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Forum: Diesel Engine and Drivetrain 03-24-2011, 07:45 PM
Replies: 20
Views: 23,171
Posted By heavyequipment
The volvos I'm familiar with (most all through...

The volvos I'm familiar with (most all through '88) have a buffer circuit in the instrument panel that keeps the temp gauge from actually following the temperature as long as it's in the normal...
Forum: Diesel Engine and Drivetrain 03-24-2011, 07:29 PM
Replies: 15
Views: 18,189
Posted By heavyequipment
There is a listserv (emailing list) dedicated to...

There is a listserv (emailing list) dedicated to d24's and d24t's. Write to it at <d24@elist.tufts.edu> to post your question on the list. Some of the members have experience repairing ZF...
Forum: Diesel Engine and Drivetrain 03-24-2011, 07:16 PM
Replies: 11
Views: 12,776
Posted By heavyequipment
Yes, the rod is free to rotate as the engine...

Yes, the rod is free to rotate as the engine runs. As for orientation, the same end should always be against the camshaft, to save wear on the cam lobe. As the engine turns, the cam pushes the rod...
Forum: Diesel Engine and Drivetrain 12-28-2010, 04:58 PM
Replies: 3
Views: 7,334
Posted By heavyequipment
Looking at mine, it seems that the big hose...

Looking at mine, it seems that the big hose supplies boost pressure to the actuator, while the small one vents it, supplying a reference to the other side of the diaphragm that equals the pressure at...
Forum: Diesel Engine and Drivetrain 12-28-2010, 04:54 PM
Replies: 20
Views: 23,171
Posted By heavyequipment
I use an infrared thermometer for checking temps...

I use an infrared thermometer for checking temps in different parts of the engine. They're not hard to find these days. This engine is the only one I've ever seen that circulates the coolant...
Forum: Diesel Engine and Drivetrain 12-28-2010, 04:40 PM
Replies: 1
Views: 5,946
Posted By heavyequipment
Heater hose connection at the thermostat housing

While I'm waiting for parts and tools to repair my head, I'm changing all the coolant hoses to the silicone rubber type - heat and oil resistant and last pretty much forever. I'm looking at the...
Forum: Help! My car died! 12-17-2010, 07:14 PM
Replies: 2
Views: 8,597
Posted By heavyequipment
Take a close look at the belt that drives the...

Take a close look at the belt that drives the injection pump. Mine looked OK at first, and even turned the fuel pump, but when I looked a little closer, it was missing a bunch of teeth. Even though...
Forum: Diesel Engine and Drivetrain 12-13-2010, 11:43 AM
Replies: 4
Views: 6,880
Posted By heavyequipment
My piston height indicator is a piece of...

My piston height indicator is a piece of keystock, 1" X 1-/2" by about 8" long. I drilled a hole in one end and tapped it for a 5/16" capscrew that I cut the head off. I mount a dial indicator on...
Forum: Performance and aftermarket 12-13-2010, 09:33 AM
Replies: 9
Views: 10,807
Posted By heavyequipment
Ethanol is drinkable, but not with 15% gasoline! ...

Ethanol is drinkable, but not with 15% gasoline! It might have more energy/weight than methanol, and is not as likely to damage rubber or plastic parts.

You can use distilled water from a...
Forum: Performance and aftermarket 12-12-2010, 07:56 AM
Replies: 9
Views: 10,807
Posted By heavyequipment
Not methanol...

E85 is 15% gasoline and 85% ethanol, not methanol. I don't know how much difference that would make to your system. I don't think a little gasoline will hurt anything. Gasoline has less energy per...
Forum: Diesel Engine and Drivetrain 07-26-2009, 08:37 PM
Replies: 5
Views: 13,085
Posted By heavyequipment
Could be a bad connection at the shutdown...

Could be a bad connection at the shutdown solenoid or in that circuit. Hard to find a cause while it's running! Hook up a (small) light to the shutdown solenoid and put the light where you can see...
Forum: Diesel Engine and Drivetrain 07-13-2009, 03:33 PM
Replies: 35
Views: 43,846
Posted By heavyequipment
Probably not the fan clutch. That problem shows...

Probably not the fan clutch. That problem shows up worse at low speeds/stuck in traffic. My vote is for a clogged radiator, internally or externally.

Could also be exhaust restriction. The...
Forum: Suspension and Brakes 07-13-2009, 03:18 PM
Replies: 23
Views: 35,879
Posted By heavyequipment
[QUOTE=Heating the coils will weaken the springs...

[QUOTE=Heating the coils will weaken the springs a be to soft.]

Heating the coils only weakens them while they are hot enough to sag. After cooling, they will have their original stiffness, or...
Forum: Diesel Engine and Drivetrain 07-05-2009, 08:15 PM
Replies: 3
Views: 9,858
Posted By heavyequipment
The glow plug relay unit has a timer in it. On...

The glow plug relay unit has a timer in it. On some models it has a temperature sensor (separate) that only lets the relay turn on below a certain temperature. To test the system, make an indicator...
Forum: Diesel Engine and Drivetrain 06-30-2009, 01:39 PM
Replies: 34
Views: 42,628
Posted By heavyequipment
"getting explosions from the intake" sounds like...

"getting explosions from the intake" sounds like a possible timing belt problem, or burnt, bent, or maladjusted valves. I wouldn't crank it anymore before checking valve timing. Bent valves, broken...
Forum: Diesel Engine and Drivetrain 06-27-2009, 05:13 PM
Replies: 34
Views: 42,628
Posted By heavyequipment
You haven't mentioned how this all started... ...

You haven't mentioned how this all started...

It would be pretty rare for the timing to change significantly without some obvious reason; loose sprockets, loose mounts, damaged belt...

More...
Forum: Suspension and Brakes 06-26-2009, 06:44 PM
Replies: 23
Views: 35,879
Posted By heavyequipment
Don't cut..

It's better to heat a short length of the coil until it sags. If you cut the spring you make it stiffer. When the spring is compressed, as by a bump in the road, the wire twists and then springs...
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