Lynx II, hull # 4225

[Wayne Hingley]

I think if the pulley in the top of this photo was flipped around (so the cone-shaped portion is close to the engine), the belt would be more aligned with the crank pulley and generator.

[super dave]

I do not believe that the pulley can be reversed but I will see if I can get the part number off of the one I pictured on my next visit. Yes the carb can be mounted either way I did not know which way at the time I ran it up.

[Lynn Eades]

I don't have any answers, but the water pump looks fine.
The fault has to be in the area of the crank,crank pulley.
Rick, which crankshaft and block are listed in your parts book?

[Richard Coutts-Smith]

Peter, thanks for the ID on the map case. I have been using one for the last few years (for our bush trips) and always wondered what/how the brackets fitted.
See quite a few of these around over here, all in unused NOS condition. Remarkable for a bit of kit that age (C.G. Hartley & Co. 1944), any idea what the fancy hook on the top strap is for?
Rich.

[Mike Cecil]

The fancy brass hook on the Australian version has a swivel base, and is for hanging the case from the belt when dismounted, leaving the hands free to work the map, chinagraph pencils, etc.

The Lynx was not the only vehicle to be quipped with the mounting points for that particular design of map case: The Australian Cruiser tanks were also so equipped (underside of turret roof in easy reach of the CC) and I seem to remember that some other Aust AFVs were similarly equipped, but I'd have to go searching for the exact references. Is it a British design that also equipped British AFVs? Perhaps our MLU Brit armour enthusiasts can enlighten us, please.

Most of those map cases I've seen available through disposal stores in Australia had the hook removed by cutting the strap. I remember having to search quite a few before I found a couple that were still intact.

Mike

[Richard Coutts-Smith]

Thanks Mike, I thought it looked like a belt hook, but also thought it was too impractical for that, always nice to have these niggly little questions answered. Sounds like the contract for the map cases way exceeded the amount of vehicles needing them.
Rich.

[lynx42]

Originally Posted by Lynn Eades

I don't have any answers, but the water pump looks fine.
The fault has to be in the area of the crank,crank pulley.
Rick, which crankshaft and block are listed in your parts book?

Hi Lynn, Probably not much help but the numbers are straight out of the book and don't mean much to me.

Block .. .. .C29SR 6010 S.
Crankshaft .. . . C99A 6303.

The water pumps on mine are single belt not double like Peters.

Crankshaft Pully.. .6312.

Water Pump Nos... .... RHS. 8503
Water Pump Nos... . LHS. 8504

Water Pump Pully. ... 8509

Regards Rick.

[Andrew Rowe]

The block that Peter has appears to be a 1946 model from my information that I have. If I read the numbers right ; C59A block is 1946 , stating that the crankshaft is long and high pressure oil pump used. Model C59T is a 1946 , same as above but uses high torque cam and heavy duty exhaust valves. These configurations are what came from the factory originally, but you can build most of these flatheads up from many assorted parts, and most are interchangable. The crankshaft used in the C59A and C59T blocks is a 99A-6303 , using high pressure oil pump ( 65-70 lbs ) There are about 6 types of crankshafts used in the common types of flatheads, but I thought they were all bascially the same length.

[Lynn Eades]

Rick it worked like this (back in the day) I hope this helps. If you already know, It may help someone else.
Henry Ford had a number for each basic item.
For example;
A block is a 6010 this covers all blocks cars trucks tractors, 4,6, and 8 cyl etc.incl. America, Canada , England etc.

To get down to a particular defined model, you take the number that you have located on the exploded engine picture and you now hunt for it in the written section. There you will find that basic number (6010) but it will have various prefixes and maybe, suffixes with that number.
For example: (Andrew's supplied number) C99A-6010
The Ford of Canada 1941 to 1947 parts book(post war?) only supplies a C59A 6010 S block as a service part.
The 48 to 51 truck parts book lists a C69A-6010-S for the 48 engines (last with center water outlets) while my parts book for the war time CMP rear engined chassis (3 models) list a C19A-6010 S block.

So if you follow that you will now understand that Crankshaft pulley 6312 without the prefix, refers equally to an English built 4 cylinder Consul engine pulley.

Rick, you have mentioned the single sheave water pumps. Is this what is needed to fix this alignment problem? Is the belt centerline different from the two C.L's on the double sheave pumps
This book covers the CO11QR, C191QR, and C291QR. All these engines use single sheave water pumps. Does the Lynx use the same build motor?

[Mike Cecil]

Following on from Lynn's post, the basic c/shaft pulley number is, as he and Rick said, '6312' which is applicable to any c/shaft pulley - GP-6312 is for the Ford GP, GPW-6312 is for the jeep, 81T-6312, 91A-6312 and 21A-6312 for various configurations of V8. The Lynx workshop manual diagrams just provide the basic item number, not the essential prefix: you would need a Lynx parts list for that.

Peter, I note the manual shows a single belt pulley configuration for the Lynx Mk3 and 3*, rather than the twin belt pulley configuration common on CMP trucks. So I'm surmising that you have gathered the various parts from other places, ie not originally taken off your Lynx during restoration. (I have not followed your forum posts closely: you may have explained that previously).

I'm suggesting, with the variety of (1) water pump pulleys (2) generator front plates (3) generator pulleys and (4) crankshaft pulleys that were available for V8s in various applications, that that may be the source of your misalignment - a mix of items from different applications. The 1941 master parts list shows that there were 13 different generator pulleys, either twin or single pulley, produced between 1928 and 1940, varying in size from 3.58 inch diameter to 5.18 inch diameter, and seven different generator front plates, which, combined, gave 20 different combinations of generators. The same applies to crankshafts, crankshaft pulleys and so on: there are multiples listed up to end 1941, so the number probably only increased after that.

To overcome the problem, a set of matching items would need to be located. Easy to say, of course, but an intact 'junker' V8 may provide you with such a matching set.

Mike