that

seat in there with the spring

facing inwards towards the engine yeah

just a little bit of oil on there

so uh just stick your finger in your

earbud

a little bit on the bronze is it this

bit yeah it's that bottom

uh oil doesn't matter where it goes on

the other side no

so the object what you're trying to do

is you've got to push this

into there with the spring facing up and

push it evenly

without pushing the center oh okay right

you don't want to push that

because that's the actual lip seal part

of it okay

it's got oil on that that's all right

it's gonna have some more on there in a

minute so anything i'll do is drop it in

just drop it in nice and gently

get it roughly in the position and push

on the outside of the

of the seal oh yeah and it should just

press in there nice and gently

all right that's as far as i can give

that my fingernails buddy

so now what you want to do is just push

that on top of there

just push it and push it in

evenly so now we know we're pushing on

the outside edge of that

seal yeah yeah

that bob's your uncle dog hair

yeah so the engine's just gonna have to

make do a dog

here like britney's cooking

just not just quite home is it sure

what's really cool about this

is that um because we do more vlogging

type videos

yeah a lot of guys that watch this will

find it interesting and then people that

want to know will go straight to you to

watch it and

do it because i can't really talk about

this kind of stuff because i don't know

you know ah but you will know when

you've done won't you

that's that's the beauty of having

someone

sort of give you a hand is that you you

learn how to do it

right so that's now sat back in there

and you can see it's even round

around the lip and even the other side

yeah

so can you see it yeah that looks good

yeah yeah look at that

just

it's nice and even in there there's no

picture in the back no

no the picture cuts out on that one

after

save the battery i think that should do

it too so

what you've now got to do is we've got a

let's get our manual oh that's all the

other clips for because it's two

yeah clips in here yeah well that's we

don't need that but we don't need that

because we

one hole to bearing in position front

bearing in position

so that part number 14 which is that lip

seal goes in there first

yeah and then the next piece to go in is

the bearing

then the circlip then the second bearing

and then the big circle you don't put it

on here and then put that in no

because this bearing's being held

against that

edge there with the with the back

circlip but you can't see the circle

it's in there yeah we haven't disturbed

it so that'll be fine

so the next thing you want to do is

you've got to put this

into there without damaging that that

lip seal

yeah okay right so what you want to do

is

see that stops the oil from coming out

that stops the oil that stops the oil

from coming out of the engine

now the trick here is to make sure

there's no dog hairs

yeah yeah which there isn't you've got

to drop that down there

very very gently and not let these

damage the lip seal the lip seals

are really delicate so nice and straight

square

there'll be a little bit of resistance

as it goes on oh there's gonna be

heaps of resistance

that's just the oh the the lip seal just

opening out

no that's that's gonna be so tight you

want do you want there

oh sorry yeah have a look it's going to

be

really resistance i'm thinking like okay

so now that's in there square

what you've done is you've just opened

the lip seal out so the lip seal is

actually grabbing that shaft

and what we now want to do

is we've got a just gently tap this

bearing into there until it sits down

and then the circlip goes where's your

rubber mallet

that was there it is there's one i

prepared earlier

no no no just just just just gently as

flat as you can

grease on the bearings yeah i did oh

yeah yeah it's still pretty tight though

yeah it's a bit on an angle actually

okay

just knock it slightly

you got it

here well you just what i did was i just

pulled that straight in there

yeah and that's why we put that oil on

the shaft so that as it goes down it's

putting oil onto the

onto that lip seal not damaging it now

in here

there's a little circlip that goes in

there and we've got a new one

that'll just help it seat in

again dog here sorry

can i is that paper towel oh you've got

it there i've got it yeah

i think i was going to say i'll bring it

over there and drop that in there

and what you want to do is

