Daves86
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Need pictures...Installed a backup light on the M998, with the pressure switch added to the gear shift selector...and it works!!!
Also adjusted the handbrake and it now holds it still.... WOOHOO.
Simple fix. Make sure you send your wife on errands every day so the rig does not sit. Keeping her busy will make your life easier and your rig will not need fixing.Wife's truck has had the very, very occasional "episode" where the fan doesn't engage. It seems to happen if the truck sits for a few weeks without being driven. If I unplug the TDM, the fan engages so that rules out the control (cadillac?) valve.
Over the last few days, the problem is finally more consistent so I'll try the troubleshooting procedure in the TM and try to determine if it's the thermostatic switch or the TDM.
Google and SS are your friends.Grrrr....
There are 2 thermostatic switches called out in the parts manual-
One is screwed into the piping near the front of the engine and the other is screwed into the side of the passenger's side cylinder head. It seems to me that they both operate on the temperature of the coolant.
Which one of these controls the engine fan operation? What does the other thermostatic switch control?
I'm looking at the 24P-1, Section II, Figure 66.
Edit- Nevermind, I figured it out by looking at some of the vendor websites. The one in the cylinder head is the "advance" (for fuel delivery?) and the one in the crossover piping is the fan switch.
Whats the part number for the fan thermostatic switch? Thanks. Think mine isn't working.Grrrr....
There are 2 thermostatic switches called out in the parts manual-
One is screwed into the piping near the front of the engine and the other is screwed into the side of the passenger's side cylinder head. It seems to me that they both operate on the temperature of the coolant.
Which one of these controls the engine fan operation? What does the other thermostatic switch control?
I'm looking at the 24P-1, Section II, Figure 66.
Edit- Nevermind, I figured it out by looking at some of the vendor websites. The one in the cylinder head is the "advance" (for fuel delivery?) and the one in the crossover piping is the fan switch.
Whats the part number for the fan thermostatic switch? Thanks. Think mine isn't working.
Many to chose from. My personal choice. Skimp on quality, pick up some headache pills too, CAMO![]()
Thermostatic Switch (Engine Fan) For HMMWV, 12338599
Thermostatic switch for engine fan control on all versions of the HMMWV (all 6.2L and 6.5L engines). P/N 12338599, also replaces 9705400, 5594181, AD105-503. NSN 5930012377322. Normally closed contacts open on temperature rise approximately 220F. This switch provides the input signal to...www.eriksmilitarysurplus.com
Where are you ordering that from? I've heard of the "blue tag" but didn't know who sells it.Many to chose from. My personal choice. Skimp on quality, pick up some headache pills too, CAMO
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Boy they flubbed that one "SUPPORT STARTED MOTOR"Installed improved starter support bracket and finished repainting oil pan before re-installation.
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