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  #181  
Old 06-02-21, 03:50
Colin Alford Colin Alford is offline
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Power Tire Pump

The conclusions drawn above regarding the Power Tire Pump may be incorrect.

We know that the cabs were different between 1533X2 and 1543X2, but these two different MCP cabs were more similar to each other than they were to a CMP cab.

The description in Driver’s Handbook CC60L-HB1 includes “...is controlled by a lever located on the running board valance to the rear of the front mudguard...the dust cap located to the rear of the control lever...disengage the clutch and pull out on the lever” (see first two images for complete text).

The comparable description in Driver’s Handbook C60L-HB1 (a normal CMP) includes “... is controlled from within the cab...the dust cap from the hose connection at the left frame side rail...insert a screwdriver...turn the shaft counter-clockwise to engage the gears.” (See last two images for complete text and image).

Are there any clearer images of the left running board valance on 1533X2 where we might be able to make out the control lever (knob)?

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  #182  
Old 06-02-21, 04:23
Colin Alford Colin Alford is offline
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Like many of the Chev Parts Lists, CC60L-01 uses mostly generic diagrams which do not give an accurate visual representation of the specific parts for the vehicle.

The Driver’s Handbook series are well illustrated.

Again, acknowledging that only some images from CC60L-HB1 may give a reasonable representation regarding 1533X2, here are some images that may be beneficial.

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  #183  
Old 06-02-21, 04:26
Colin Alford Colin Alford is offline
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Here are a few more images from CC60L-HB1 that might be useful, and the last of my “blast of info” for tonight.

Regards,
Colin

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  #184  
Old 06-02-21, 06:13
Colin Alford Colin Alford is offline
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I have re-read the entire thread and note that the info on page 37 of Volume V of the Design Record has not been included.

I note the discrepancy between the 133” wheelbase that has been quoted a number of times and the Design Record entry of 134 1/2”.

I have also included an image of “Maximum Vehicle Speeds” from CC60L-HB1, as the question of speed has come up in relation to two-speed rear axles.

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  #185  
Old 06-02-21, 09:58
Charlie Down Charlie Down is offline
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Hi Colin
This is great, thank you for sharing this information.
Reference the PTO air pump controls, I have over 300 photos of 1533x2 trucks in LRDG service and I can confirm that I have yet to see a control lever by the air hose connector. All evidence points towards the control lever being in the floor, activated by a screw driver.

Great scan of the waterfall grill, is there any more information and/or diagrams of this area. I'm interested in the bumper brackets and support rods details.

Actually I'm interested in as much information as possible as the 1542/1543 parts books seem to be the only useable references specific for the 1533.

Your 1542/1543 parts books area little goldmine of information!
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  #186  
Old 06-02-21, 11:06
David Herbert David Herbert is offline
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I note that in post #184 in the 'Description of body' it states that "STANDARD tool boxes are provided", which I take to mean that these are to some extent universal, which would fit in with the suggestion that they are the same as used on CMP C60L trucks made in an earlier post.

David
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  #187  
Old 06-02-21, 17:01
Bob Carriere Bob Carriere is offline
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Default Tony......

..... I could not find the ratio...it's just not there..... it shows the whole rear end as an assembly but no ratio given........ will dig deeper tonight.....
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  #188  
Old 06-02-21, 20:52
Paul Singleton Paul Singleton is offline
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Default Axle ratio

Quote:
Originally Posted by Bob Carriere View Post
..... I could not find the ratio...it's just not there..... it shows the whole rear end as an assembly but no ratio given........ will dig deeper tonight.....
Bob, does this help?
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  #189  
Old 07-02-21, 19:58
Bob Carriere Bob Carriere is offline
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Default Very nice......

Thanks Paul

Does the book give any details as to the difference between the 9600 and 9600H series.......... The H being used by the HD MapleLeaf truck....

Book sure looks clean....don't you ever read it????

I scored a NOS 5.43 ring and pinion for the torque tube 1940 1 ton Chev I have...

Cheers
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  #190  
Old 07-02-21, 21:02
Paul Singleton Paul Singleton is offline
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Default 9600h

Here it is Bob.
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  #191  
Old 07-02-21, 21:14
Bob Carriere Bob Carriere is offline
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Default So similar but different.....

So the GMC.... the real GMC with GMC engines (228 and 248) had a model H similar to but different than the BIG Maple LeaF..... anything to keep the dealers happy!!!!!

Cheers
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  #192  
Old 07-02-21, 22:41
Bob Carriere Bob Carriere is offline
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Default Ayeyh Caramba......

I feel like we have beencovering the definition of "sunshine"........

