Folks, I'm building a power board and a control board for an obsolete inverter. The inverter has an input of 24V and an output of 120VAC. It's a very popular inverter which has a long history of use in the Motorhome industry. It is not grid tie. The oldest of these inverters is exceeding 25...
This is a connection to a tow bar for towing a car behind a motorhome. I don't have any additional pics. Here's the bar: Link. This is all the information I have. How would you say the forces contributing to this failure occurred: Axially, vertically, or laterally (hard turn left or right), etc...
I have a bus with an Allison 4060HD transmission equipped with an integral hydraulic retarder. I have a switch on the dash to enable the retarder. I also have a six position modulation control stalk to select the amount of deceleration. If the modulation lever is set to off but the dash switch...
Folks,
I've never seen the style of main bearing cap assemblies that Kubota uses. It's clear that they end up with a very stiff block. Below is a photo album of the bottom end plus some snippets from the engine service manual showing the assemblies. I'm interested in the tolerance of the...
I wonder if someone can explain the attached suspension geometry to me. It's on my motorhome which is essentially a 3 axle bus. The attached drawings show the rear suspension which has a single hanger that supports both the drive and tag axles. The drive axle has 4 air springs, the tag axle 2...
Folks,
I have a bus that uses an IFS steer axle provided by one of the major drivetrain tier suppliers. I'd rather not name the company since I am trying to convince them to support the product. I thought I'd solicit the opinion of this board. The axle is 16000 lb GAWR, it uses unequal length...
Folks,
I'd really appreciate some metallurgy input on the fastener pictured below. It's a Rolok self threading fastener. The application is a bus basement bulkhead. The bulkhead is at the rear of the basement and is made up of 1.5"x1.5"x0.125" thin wall box tubing and 14 gauge sheet steel. At...
I've been told by Cummins technical folks, including engineering, that an independent engine builder, such as myself, could never install the cylinder head as well as the factory. They said that no matter how skilled the builder, the installation will never be as good as factory. After many...
What can you guys tell me about the failure mode of this head gasket. It's from a Cummins 8.9L 6 cylinder diesel, ISL. The number 6 cylinder developed a breach of the firing ring near the outer two head bolts. We've seeing a pattern of these failures. I don't know if it's a head gasket issue, or...
