Attaching Clutch Fan

[Innuendo]

It's very hard when you haven't got it front of you. Byron may be right the harmonic balancer might need to be pushed on further.
The top pulley your showing is the round edge and correct for the car.

You may need to lock the engine and pull the balancer on with the bolt. But make 100% sure the key is lined up and free of burs etc. I would remove it and inspect before you do anything else.
Lube it lightly as Byron stated.

[ambientgoat]

[MENTION=2]Blocker[/MENTION] just came and borrowed a square pulley for trail fit.
Given the parts manual gives different parts numbers for the water pump pulley, I'd have a guess that the square pulley is correct for power steer cars and the round is correct for those without. Rather than it being an early/late thing.

[HK1837]

Looking at it again that may be a 6cyl pump pulley. Early Holden V8 is much shorter from the face of the pulley to the groove. Here are some:

http://www.ebay.com.au/itm/holden-25...item27d0b098b3
http://www.ebay.com.au/itm/HOLDEN-25...item19d0a0428f
http://www.ebay.com.au/itm/HOLDEN-25...item19d60eab23

With the bigger bearing (longer) pump used later the pulley is longer. Here are some:

http://www.ebay.com.au/itm/HOLDEN-25...item1c26b46f7f
http://www.ebay.com.au/itm/HOLDEN-V8...item4170ac1980

I'd measure the "height" of your pulley and get someone to measure their V8 one. I won't be near one until Wed morning.

- - - Updated - - -

[MENTION=2]Blocker[/MENTION] just came and borrowed a square pulley for trail fit.
Given the parts manual gives different parts numbers for the water pump pulley, I'd have a guess that the square pulley is correct for power steer cars and the round is correct for those without. Rather than it being an early/late thing.

It is def early and late. The bigger bearing pumps were introduced late in 1978 or thereabouts, and this pushed the pulley face further out, meaning the pulley is "taller".

[ambientgoat]

It is def early and late. The bigger bearing pumps were introduced late in 1978 or thereabouts, and this pushed the pulley face further out, meaning the pulley is "taller".

Page 79 of your HJ parts manual.
Top right with normal fan looks a whole lot like the round nose one.
Bottom left with clutch fan looks a whole lot like the square edge one to me, note the shape of the pulley itself and the extra line at the base of the snout section showing the different detail.

I'm guessing that part 7435189 is the round edge
Part 2812459 will be the square edge.

Happy to be proven wrong. I'd be interested to know if the part numbers change when the long nose pump came in.

Blockers pulley was a v8 one, not a 6. We measured the diameter.

[Blocker]

Thanks to the Goatman, he called and loaned me his square water pulley and everything lines up now.

IMAG1702.jpg


IMAG1703.jpg
The distance from timing cover to balancer is identical to other engines so I am confident it has been attached properly.

IMAG1704.jpg

I may want to add a short extender so that B has a little more distance.

[HK1837]

You must have a later pump then Blocker, has to be with that pulley. Did it have 2 x gaskets at the back and a sandwich plate, with a barrel impeller?
If it is the longer pump trial fit it once the car is finished as it may have fan to shroud issues.

Goat, 74 part numbers are HK era, so maybe they used a wierdo pulley on some HJ? I'm certain mine has the round one and that is all i've ever seen on earlier red motors. I still reckon that rounded pulley can't be a 253/308 red one as those are shallower than the later square edged ones not deeper like Blocker found. Maybe the square edge one you loaned Blocker is one of the earlier ones from HK era and are the same depth as the normal rounded ones. It doesn't look as deep as it should, but may just be camera angles? Will be interesting to find out the answers. I'll measure some when I get home to satisfy my curiousity.

[ambientgoat]

Blocker just measured that square edge one for me at 40mm front to back. 308 with shortnose pump
Other 308 I has the long nose pump with a square edge pulley at 60mm.

Different people doing measurements, so I can't ensure we're measureing the same. But I'm guessing there are different length square and round pulleys.

Here is a photo of the motor the square pulley came off, now with round pulley and lining up with nothing.
photo.jpg

[Innuendo]

I just remember round the square as being early and late.
We used to do these on a chrome exchange basis. Clutch fans I always classed as late.

Anyway, if you have got the result that your happy with.

[HK1837]

I just measured a red HQ 253/308 one and it is 40mm front to back. So that square edged one also suits the same shorter pump, so as goat says it must be an A/C thing? Also HZ lists an air and no air pulley, the 7435189 pulley is the no air one (which is what i've got here, like 10 of them!) and 2812459 will be the 40mm square edged one for engines with air except for ADR27A engines with air which in HJ use 9942908. The 99 number disappears from HZ catalogue so there is just air (28 number) and no air (74 number). WB is the same as HZ for short water pump, and 2 x new 92 prefixed numbers for the long water pump, again air and no air. WB catalogue gives the pump lengths as 94mm and 110mm so the depth of the pulley in these will be 56mm.

Afterthought. I just checked the HX catalogue and it almost gives the game away. I reckon the round and square 40mm pulleys are different diameters, or the HJ 9942908 is a different diameter. The round one is 149mm across. This is what HX says:

7435189 - V8 no air.

2812459 - V8 auto engine with air with ADR27 (evaporative only ie canister etc as per HJ), V8 manual engine with air with ADR27A (evap and exhaust emissions ie normal HX) PLUS V8 with air cab chassis.

9942908 - 5.0L manual engine with air and with ADR27 except cab chassis (so again HJ style engine), V8 auto with air and with ADR27A except cab chassis.

So I reckon they are all different diameters, the A/C cars don't drive a fixed fan so the pump can be driven at a different speed, plus the 1-tonner involvement hints at this too as tonners generally have lower ratio diffs unless they were V8 with air then they had to have a 3.36. Just putting 2 and 2 together from this and hopefully getting 4, I think this means the 74 pulley is bigger than the 28 pulley. Not sure on the 99 pulley. Food for thought anyway!

The fact there are different numbes on WB for air and no air V8 also hints at a different diameter pulley. Blocker, I reckon that longer one you got is off a WB V8 (long pump) without A/C. The A/C one for the long pump will be the square edged long one.

[utevanwgn]

Could the diferent diameter wp pullies be because the aircon belt foules on the larger pully. This is a problem Ive had moor than once. Also I once did an engine swap where the car had power steer and the wp pully had to be changed because because you couldnt fit the ps belt between the wp pully and the harmonic.I dont know much about part numbers because books cant doo up nuts.
Cheers Nath.