The more you dig/read/find the more you confused you are like a google search find...

so the heading of this thread should be possibly/matbe/perhaps a "30424" which is there plain as sunshine in one publication but not listed in the major assembly book. Glad no one is taking offence at the various new info coming up.

So the question begs to be asked.....are all LRDG 2 speed axles......??? how do we tell them apart...... do we have an inside cab picture that shows an adadded lever on the tranny gear shift lever???

....and now I know where I canfind a 2 speed rear axle....... if the yeard has not rolled everything for crap.... Grant nugg nugg wink wink do you remember????..... I still have a piece of rusted flaked black paint under my RH knuckle.... if only the snow can melt....

Need to hunt for more 42 Chev, GM, GMC, Maple Leaf good sheet metal....

Now that everyone has their best bible open can you cross check somo thing for me........ Shock absorbers........

The CMP early models had small double action Delco..... same used on early 4x4 Dodge trucks.... the VC and WC series I beleive..... Now we know that shock absorbers on the rear axle was an option on civilian models....and civilain models tended to have single action shock absobers in front.

All CMP rear axle have the larger shcokabsorber and eventually all cab 13 had the larger shocks onthefront as well.

What was installed on the larger Chev and GMC........ I have a Chev (41/42?) rolling chassis that sports the small CMP shock absorbers and the infamous flat 1/4 in. steel plate frame reinforcement...... but no other identifying marks....... could that frame be X military???? it has the large ball bearing on the front axle........ what goes on a 304123.....

Cheers
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  #193  
Old 07-02-21, 23:16
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Tony Smith Tony Smith is offline
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Quote:
Originally Posted by Bob Carriere View Post
I feel like we have been covering the definition of "sunshine"........

So the question begs to be asked.....are all LRDG 2 speed axles......??? how do we tell them apart...... do we have an inside cab picture that shows an added lever on the tranny gear shift lever???

Cheers
"Sunshine" is a difficult concept to explain to Canadians, many have never seen it!

The pic of the 1533X2 cab shows the 2 speed differential lever.
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  #194  
Old 07-02-21, 23:30
Bob Carriere Bob Carriere is offline
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Default ..but is that a 30424

...... that's the lever...and in the right location.....

Need to get myself more parts vehicles....... one "wrocksul" coming up.... and maybe a frame mounted Spicer for 4 extra gears........

slowwwwwwww speed would be nice in a parade....... you release the clutch in low low low gear on Monday afternoon and start rolling by supper time.

Thanks Tony.
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  #195  
Old 08-02-21, 02:58
Paul Singleton Paul Singleton is offline
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Default 224 GMC engine

Quote:
Originally Posted by Bob Carriere View Post
So the GMC.... the real GMC with GMC engines (228 and 248) had a model H similar to but different than the BIG Maple LeaF..... anything to keep the dealers happy!!!!!

Cheers
Yes, the 9600H used a GMC 248. The smaller GMC trucks in Canada used a 224 inline six. The 224 was a 216 bored 1/16” to give the larger displacement so the GMC would have a different engine than the equivalent Chevrolet.
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  #196  
Old 08-02-21, 03:12
Bob Carriere Bob Carriere is offline
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Default ...and the 224 bolts right in a C15a

The PO of my C15a had a rebuilt 224 that bolted right up to the CMP bell housing.

So Paul in your GMC manuals any pictures of the double action shock absorbers as seen on CMP????

Cheers
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  #197  
Old 08-02-21, 03:25
Paul Singleton Paul Singleton is offline
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Default Shock absorbers

Hi Bob, my manual doesn’t have pictures of the shock absorbers on the vehicle but does have a section on overhauling the double acting shocks.
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  #198  
Old 08-02-21, 04:14
Bob Carriere Bob Carriere is offline
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Default Hmmmmmm....

I have never been able to take one apart with out destroying it. Heat to loosen up the lever usually kills the oil seal at the very least.

Mind you over the years, I have found that if they move and are refilled wiht oil they are good enough for a CMP...... drove mine for a while across the backfield without them and noticed no difference when I installed them.

do you have any tricks to dismantle a totally salt pickled shock absorber?Some guy (Hemmings) in the US rebuilds them with a $150 core charge + time + parts.
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  #199  
Old 08-02-21, 14:25
Paul Singleton Paul Singleton is offline
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Default GMC engines

Quote:
Originally Posted by Bob Carriere View Post
The PO of my C15a had a rebuilt 224 that bolted right up to the CMP bell housing.

So Paul in your GMC manuals any pictures of the double action shock absorbers as seen on CMP????

