New Game CMP Brain Teaser Trivia

[Phil Waterman]

Hi Guys

Now for the difference in Reverse

Reverse Trans 012.jpg Reverse Trans 014.jpg Reverse Trans 013.jpg

As you can see in the middle picture above there is about an inch more clearance in side the box with transmission in reverse.

As the plug is located in a position almost impossible to actually look in on the truck, I remove the plug an insert a finger (clean of course) and crock the first joint to check the level.

Now for curiosity here is the top cover with all the forks set for Neutral I have a copy of this picture and one looking down into the transmission with all the gears in the neutral position as reference in the shop.

HUP Neutal Top Trans.jpg

The last picture is transmission tick tac toe for where are the different forks positioned for what gear.

Shift Fork Possition1.jpg

Note of explanation: The reason for all the grease on the gears, this is my spare transmission that have repaired after breaking a tooth. As this one is in storage want to really protect it from rust so I coated everything inside in a heavy layer of grease. Then sealed all the opening as much as possible.

Story of breaking the tooth http://www.mapleleafup.net/forums/sh...ighlight=tooth


Now for you Ford guys is there one gear better than another for checking the lube?

To sum up

What gear should you put a Chevy CMP to check the lube level in the transmission?

Answer

Reverse as this moves the gear closest to the lube fill plug away by an inch. Allowing for easier checking and easier adding of lube if needed.

Side point don't over fill it just makes them leak more.

Cheers Phil

[Richard Farrant]

Well Phil,
I know the box is virtually identical to that used on the WW2 Bedford trucks, but had forgotten how Chev put the level plug at the back. The British arm of GM had the level plug in the side so none of these dramas.

Bedford also redesigned the Chev 216 into the Bedford 28hp, which had full pressure lubrication to mains and big ends along with replaceable shell bearings ...... oh and no fibre cam gear either. All this before the first Chev CMP's went into production too!

[Tony Wheeler]

Originally Posted by Phil Waterman

Now for you Ford guys is there one gear better than another for checking the lube?

No such issues Phil, the filler plug is on the side of the box, well clear of the gears. It's also angled downwards about 45 degrees, so your finger could reach down further to check the level. All very considerate of Ford, unlike the dizzy!

Interesting to compare the two gearboxes, I've never looked inside a Chev box. The Ford one seen here is in 3rd gear. Reverse idler and selector fork can be seen top left. It's on a half length shaft, unlike the full length Chev one. As you can see Phil I couldn't quite match your maintenance standards!

TONY6313 - Copy - Copy.jpg

[Mike Cecil]

Keith,

You are being mischievous! Fancy dropping such an 'isolated' question on the poor overseas CMP-ers!

Common guys, I'm out of the running, but Grant's answer A is getting close to the money. More info needed: look at some pictures of Aussie trucks (sorry, Lorries)

I could ask a question or two of CMP owners in Australia: what's the difference between the lower back of Canadian Ford Cab 13 and the one found on Ford CMPs assembled in Australia, and why?

And while on the subject of cab backs, what's the difference in the fastenings of the roof to cab back on Ford Australia assembled cabs, than those assembled by Ford in Canada??? (and why??)

Keith already knows, so he's out already.....

Mike C

[Lynn Eades]

Just for the record, many parts in that Ford box are interchangeable with the Dodge 4 speed built under the "New Process" brand.

[Tony Wheeler]

Yes I often check ebay USA for that reason Lynn. I'd like to build a complete NOS gearbox if possible, just to see how quiet/noisy they were brand new. Expensive exercise though.

I was very disappointed to find this gearbox full of rust as it's an extremely low mileage blitz.

[Mike Cecil]

Keith,

No, not unfair at all: it made me smile when I read it, as was a good question.

Your supplementary - another good one- will require some thinking on the part of our overseas friends.

Mike C