using the circlip pliers is you can just

close that down

these are not particularly good set but

now

push that down yeah like that and then

let it open up

okay so now what you need to do

is to make sure that certain it's in

there

is just push it around a little bit

because you want to make sure that it's

in there and if that push

there we go that's that's in there

so that's that's now retaining that

bearing

like out here i wonder if it was um well

i i think what's happened to you at some

point

it's been run dry and ceramic seals

have have to have water around them

they they generate a lot of heat if they

haven't got water on them so i wonder if

someone

has started it and not turned the raw

water on or it's drained out

or um the strainer boxes got full at

some time

and stopped water going through because

ceramic seals normally

last they last forever that can't be

right

yeah well where's that bigger seal gonna

go

it doesn't show it doesn't show

it shows that piece there all as one and

it

it isn't actually one piece is it no

is that if you hold that pump that's

that is part 13

this has that

on the back there so so the water

is not supposed to go past this bit yeah

and that just sits in there we want

this to go on that way yeah oh wait you

can

see that um through there anyway yeah

it goes right down oh that goes right

down here yeah oh so that's what's been

moved

there we go how can i push that

well it's deep

but then when you when you put this on

you're going to push it down yeah that

this is the one that we've actually got

to push in like a bearing again on the

lip seal

this is the ceramic so that

won't go any further until that

is pushed in now here's the difficult

part

we've got to push that in without

damaging that ceramic

into that yeah yeah that's right we use

this uh

well that won't that won't push the seal

in you want

something like a very long socket

yeah because they're spark plugs yeah so

i've got one for the

um i say i've got one a big long one

for my uh

doing my pleats

yeah we've got it mate

so i've taken the these are spark plug

spanners yeah

yeah so they hold the spark plug when

you take them out and what we've done

is taken the rubber out so it's then

deep enough

to push down that nice and evenly

on there

and that's you in that's it

oh yeah yeah you can see that seal so

the ceramic

inside the pump stays still yeah this

one

with the spring pre-loads that

ceramic to the right tension yeah so

the next bit is your just quickly we

meant to put oil

in all that no what the water will

lubricate yeah it's water lubricating

you don't want to put oil on a ceramic

because you'll clog all the surfaces of

it yeah

that's that's one that is gonna that is

gonna be tricky to get that circlip on

but

yeah it's tricky to get it out remember

yeah well the groove is in the shaft

and it's behind the pump so you've got

you've got to

push the circlip down

against the spring until it's hold that

washer is holding that back

so you've got the thickness and of the

washer and the spring to compress

that's well that's the side that's up

because you can see that where the seal

clip was sitting nuts so that's where

the impeller goes

so this is impeller side and that's bare

inside

should i see if i can get that off there

no well you can try

it's only a bit of oxidization

so that is the um that's

that has a circlip side so then that

drops down

over the top of that just to protect it

to protect it and then

we've got to get that circlip which is

the new one

over there while holding that down

against the spring

so it is kind of like a which one do we

need which is the new one

they're both new ones for the bearing

and the other ones for this

right what where's the one that came out

oh yeah of course that one

okay so what we've got to do now is

we've got to put this circlip on

over there you push the back of the

circle and now

what we want to do is try and push oh

yeah in the circle

just push in exactly what i did with the

i'll just put the rubbers back in this

yeah

the exact exact way i just did with the

washer okay

let's just check we're there

we're going to hold this circlip and

spin it yeah i just want to make sure

that circlip really is

home but can you can you see down there

see you're looking for the little ridge

that the circuit

is sitting into yeah yeah i can't see it

i can't see the little ridge

yeah oh no there we go that's it yeah

there it is i just heard it

yeah yeah yeah yeah yeah

i didn't i'll edit that bit out too

[Laughter]