Cheers
Hi Bob, there may be some confusion about Canadian GMC engines. The U.S. GMC trucks used the 228, 248, 270 series GMC built engines. The Canadian trucks used a bored out 216 that displaced 224 cubic inches, only the heavy duty trucks used the GMC engines.
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  #200  
Old 20-02-21, 07:02
Charlie Down Charlie Down is offline
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Default 1533X2 Bumper profiles

Quote:
Originally Posted by Andrew H. View Post
Charlie, by "radiused curve" do you mean curved throughout? If so, that cannot be right, as the wartime photos show the 1533X2 bumpers to be straight, with a angled bends at each end.
Hi Andrew,
For years I thought that they only fitted curved bumpers, then as I got more involved in the research I kept hearing about angular bumpers. I checked my photographs and I'm confident that both were fitted. Its hard to get the right angles, and most photographs look like one version or the other, but its not always 100% clear. However the attached clearly shows a curved bumper and an angular bumper fitted to LRDG 1533x2 trucks. Both seem common and as its hard to distinguish which type it is in each photo its hard to say which one was most frequently fitted.
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  #201  
Old 20-02-21, 21:00
Andrew H. Andrew H. is offline
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OK I stand corrected. However I have to say that I have never before seen one with a curved bumper.
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  #202  
Old 20-02-21, 21:05
David Dunlop David Dunlop is offline
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Charlie.

In that left photo with the curved bumper, is the brush guard tube directly above it also curved to match the bumper, or is that just the shadows playing tricks on my eyes?

David
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  #203  
Old 20-02-21, 23:10
David Herbert David Herbert is offline
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I think that both those trucks have curved brush guard tubes but possibly the one with the curved bumper is more curved.

David
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  #204  
Old 20-02-21, 23:30
Charlie Down Charlie Down is offline
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I think that the top tubes of the bush guard are both curved, even though the angular bumper version has the bush bar mounted on the central straight section of the bumper. I've checked my references and it looks like the vast majority that I can see from the right angle to discern their shape are curved. There's a couple that look straight, but could just be the angle. Some have rotated so the curve is in the vertical plain, not horizontal. Also found a couple that have no bush guard fitted at all, which I haven't noticed before. I've learnt the hard way with these trucks not to draw definite conclusions, so I'm comfortable to say that the vast majority are curved and there could be some that are straight!
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  #205  
Old 20-02-21, 23:43
David Dunlop David Dunlop is offline
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Maybe the curve was introduced so that when you crested a dune at speed and encountered a camel, it would be deflected to either side, rather than coming straight up over the bonnet and into the back of the truck.

David
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  #206  
Old 21-02-21, 00:41
Charlie Down Charlie Down is offline
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The first photo shows a Y Patrol truck without a bush guard and the 2nd photo shows the bush guard top tube rotated, showing the curve in the tube. Interestingly all the rotated tubes show the curve going up not down. I have no idea if that is significant.
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  #207  
Old 24-02-21, 17:00
Charlie Down Charlie Down is offline
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Default Bumper Brackets for 1533X2

Dave Ashby has very kindly photographed and measured the bumper brackets on his 1542 truck which are the same on the 1533X2. He has asked me to post them for him. There are 6 photos and 1 drawing with dimensions attached here and on the post below. Note on photo 4 and 5 there is a smaller near vertical rod that attaches to and supports the bottom of the grill.

Thank you Dave for providing the photographs.

Colin Alford, I'd be really interested to see if there is anything on these brackets in your manuals, and also anything about the steering gear for the 1533X2 and 1542/3 trucks in your Major Assemblies Catalogue. The last pieces of information needed for a complete overview of the iconic LRDG 1533X2 truck.

Charlie
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BB1.jpg   BB2.jpg   BB3.jpg   BB4.jpg   BB5.jpg  

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  #208  
Old 24-02-21, 17:02
Charlie Down Charlie Down is offline
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Default Bumper Brackets part 2

Last photo and dimensions.
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BB6.jpg   BB7.jpg  
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  #209  
Old 05-03-21, 20:47
Colin Alford Colin Alford is offline
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Please see these extreme close-ups of the transmission-driven tire pump control lever and hose connection point on the left running board of the 1543X2 and the 1533X2.
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  #210  
Old 06-03-21, 12:28
Charlie Down Charlie Down is offline
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Default PTO Air compressor details

Colin,
That's fantastic!
Never thought I'd see this in such detail. This looks like there was no hole in the cab floor to activate/control the PTO pump, just this simple pullout lever to engage it. Or maybe both?
The question remains for me, what other details have you got of this series of trucks.
I posted photos of the 1542/3 bumper brackets kindly provided by Dave Ashby, which shows a modified grill where the bumper brackets come out the front panel. The modification gives a larger opening for the military style bumper I presume. Really keen to see any details of this if you have them. I've checked my LRDG 1533X2 photo's but can't see whether this detail is on the trucks, its just an area that was hidden by the bumper or stowage. Any help massively appreciated.
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