rhasler

I thought maybe I was being overly sensitive, but I guess not because it looks like Rob is on the same page as me. I read these posts the last few days and couldn't figure out why anyone would post such nonsense laden drivel.

Sorry to tell you Rob, but he's a "Truck Engineer". See his introduction post: http://www.bigmacktrucks.com/index.php?showtopic=14898&pid=59915&st=0entry59915

The DOT won't like it if they find out you don't have enough air reservoir capacity either. Post your VIN or PM and I'll see if I can find an aluminum tank of the same dimensions. They did have aluminum air tanks for RD chassis, but I would expect to pay more for aluminum than for steel (if buying new).

JerryB had a similar problem with his CX613. Your dash cluster is similar to his, but I think will have a different part number. See this post: http://www.bigmacktrucks.com/index.php?showtopic=14797&st=0&p=59442&fromsearch=1entry59442

The VIN they listed is for an RD822SX.

Let us know what you find out.

Did they teach you how to build a death ray with all those fancy batteries yet?

Do any of you guys know if the durability of the engines in the equipment is better than the truck engines?

The RB didn't have an electronic dash so even the factory installed guages were mechanical. You just need to remove one of the 1/8" pipe plugs from the intake manifold and install a 1/4" ferrule x 1/8" NPT fitting in the manifold, attach a length of 1/4" nylon air tubing, route it into the cab along side the oil pressure line, and hook it up to a new boost guage. This would help a lot in troubleshooting low power problems.

No to both questions. The Cab floor board has a section that is bolted in that is removable. You need to remove the floor mat, guards, throttle pedal (fold the pedal back toward the seat and remove the two bolts holding it down, be careful reinstalling as the bracket is aluminum and the bolt threads easily strip out). After removing the floor board bolts the plate has to be lifted and turned slightly to get the clearance needed to remove it from the cab. It takes some practice but isn't too hard. The pipe will not show bubbles with the engine running if there is a hole in it because the engine and compressor will both be pulling air in through the hole.

There will be two air bags (item 45 in the attachment) in the center of the rear cab mount brace (item 69 in the attachment). The front cab mounts are a split rubber design with a clamp plate on the bottom (items 33 and 75 in the attachment). You definitely have air ride on your cab. Make sure to check the cab shocks too. 2003 RB688S Cab Mounting.pdf

I got it. You have an E-Tech CCRS engine (as opposed to an ASET AI engine). You can disregard the earkier remark about the intake manifold and elbow as thid was not used until the ASET AI engines were introduced. Another possible leak point in the boost system is in the air inlet for the air compressor. It is a metal tube that comes off of the rear of the intake manifold and wraps around the rear of the engine. These tubes sometimes develop a hole. It is really hard to get at on your chassis. The floor board has to be removed and usually several curses have to be uttered at high decibel levels before it can be removed, so check the easy to get at stuff first. I see now that you have a post related to the cab air ride. A sagging cab will cause the cab to push into the tube and rub a hole in it so you may need to check it anyway. This was also a common occurence in our area with the mechanical engines. The cab would actually bend and restrict the throttle linkage at the rear of the cab. Do you have a pyrometer or a boost pressure guage installed on the truck?

Yes. It should be on the metal tag on the driver's door. If that tag is missing it should also be stamped on the right frame rail somewhere around the area of the shock absorber.

Give me your trucks serial number and I'll check some things out for you. Probably the easiest (and cheapest) thing you could do is give the engine a good visual inspection. Look over the exhaust manifold and turbo closely for signs of exhaust leakage and cracks (particularly at the center manifold section towards the cylinder head and at the turbo mounting flange). Make sure you dont have any loose charge air cooler hoses, and check the intake manifold elbow. The original clamp holding the elbow to the manifold was a worm type clamp that would loosen in service causing the elbow to wear against the manifold resulting in loss of boost pressure.

That's what I had always heard about them. I wasn't sure of the cost on their equipment though. It seems like the majority of the equipment used around here on local projects is Volvo.

I'm suprised no one replied to this yet. Try contacting the Mack Trucks Historical Museum with your information. Contact information as follows (I think this is still current): The Mack Trucks Historical Museum Don Schumaker, Curator 997 Postal Road Allentown, PA 18103 Telephone: 610-266-6767 Fax: 610-266-6823

Have any of you guys owned or operated any Volvo Construction Equipment?

Hot here again today. Took out some steaks for dinner Was all ready to cook them on the grill Decided it was too hot to cook on the grill, but I remembered hearing about a guy walking barefoot on the pavement with this result So I decided to throw the steaks on the pavement and see if they would cook. I think they were out there a little too long

I know there are right hand drive autos here. I don't know that a truck would be any different in that respect. Weight and length limits would probably be the biggest problems. Maybe emissions too, if the engine is set to Australian emissions levels. It would be really neat to see it though because apparently there aren't (m)any here.

Man you are too much Rob.

Hi Grant. Sorry, I meant will you be working it or what exactly?

Randy, for some reason it looked to me like you have a handlebar mustache in this picture (until I clicked on it to make it bigger). Might be a good look for you, so keep that in mind if you need to change the facial follicles in the future. One of my neighbors has an old dozer sitting behind the house, one of these days I'll see if I can find out what it is. Seems like it's been sitting for years

If you decide to go to the pool again today take a speedo and see if you get a better reaction. FYI-Don't take any Baby Ruth's with you, that would be almost the same as yelling "FIRE" in a packed movie theater.

What will you be bringing it over for?

Check the terminals in the connector on the harness and the wiring too. I've replaced quite a few of the connectors and terminals lately because they weren't making contact properly.