now i can see now you can see the edge

of the little

yeah yeah that where the circuit sits

and it's

in there so it wasn't it wasn't quite

home

yeah it is easy like this is

a lot for me to get my mind because i'm

not a i'm not mechanically minded i'm

more like building minded

yeah but like it's it's simple for me to

do now

but it's knowing those little techniques

not like yeah like when i'm like how are

we gonna do that here

oh that was easy how the we're

gonna do this oh that was easy how the

hell we're gonna do this oh yeah that's

easy

like you know what i mean and now i like

that clip when we put it in now

like i probably would have been like

yeah that's it and kept going

yeah but but then the impeller wouldn't

have fit and then i would have realized

i've taken all that part again and

so it's good to like yeah well i

i wasn't happy that it clipped in like

that and then when i turned it i

couldn't

see the little ridge and now you can see

the river you see it and you heard it

snap in

yeah so it looked a bit high too didn't

it yeah

a little bit well you've got that plate

to go on so that circle it has to be

behind

the back of the pump goes around

that way yeah you see it and now oh yeah

you see the washer what yeah

so now that can rotate the back plate

stays still and the circlip isn't going

to hit that

yeah yeah but water can still get behind

there to lubricate it

okay so that's that bit um

we're on the home street um we've got

well we've got to put that in but first

we need to talk this up

remember how tight yes yes yes so

we'll just drop that plate out for the

moment

so now you want to put some torx seal on

there

lock tight oh yeah thread locker i think

if you stretch over there we've just got

it

there you go

it's okay so we're just tightening up

we're just gonna tighten it up

for now because

once we put the impeller in support and

he's going to have a lot of editing on

this video

so if you hold that on there

oh this is 14 mil yeah

hold it right then because i need to get

the torque

that's it oh so it doesn't click or

anything it just gives you the right

torque

you're on a gauge right it's a good

feeling when you get all that together

right

so there you go mate there's your metal

plate

yeah and that wants to go with the warm

side

down that's right

okay now what have we got all that

what a job and i see the polishing job

on that bronze as well

oh will that sit on top of there

like that there we go so

the next thing is you've got to get that

in there

yeah yeah so there's a couple of ways

you can do it

some people say put a tie wrap around

there

yeah and crush them in now

you can do that but what i find is if

you just put a little bit

of fairy liquid on these the fairy

liquid won't hurt the ceramic

yeah yeah because it's water soluble

and it won't damage these but if you use

oil

you'll damage the ceramic yeah and your

depth and these don't

impellers don't like oil so if i show

you how to do this one you'll know how

to do

the next one yeah because i've got a bit

of a technique

okay yeah because i just sit there

halfway with holding a view of my board

shorts hammering in

however i get it in i've got glycerin as

well i have an impeller

grease i got impeller grease you don't

need

all we're doing is just lubing that up

yeah so

when we push it in we can move those

impeller blades yeah

there you go perfect how easy is that

yeah that's actually easier than that uh

that's using the

the glycerin grease whatever although

although in my defense

in my defense i'm sitting there like

well yeah right trying to do it

right so that's good very the very last

thing we're going to do is clean out

that

so the other thing i'm going to do is

where's that and that's actually in

better now

um usually when i put these in it's kind

of still sitting down a couple of like

not a couple of like a millimeter

yeah and i'm just but obviously we've

cleaned the whole pump out now it's

sitting there a bit more flush

yeah this i remember this this had to go

right on the inside of that yeah

imagine hey so but i mean

now you know how it works and how it

goes yeah go together

you're gonna be at a sky you know the

next guy that comes along and goes oh

no me pump on there you go

[Laughter]

i just got finished washing up first

yeah yeah he's uh

putting stuff away as we're making more

of a mess so just

on the top surfaces just just a

tiny little bit that's it that's fine

yeah so

do this one here first don't take it

right home

and then do this one so that you're

pulling it down evenly on that o-ring

yeah

and then go this one

and i haven't pushed them right home you

wanna

ten in it

there you go i think that's the uh

yeah i bet the m10 is missing

there you go so that one next

you literally just just pinch them

that's it

now these don't need to be tight because

the o-ring is under compression so all

you're doing is just

pushing the face plate against the

o-ring

so they'd be tight enough not to come

out but not so tight you strip them off

yeah yeah there one rebuilt pump

all done

that's cool

oh it's not dirty

now we've got to do is whisk that back

on put the

put the uh

pipes back on yeah and then put the

engine mounting back in position

yep then put the heat exchanger back in

yeah

yeah so i gotta um do all that

i'll do all that today am i getting your

hand actually put the engine mount back

on maybe

well that's why i bought the ratchet and

spans over because they're a lot easier

to

to use on the working spaces

what's that we're gonna put that back

yeah no i'll put it back on but i'll do

all the heating either side

that's it now this one here

just again to pull down on that gasket

evenly

now throw the engine mount back on

kind of one the four bolts we snap onto

the um

the main block here and

then we've kept these ones up tight as

we mentioned earlier

and then we'll put it wherever it ends

up with a script back down hopefully

engine hasn't moved at all

so i've got poor hat in there working

hard that's the face of her

stressed out man no it's kidding he's

actually really coming is exactly what

he's doing

he's getting the one at the back that i

can't get to

and then i'll do these other three so

he's doing the top

your top right eight yeah yeah and then

i'll

do the bottom left and then we'll play

around and then we'll do a full tighten

up did you not get that finger tight

the other ones oh no no i didn't no i

didn't get it finger tightened up

right i'm wondering oh sorry yeah i

couldn't

get to it properly that's why i need to

do it

we've got stage in the back there he's

on light duties

holding the light on light duties a

little bit of light work there eh

there you go mate that just wants

pinching up

so you you're just about done then now

mate yeah

yeah i can't find my toothbrush ryan

have you been using my toothbrush

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