Derek Lawler wrote:

Wait, lower cover? The lower cover should be able to stay in place, the
upper cover does have to come off though, at least that's how it is in
the B23 I did a couple weeks ago. Does the cover really block it on a B230?

Chilton manuals are worthless, they tend to cover multiple models
through decades and don't cover anything very well. Get a Haynes or
Bentley for your specific car, they're far more concise.

Here's what I found: As I looked closer at the bottom part of the timing
belt cover I noticed it was not integral with the inner part but held in
place by the bolt on my left, that covered the flange of the water pump and
feeling around and using the flashlight I found a bolt holding the other
side of the lower cover at the bottom. I got a 12mm wrench on it and
loosened it then unscrewed it with my fingers. The bottom cover was now
jiggling around loose (hopes raised again). HOWEVER: the lips of the cover
are grooved and could not be pulled apart enough to slide it up and out as
it is tight up against the pulley. At this point I realize the crankshaft
pulley does have to come off (or be slid back 1/4" ?) to get the lower cover
off, meaning that the other two belts on the alternator and AC pump had to
be removed. I am leery of taking off the crankshaft pulley and misaligning
its relation to the timing belt. Is the bolt or nut a left hand thread?
Will have to muddle through---good thing I am retired.
Derek

Derek Lawler wrote:

Well yeah, you do need to take all the belts off, but you shouldn't have
to remove the timing belt. Seems like the only time I've removed the
crank pully is to do the timing belt. If the car is an automatic it's
tricky to lock the crank to remove the pully but what I've done is put a
bit ratchet on it (22mm bolt IIRC) and wedge the ratchet handle
against the water pump and bump the starter, that'll loosen it right up.
The timing belt sprocket is separate and is keyed on the shaft so you
won't mess that up.

The lower cover circles the crankshaft so if you do in fact have to
fully remove it, you have to remove the pully. I wish someone who's done
this recently could confirm it though because I don't recall removing
the lower cover to do the pump.

The lower cover does not have to come off to change water pump. Steps are as
follows. 1) disconnect negative battery lead. 2) REmove accessory drive
belts as necessary for access to water pump pulley. 3) Drain cooling system.
4) Remove radiator and fan shroud. 5) Remove fan fromthe water pump then
remove water pump pulley. 6) Disconnect radiator bottom hose and heater pipe
from the pump. 7) Unbolt the water pump, slide it downwards and remove it.
8) Clean away all traces of sealant and old gasket from the mating faces. 9)
remove old pump top sealing ring. Refit new pump, gasket, top sealing ring
and heater pipe seal. 10) Replace in reverse order to dismantling procedure.

All done without removing ANY covers.

All the best, Peter.

700/900/90 Register Keeper,
Volvo Owners Club (UK).

"James Sweet" <jamessweet (AT) hotmail (DOT) com> wrote

Peter K L Milnes wrote:


I'm almost positive you have to remove the upper cover, I know I did on
the B23 I replaced the pump on a couple weeks ago. The cover was over
one edge of the water pump.

Thanks to all of you that responded to my questions.
The Volvo in question is a 1994 940 wagon, non-turbo.
Today I pulled off the water pump, scraping my arm as I did so.
The way I did it was to bend the lower cover over far enough to let the pump
slide past it. This could not have been done without removing the two bolts
securing the cover. I had enough wiggle room to push it over out of the
way.
According to my owners manual my engine is a B 230 F/FD and does not have
the fan connected to the water pump, nor did I have to move the electric fan
and housing. I also saw no reason to disconnect the battery or drain the
whole cooling system. I did lose some power steering fluid when I pulled
the hose off the pump to get at the belt adjustment screw.
Now comes the meticulous work of fitting the new pump in place with all its
neoprene grommets, o rings etc.. This will be the fun part of the job.
Thanks again. I am going to look for a comprehensive shop manual for this
car.
Derek

In article <4nd73eF9rtlbU1 (AT) individual (DOT) net>,
Derek Lawler <dereksl2 (AT) bellsouth (DOT) net> wrote:
[ ... ]

Lubricate the grommets, o-rings, and anything else that needs to slide
into place with silicone grease to ease assembly. Don't use any petroleum
based grease, it would degrade the seals.


Gary

--
Gary Heston gheston (AT) hiwaay (DOT) net http://www.thebreastcancersite.com/

Astronomers have developed a definition of "planet" which excludes Pluto.
I'm developing a definition of "scientist" which excludes astronomers.

Gary Heston дµÀ£º