Superdog Posted January 8, 2016 Share Posted January 8, 2016 Can anyone tell me a # for the right PTO for a 12 speed? Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/ Share on other sites More sharing options...
j hancock Posted January 9, 2016 Share Posted January 9, 2016 More info than you would ever want.http://www.phtruck.com/download/chelsea/applicationcatalogs/hy25-3000_us_mack.pdf 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-319110 Share on other sites More sharing options...
Baxter Posted January 9, 2016 Share Posted January 9, 2016 Bottom plate . Side plate. What application? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-319114 Share on other sites More sharing options...
Superdog Posted January 9, 2016 Author Share Posted January 9, 2016 More info than you would ever want.http://www.phtruck.com/download/chelsea/applicationcatalogs/hy25-3000_us_mack.pdfThanks,he should be able to find what he needs there. Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-319116 Share on other sites More sharing options...
Superdog Posted January 9, 2016 Author Share Posted January 9, 2016 Bottom plate . Side plate. What application?I'd guess side plate,he just needs to run the pump for his 2 line wet kit. Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-319119 Share on other sites More sharing options...
fullfuel01 Posted January 9, 2016 Share Posted January 9, 2016 Best way Mike is thr mack rear mounted pto. It connect on a countershaft on the back of the transmission Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-319151 Share on other sites More sharing options...
thomastractorsvc Posted September 24, 2017 Share Posted September 24, 2017 On 1/8/2016 at 8:56 PM, Superdog said: I'd guess side plate,he just needs to run the pump for his 2 line wet kit. What did you get? I am going to need one for my 98 R with 12 speed. On 1/9/2016 at 7:15 AM, fullfuel01 said: Best way Mike is thr mack rear mounted pto. It connect on a countershaft on the back of the transmission Where do you find that style? Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-380554 Share on other sites More sharing options...
m16ty Posted September 25, 2017 Share Posted September 25, 2017 On 1/9/2016 at 7:15 AM, fullfuel01 said: Best way Mike is thr mack rear mounted pto. It connect on a countershaft on the back of the transmission Isn't that the PTO used to run a winch and whatnot and use max engine HP though it? Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-380581 Share on other sites More sharing options...
Superdog Posted September 26, 2017 Author Share Posted September 26, 2017 On 9/24/2017 at 6:05 PM, thomastractorsvc said: What did you get? I am going to need one for my 98 R with 12 speed. Where do you find that style? Friend of mine has one for sale. Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-380717 Share on other sites More sharing options...
880joe Posted September 27, 2017 Share Posted September 27, 2017 will a rear mounted pto off a 12speed fit a 2 stick 6 speed Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-380781 Share on other sites More sharing options...
steve p Posted September 27, 2017 Share Posted September 27, 2017 not all 10 /12 speeds came out with the internal spline in the counter shaft to take the rear mounted pto Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-380827 Share on other sites More sharing options...
thomastractorsvc Posted September 30, 2017 Share Posted September 30, 2017 I crawled around mine it looks like it had a side mount one before and the back of the trans is stamped pto and some other markings by the lower center cap on the rear of the transmission Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-381203 Share on other sites More sharing options...
steve p Posted September 30, 2017 Share Posted September 30, 2017 2 hours ago, thomastractorsvc said: I crawled around mine it looks like it had a side mount one before and the back of the trans is stamped pto and some other markings by the lower center cap on the rear of the transmission pull the countershaft cover and check to make sure you have a internal spline Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-381211 Share on other sites More sharing options...
fjh Posted September 30, 2017 Share Posted September 30, 2017 (edited) ( Usually ) It will have PTO stamped on the back of the case if it has the hollow shaft for the rear PTO! Edited September 30, 2017 by fjh 2 Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-381225 Share on other sites More sharing options...
Flat Work Posted September 30, 2017 Share Posted September 30, 2017 (edited) I used the Newstar pto that was on mine for my wet kit. But it was previously used to run a Tuthill blower for unloading fracking sand tankers. It spins fast at 160% of the engine's rpm. My pump is remote mounted and uses a driveshaft. Do you know the optimal rpm speed for the pump's maximum flow? That will tell Chelsea or Parker, or whomever you deal with what size and speed you need. And it will tell you when you're approaching over speed of the pump. I'm sure you can Google the numbers and get all the specs on the pump. We ended up having to size a Parker pump that fit the pto speed. 21gpm @1600 rpm. I'm lifting a 235 inch stroke 5 stage dump cylinder. It goes up pretty effortlessly with a 20 ton load at 800 engine rpm. Which is about 1300 rpm on the pump. All of this may have absolutely no particular bearing at all on what you're doing. It was just the experience I had because I was matching a pump to existing pto. Edited September 30, 2017 by Flat Work Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-381233 Share on other sites More sharing options...
m16ty Posted October 12, 2017 Share Posted October 12, 2017 Does the rear mount PTO change speed with what gear you are in like the side mount? Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-382228 Share on other sites More sharing options...
Lmackattack Posted October 12, 2017 Share Posted October 12, 2017 3 hours ago, m16ty said: Does the rear mount PTO change speed with what gear you are in like the side mount? no, the rear mount Mack PTO runs off engine speed only. At least that is how it works with the 6 and 12 speed mack transmissions Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-382245 Share on other sites More sharing options...
Lmackattack Posted October 12, 2017 Share Posted October 12, 2017 On 9/26/2017 at 7:27 PM, 880joe said: will a rear mounted pto off a 12speed fit a 2 stick 6 speed It should swap with no issues. Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-382246 Share on other sites More sharing options...
thomastractorsvc Posted October 15, 2017 Share Posted October 15, 2017 Are Mack transmission side mount PTOs interchangeable or do they fit only specific transmissions? Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-382578 Share on other sites More sharing options...
terry Posted October 15, 2017 Share Posted October 15, 2017 On 10/12/2017 at 12:16 AM, Lmackattack said: It should swap with no issues. I believe it has to have a splined counter shaft. terry Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-382582 Share on other sites More sharing options...
Lmackattack Posted October 15, 2017 Share Posted October 15, 2017 3 hours ago, terry said: I believe it has to have a splined counter shaft. terry You are so correct Terry. Please Let me rephrase..... Thou shall remove a Mack Rear mount PTO from a Six (6) speed Mack transmission and thou will re install on a Mack twelve (12) speed Transmission when the Mack twelve (12) speed transmission has the appropriate splined counter shaft already installed. Mack Six (6) and twelve (12) speed transmissions with provisions for a Mack Rear mount PTO most often are marked with a stamp on the rear most counter shaft cover. A stamp may include the letters P T O or simply a X as designation that the transmission is so equipped for a Mack style Rear mount PTO. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-382595 Share on other sites More sharing options...
Steve L Posted October 28, 2021 Share Posted October 28, 2021 Where can I get one of those Mack style rear mount pto’s Quote Link to comment https://www.bigmacktrucks.com/topic/43433-12-speed-pto/#findComment-482006 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.