Manual (Standard) Truck Transmission Overview
Every vehicle in the world changes gear while being driven on the road. While Auto transmission vehicles change gear automatically, in the standard (manual truck) we have to do it ourselves i.e it’s the responsibility of the driver to upshift or downshift depending upon the speed of the vehicle. Higher the speed, we need to upshift and while speed is decreasing we need to downshift.
Manual Truck Transmission Explained
Components of manual truck
- Clutch
- Brake
- Gas (Accelerator)
- Gear Lever i Range Selector
- Splitter
- Gauge : RPM 10 and 15
- Speed : On the odometer
When we press Clutch : Disengages Engine and Transmission
Engine Transmission Tire
If range selector Down If range selector UP
R 1 3 R 5 7
N N
L 2 4 L 6 8
How to Start
Park Brake applied Gear:N Press Clutch
Move : I Cover Foot Brake ii Release park brake iii. Press clutch
iv Then go to 1st or 2nd gear
(Imp) : Clutch and Gas not at the same time
Friction/Meeting Point : Release foot brake
After releasing clutch give Gas : (No Clutch Riding)
No Gear Shifting: Railway Track , Turn/Curve, Steep Downhills like BC hills
Upshifting
When we give gas RPM Goes up when at >=15 shift to higher gear
Then RPM Drops to 10 shift to a higher gear
Downshifting
If we slow down AND RPM drops to <=10 SHIFT TO Lower gear
Explain
- Double Clutch
We press 2 times clutch during the process of gear shifting. First time when we out the gear to neutral and then we in (neutral to the gear
- Single Clutch
- Without Clutch
- Clutch Riding
- FRICTION/Meeting
Upshifting
When we speed up then we need the higher gear means if I was driving 10 km/h and now want to go at 15 km/h I need 1 higher gear and so on
Upshifting Steps
- At 15 RPM Hand on Gearlever
- Release Gas à Press Clutch à Gear to Neutral
- RPMs around 10 RPM à Higher Gear
(If it takes longer to shift gear and RPM <<10 then give gas )
Upshifting 15ß—————————–à10
Out In
Downshifting
When we have to slow down while driving when say red light is ahead or a stop sign is coming or whatever reason, we need to go to lower gear and this process of lowering of gears in motor vehicle is called Downshifting.
Downshifting Steps
The vehicle is slowing down
- RPMs at 10 Hands on Gear lever hold firmly (pull/push)
- Release gas à Press Clutch à Gear to Neutral
- Release clutch àGive gas to >=15 RPM
- Put to lower gear (Clutch Optional)
Imp: 1. Always stop in gear
- Do downshifting if enough space/time otherwise stop in any gear with clutch
If no clutch Engine will stop.
- Once stop in any gear then N and start from 1st or 2nd gear
- No gas(race) when stop only clutch for shifting
Down Shifting : 10 ß—————————-15>
Out Gas in
Manual Transmission (F.A.Qs )
- How should I stop at Intersection
(Clutch, Gear or BRAKE)
Press clutch and brake. AND Gear should be in 2nd gear when starting/when light turns green
- My Gear was grinding: Why
Could be one of the following reasons
- RPMs not matching
- Gear position was not correct
- Can I change gear at Intersection?
Only when going straight i.e we cant change gear while turning
- During Downhill/Uphill parking what gear should I use
Downhill: Reverse
Uphill: Lowest gear (1st or 2nd)
5 What was the reason my truck stopped (because I could not change gear)
on the road and now what is the solution
- Explain matching of 10 and 15 RPMs
What gear we drive (means in which gear we are in at a particular time) is proportional to speed i.e at high speed we should in higher gears and when speed is slow we should be in lower gears
- Upshifting
When We are trying to up the speed and
RPMSs >=15 à System asks for one higher gear
Foot off gas pedal and Press clutch and put gear in neutral
RPMs <=10 Put gear in one higher gear
- Downshifting
When we are trying to lower the gear (slowing down the vehicle) and
RPMs <=10 à System asks for one lower gear
Foot off gas pedal and press clutch and put gear in neutral and release clutch and give gas
RPMs >=15 Put gear in one lower gear
Imp: NO CLUTCH AND GAS AT THE SAME TIME
- What damages the system (Engine) Most
- What is a range selector/splitter? When to use it
- What’s the meaning of 13 speed /18 speed transmission
- What’s synchronized and unsynchronized transmission
- How to use half gear
NICE INFORMATION PERRY