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shifting process on a Mack 12speed


mackniac
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Hi !

need to have some advise on shifting a Mack 12 speed tranny .

many people are saying .

1- push clutch

2- pull stick on 1st direct

3- release clutch

4- apply fuel pedal

5- push knob on HI

6- release fuel pedal

7-push clutch

8- release clutch

9- apply fuel pedal again

10- push clutch

11- pull out stick from 1st to neutral and push knob back to direct

12-release clutch

13- push clutch

14- push stick in 2nd

15-release clutch

16- apply fuel pedal again

17- repeat process for each gear

then some goes :

1- push clutch

2- pull stick on 1st direct

3- release clutch

4- apply fuel pedal

5- push knob on HI

6- release fuel pedal

7- apply fuel pedal again

8- push clutch

9- pull out stick from 1st to neutral and push knob back to direct

10-release clutch

11- push clutch

12- push stick in 2nd

13-release clutch

14- apply fuel pedal again

15- repeat process for each gear

then some others goes :

1- push clutch

2- pull stick on 1st direct

3- release clutch

4- apply fuel pedal

5- push knob on HI

6- release fuel pedal

7-push clutch

8- pull out stick from 1st to neutral then in first again

9- release clutch

10- apply fuel pedal again

11- push clutch

12- pull out stick from 1st to neutral and push knob back to direct

13-release clutch

14- push clutch

15- push stick in 2nd

16-release clutch

17- apply fuel pedal again

18- repeat process for each gear

Makniac , collector and customizer of die-cast model in 1/50th scale

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thank you to all for the help , it is very appreciated !

If I see you in Macungie I'd love to sy thank you in person !!

I will wear a Red Manitowoc baselball hat ! and a strong french accent !!! lol

Edited by mackniac

Makniac , collector and customizer of die-cast model in 1/50th scale

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thanks for the help guys..

I found the MH owners manual via wiki and it had enough info on the T2180 to answers all my questions.

don't think I'll need all 18 gears to bobtail... but you never know!!

BC Mack

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trannies are some of the easiest to drive. I'm not sure I've driven that particular version, but if it's an 8 speed, you'll have a 4 speed H pattern. What you'll do is put the selector in Low, the run through the gears, 1-4. After reaching 4, put the selector in High and shift back to 1, which now becomes 5. Run through 1-4 again, these now become 5-8. To downshift, reverse the sequence.With this tranny it sounds like you'll have 4 reverse gears too. To back up, select ® on the shifter, then select the appropriate gear. Avoid selecting (N) with the clutch released, you'll have a tough time getting back in gear without shutting the truck down.

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