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Message
OT mechanics: Mack truck hi:low range selector
Posted on 3/25/19 at 3:21 pm
Posted on 3/25/19 at 3:21 pm
I have a Mack truck we use around the farm and I can’t get it to shift from low to high range while driving anymore.
Any clue what this might be?
Any clue what this might be?
Posted on 3/25/19 at 3:24 pm to deltaland
i can absolutely make groceries in this.
Posted on 3/25/19 at 3:25 pm to deltaland
Could be a transmission issue.
Posted on 3/25/19 at 3:27 pm to OysterPoBoy
Well hell it just started back working again wtf
Posted on 3/25/19 at 3:30 pm to deltaland
Little squirt like you probably isn’t tall enough to mash the clutch pedal
Posted on 3/25/19 at 3:31 pm to deltaland
We have a winner for baw POTD.
Posted on 3/25/19 at 3:32 pm to deltaland
You need a two stick Mack with a window in the back
Posted on 3/25/19 at 3:51 pm to el Gaucho
quote:
Little squirt like you probably isn’t tall enough to mash the clutch pedal
I’m 6’6 and you don’t use the clutch when shifting gears on a big rig except when starting off
Posted on 3/25/19 at 4:01 pm to deltaland
quote:
except when starting off
pffshh, I haven't depressed a clutch in 40 years.
Over The Road for lyfe!!!
Posted on 3/25/19 at 4:01 pm to deltaland
R model?
Probably the aux transmission linkage sticking together. Get under there and pry it apart.
Probably the aux transmission linkage sticking together. Get under there and pry it apart.
This post was edited on 3/25/19 at 4:04 pm
Posted on 3/25/19 at 4:06 pm to deltaland
That’s a tall bag of trash
Posted on 3/25/19 at 6:01 pm to deltaland
quote:
R model? Yup
In that case there's absolutely nothing wrong with the truck, she'll last forever. Driver error.
Posted on 3/25/19 at 6:09 pm to Jefferson Darcy
Check the air line between shifter and tranny.
Posted on 3/25/19 at 6:15 pm to bovine1
EVERYONE knows that R models are manual aux shifters... no air shift bruh.
Posted on 3/25/19 at 7:28 pm to Jefferson Darcy
Actually it’s a RD model. But I dunno why it refused to switch like I said after about 30 minutes of idling it started working again but it had plenty air pressure built up when it wasnt working
Posted on 3/25/19 at 9:11 pm to deltaland
R models with 5 and 6 speed Maxitorques don't have high and low range. I drive a 68 R600 at work and my dad has a 87 R700 both 5 speeds. I'm not coordinated enuf to drive a 2 stick 6 speed. I assume if it has high and low range it's got a Roadranger type rangefinder which does shift by air.
Posted on 3/25/19 at 9:22 pm to deltaland
Open petcock on air tank and see if any white oil sludge is in there. Over the years oil will get carried up the lines and can make selector switch stick.
Posted on 3/26/19 at 7:09 am to deltaland
(no message)
This post was edited on 4/10/19 at 6:36 am
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